[337] | 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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| 9 | *
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| 10 | * This software is licensed as described in the file COPYING, which
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| 11 | * you should have received as part of this distribution. The terms
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| 12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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| 13 | *
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| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 15 | * copies of the Software, and permit persons to whom the Software is
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| 16 | * furnished to do so, under the terms of the COPYING file.
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| 17 | *
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| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 19 | * KIND, either express or implied.
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| 20 | *
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| 21 | ***************************************************************************/
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| 22 |
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| 23 | #include "curl_setup.h"
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| 24 |
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| 25 | #ifdef USE_NGHTTP2
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| 26 | #include <nghttp2/nghttp2.h>
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| 27 | #include "urldata.h"
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| 28 | #include "http2.h"
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| 29 | #include "http.h"
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| 30 | #include "sendf.h"
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| 31 | #include "select.h"
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| 32 | #include "curl_base64.h"
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| 33 | #include "strcase.h"
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| 34 | #include "multiif.h"
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| 35 | #include "url.h"
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| 36 | #include "connect.h"
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| 37 | #include "strtoofft.h"
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| 38 | #include "strdup.h"
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| 39 | /* The last 3 #include files should be in this order */
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| 40 | #include "curl_printf.h"
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| 41 | #include "curl_memory.h"
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| 42 | #include "memdebug.h"
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| 43 |
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| 44 | #define MIN(x,y) ((x)<(y)?(x):(y))
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| 45 |
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| 46 | #if (NGHTTP2_VERSION_NUM < 0x010000)
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| 47 | #error too old nghttp2 version, upgrade!
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| 48 | #endif
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| 49 |
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| 50 | #if (NGHTTP2_VERSION_NUM > 0x010800)
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| 51 | #define NGHTTP2_HAS_HTTP2_STRERROR 1
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| 52 | #endif
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| 53 |
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| 54 | #if (NGHTTP2_VERSION_NUM >= 0x010900)
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| 55 | /* nghttp2_session_callbacks_set_error_callback is present in nghttp2 1.9.0 or
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| 56 | later */
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| 57 | #define NGHTTP2_HAS_ERROR_CALLBACK 1
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| 58 | #else
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| 59 | #define nghttp2_session_callbacks_set_error_callback(x,y)
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| 60 | #endif
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| 61 |
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| 62 | #if (NGHTTP2_VERSION_NUM >= 0x010c00)
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| 63 | #define NGHTTP2_HAS_SET_LOCAL_WINDOW_SIZE 1
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| 64 | #endif
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| 65 |
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| 66 | #define HTTP2_HUGE_WINDOW_SIZE (1 << 30)
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| 67 |
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| 68 | /*
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| 69 | * Curl_http2_init_state() is called when the easy handle is created and
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| 70 | * allows for HTTP/2 specific init of state.
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| 71 | */
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| 72 | void Curl_http2_init_state(struct UrlState *state)
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| 73 | {
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| 74 | state->stream_weight = NGHTTP2_DEFAULT_WEIGHT;
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| 75 | }
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| 76 |
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| 77 | /*
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| 78 | * Curl_http2_init_userset() is called when the easy handle is created and
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| 79 | * allows for HTTP/2 specific user-set fields.
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| 80 | */
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| 81 | void Curl_http2_init_userset(struct UserDefined *set)
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| 82 | {
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| 83 | set->stream_weight = NGHTTP2_DEFAULT_WEIGHT;
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| 84 | }
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| 85 |
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| 86 | static int http2_perform_getsock(const struct connectdata *conn,
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| 87 | curl_socket_t *sock, /* points to
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| 88 | numsocks
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| 89 | number of
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| 90 | sockets */
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| 91 | int numsocks)
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| 92 | {
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| 93 | const struct http_conn *c = &conn->proto.httpc;
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| 94 | int bitmap = GETSOCK_BLANK;
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| 95 | (void)numsocks;
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| 96 |
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| 97 | /* TODO We should check underlying socket state if it is SSL socket
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| 98 | because of renegotiation. */
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| 99 | sock[0] = conn->sock[FIRSTSOCKET];
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| 100 |
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| 101 | /* in a HTTP/2 connection we can basically always get a frame so we should
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| 102 | always be ready for one */
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| 103 | bitmap |= GETSOCK_READSOCK(FIRSTSOCKET);
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| 104 |
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| 105 | if(nghttp2_session_want_write(c->h2))
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| 106 | bitmap |= GETSOCK_WRITESOCK(FIRSTSOCKET);
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| 107 |
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| 108 | return bitmap;
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| 109 | }
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| 110 |
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| 111 | static int http2_getsock(struct connectdata *conn,
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| 112 | curl_socket_t *sock, /* points to numsocks
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| 113 | number of sockets */
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| 114 | int numsocks)
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| 115 | {
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| 116 | return http2_perform_getsock(conn, sock, numsocks);
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| 117 | }
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| 118 |
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| 119 | /*
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| 120 | * http2_stream_free() free HTTP2 stream related data
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| 121 | */
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| 122 | static void http2_stream_free(struct HTTP *http)
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| 123 | {
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| 124 | if(http) {
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| 125 | Curl_add_buffer_free(http->header_recvbuf);
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| 126 | http->header_recvbuf = NULL; /* clear the pointer */
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| 127 | Curl_add_buffer_free(http->trailer_recvbuf);
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| 128 | http->trailer_recvbuf = NULL; /* clear the pointer */
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| 129 | for(; http->push_headers_used > 0; --http->push_headers_used) {
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| 130 | free(http->push_headers[http->push_headers_used - 1]);
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| 131 | }
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| 132 | free(http->push_headers);
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| 133 | http->push_headers = NULL;
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| 134 | }
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| 135 | }
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| 136 |
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| 137 | static CURLcode http2_disconnect(struct connectdata *conn,
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| 138 | bool dead_connection)
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| 139 | {
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| 140 | struct http_conn *c = &conn->proto.httpc;
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| 141 | (void)dead_connection;
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| 142 |
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| 143 | DEBUGF(infof(conn->data, "HTTP/2 DISCONNECT starts now\n"));
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| 144 |
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| 145 | nghttp2_session_del(c->h2);
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| 146 | Curl_safefree(c->inbuf);
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| 147 | http2_stream_free(conn->data->req.protop);
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| 148 |
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| 149 | DEBUGF(infof(conn->data, "HTTP/2 DISCONNECT done\n"));
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| 150 |
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| 151 | return CURLE_OK;
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| 152 | }
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| 153 |
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| 154 | /*
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| 155 | * The server may send us data at any point (e.g. PING frames). Therefore,
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| 156 | * we cannot assume that an HTTP/2 socket is dead just because it is readable.
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| 157 | *
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| 158 | * Instead, if it is readable, run Curl_connalive() to peek at the socket
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| 159 | * and distinguish between closed and data.
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| 160 | */
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| 161 | static bool http2_connisdead(struct connectdata *check)
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| 162 | {
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| 163 | int sval;
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| 164 | bool ret_val = TRUE;
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| 165 |
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| 166 | sval = SOCKET_READABLE(check->sock[FIRSTSOCKET], 0);
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| 167 | if(sval == 0) {
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| 168 | /* timeout */
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| 169 | ret_val = FALSE;
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| 170 | }
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| 171 | else if(sval & CURL_CSELECT_ERR) {
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| 172 | /* socket is in an error state */
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| 173 | ret_val = TRUE;
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| 174 | }
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| 175 | else if(sval & CURL_CSELECT_IN) {
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| 176 | /* readable with no error. could still be closed */
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| 177 | ret_val = !Curl_connalive(check);
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| 178 | }
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| 179 |
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| 180 | return ret_val;
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| 181 | }
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| 182 |
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| 183 |
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| 184 | static unsigned int http2_conncheck(struct connectdata *check,
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| 185 | unsigned int checks_to_perform)
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| 186 | {
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| 187 | unsigned int ret_val = CONNRESULT_NONE;
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| 188 |
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| 189 | if(checks_to_perform & CONNCHECK_ISDEAD) {
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| 190 | if(http2_connisdead(check))
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| 191 | ret_val |= CONNRESULT_DEAD;
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| 192 | }
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| 193 |
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| 194 | return ret_val;
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| 195 | }
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| 196 |
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| 197 | /* called from Curl_http_setup_conn */
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| 198 | void Curl_http2_setup_req(struct Curl_easy *data)
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| 199 | {
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| 200 | struct HTTP *http = data->req.protop;
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| 201 |
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| 202 | http->nread_header_recvbuf = 0;
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| 203 | http->bodystarted = FALSE;
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| 204 | http->status_code = -1;
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| 205 | http->pausedata = NULL;
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| 206 | http->pauselen = 0;
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| 207 | http->error_code = NGHTTP2_NO_ERROR;
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| 208 | http->closed = FALSE;
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| 209 | http->close_handled = FALSE;
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| 210 | http->mem = data->state.buffer;
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| 211 | http->len = data->set.buffer_size;
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| 212 | http->memlen = 0;
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| 213 | }
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| 214 |
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| 215 | /* called from Curl_http_setup_conn */
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| 216 | void Curl_http2_setup_conn(struct connectdata *conn)
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| 217 | {
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| 218 | conn->proto.httpc.settings.max_concurrent_streams =
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| 219 | DEFAULT_MAX_CONCURRENT_STREAMS;
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| 220 | }
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| 221 |
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| 222 | /*
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| 223 | * HTTP2 handler interface. This isn't added to the general list of protocols
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| 224 | * but will be used at run-time when the protocol is dynamically switched from
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| 225 | * HTTP to HTTP2.
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| 226 | */
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| 227 | static const struct Curl_handler Curl_handler_http2 = {
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| 228 | "HTTP", /* scheme */
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| 229 | ZERO_NULL, /* setup_connection */
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| 230 | Curl_http, /* do_it */
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| 231 | Curl_http_done, /* done */
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| 232 | ZERO_NULL, /* do_more */
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| 233 | ZERO_NULL, /* connect_it */
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| 234 | ZERO_NULL, /* connecting */
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| 235 | ZERO_NULL, /* doing */
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| 236 | http2_getsock, /* proto_getsock */
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| 237 | http2_getsock, /* doing_getsock */
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| 238 | ZERO_NULL, /* domore_getsock */
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| 239 | http2_perform_getsock, /* perform_getsock */
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| 240 | http2_disconnect, /* disconnect */
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| 241 | ZERO_NULL, /* readwrite */
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| 242 | http2_conncheck, /* connection_check */
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| 243 | PORT_HTTP, /* defport */
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| 244 | CURLPROTO_HTTP, /* protocol */
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| 245 | PROTOPT_STREAM /* flags */
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| 246 | };
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| 247 |
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| 248 | static const struct Curl_handler Curl_handler_http2_ssl = {
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| 249 | "HTTPS", /* scheme */
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| 250 | ZERO_NULL, /* setup_connection */
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| 251 | Curl_http, /* do_it */
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| 252 | Curl_http_done, /* done */
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| 253 | ZERO_NULL, /* do_more */
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| 254 | ZERO_NULL, /* connect_it */
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| 255 | ZERO_NULL, /* connecting */
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| 256 | ZERO_NULL, /* doing */
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| 257 | http2_getsock, /* proto_getsock */
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| 258 | http2_getsock, /* doing_getsock */
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| 259 | ZERO_NULL, /* domore_getsock */
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| 260 | http2_perform_getsock, /* perform_getsock */
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| 261 | http2_disconnect, /* disconnect */
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| 262 | ZERO_NULL, /* readwrite */
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| 263 | http2_conncheck, /* connection_check */
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| 264 | PORT_HTTP, /* defport */
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| 265 | CURLPROTO_HTTPS, /* protocol */
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| 266 | PROTOPT_SSL | PROTOPT_STREAM /* flags */
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| 267 | };
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| 268 |
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| 269 | /*
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| 270 | * Store nghttp2 version info in this buffer, Prefix with a space. Return
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| 271 | * total length written.
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| 272 | */
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| 273 | int Curl_http2_ver(char *p, size_t len)
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| 274 | {
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| 275 | nghttp2_info *h2 = nghttp2_version(0);
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| 276 | return snprintf(p, len, " nghttp2/%s", h2->version_str);
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| 277 | }
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| 278 |
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| 279 | /* HTTP/2 error code to name based on the Error Code Registry.
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| 280 | https://tools.ietf.org/html/rfc7540#page-77
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| 281 | nghttp2_error_code enums are identical.
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| 282 | */
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| 283 | const char *Curl_http2_strerror(uint32_t err)
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| 284 | {
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| 285 | #ifndef NGHTTP2_HAS_HTTP2_STRERROR
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| 286 | const char *str[] = {
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| 287 | "NO_ERROR", /* 0x0 */
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| 288 | "PROTOCOL_ERROR", /* 0x1 */
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| 289 | "INTERNAL_ERROR", /* 0x2 */
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| 290 | "FLOW_CONTROL_ERROR", /* 0x3 */
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| 291 | "SETTINGS_TIMEOUT", /* 0x4 */
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| 292 | "STREAM_CLOSED", /* 0x5 */
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| 293 | "FRAME_SIZE_ERROR", /* 0x6 */
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| 294 | "REFUSED_STREAM", /* 0x7 */
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| 295 | "CANCEL", /* 0x8 */
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| 296 | "COMPRESSION_ERROR", /* 0x9 */
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| 297 | "CONNECT_ERROR", /* 0xA */
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| 298 | "ENHANCE_YOUR_CALM", /* 0xB */
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| 299 | "INADEQUATE_SECURITY", /* 0xC */
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| 300 | "HTTP_1_1_REQUIRED" /* 0xD */
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| 301 | };
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| 302 | return (err < sizeof str / sizeof str[0]) ? str[err] : "unknown";
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| 303 | #else
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| 304 | return nghttp2_http2_strerror(err);
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| 305 | #endif
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| 306 | }
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| 307 |
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| 308 | /*
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| 309 | * The implementation of nghttp2_send_callback type. Here we write |data| with
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| 310 | * size |length| to the network and return the number of bytes actually
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| 311 | * written. See the documentation of nghttp2_send_callback for the details.
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| 312 | */
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| 313 | static ssize_t send_callback(nghttp2_session *h2,
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| 314 | const uint8_t *data, size_t length, int flags,
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| 315 | void *userp)
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| 316 | {
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| 317 | struct connectdata *conn = (struct connectdata *)userp;
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| 318 | struct http_conn *c = &conn->proto.httpc;
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| 319 | ssize_t written;
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| 320 | CURLcode result = CURLE_OK;
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| 321 |
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| 322 | (void)h2;
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| 323 | (void)flags;
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| 324 |
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| 325 | written = ((Curl_send*)c->send_underlying)(conn, FIRSTSOCKET,
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| 326 | data, length, &result);
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| 327 |
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| 328 | if(result == CURLE_AGAIN) {
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| 329 | return NGHTTP2_ERR_WOULDBLOCK;
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| 330 | }
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| 331 |
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| 332 | if(written == -1) {
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| 333 | failf(conn->data, "Failed sending HTTP2 data");
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| 334 | return NGHTTP2_ERR_CALLBACK_FAILURE;
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| 335 | }
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| 336 |
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| 337 | if(!written)
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| 338 | return NGHTTP2_ERR_WOULDBLOCK;
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| 339 |
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| 340 | return written;
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| 341 | }
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| 342 |
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| 343 |
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| 344 | /* We pass a pointer to this struct in the push callback, but the contents of
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| 345 | the struct are hidden from the user. */
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| 346 | struct curl_pushheaders {
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| 347 | struct Curl_easy *data;
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| 348 | const nghttp2_push_promise *frame;
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| 349 | };
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| 350 |
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| 351 | /*
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| 352 | * push header access function. Only to be used from within the push callback
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| 353 | */
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| 354 | char *curl_pushheader_bynum(struct curl_pushheaders *h, size_t num)
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| 355 | {
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| 356 | /* Verify that we got a good easy handle in the push header struct, mostly to
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| 357 | detect rubbish input fast(er). */
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| 358 | if(!h || !GOOD_EASY_HANDLE(h->data))
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| 359 | return NULL;
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| 360 | else {
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| 361 | struct HTTP *stream = h->data->req.protop;
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| 362 | if(num < stream->push_headers_used)
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| 363 | return stream->push_headers[num];
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| 364 | }
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| 365 | return NULL;
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| 366 | }
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| 367 |
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| 368 | /*
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| 369 | * push header access function. Only to be used from within the push callback
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| 370 | */
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| 371 | char *curl_pushheader_byname(struct curl_pushheaders *h, const char *header)
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| 372 | {
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| 373 | /* Verify that we got a good easy handle in the push header struct,
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| 374 | mostly to detect rubbish input fast(er). Also empty header name
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| 375 | is just a rubbish too. We have to allow ":" at the beginning of
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| 376 | the header, but header == ":" must be rejected. If we have ':' in
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| 377 | the middle of header, it could be matched in middle of the value,
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| 378 | this is because we do prefix match.*/
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| 379 | if(!h || !GOOD_EASY_HANDLE(h->data) || !header || !header[0] ||
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| 380 | !strcmp(header, ":") || strchr(header + 1, ':'))
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| 381 | return NULL;
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| 382 | else {
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| 383 | struct HTTP *stream = h->data->req.protop;
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| 384 | size_t len = strlen(header);
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| 385 | size_t i;
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| 386 | for(i = 0; i<stream->push_headers_used; i++) {
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| 387 | if(!strncmp(header, stream->push_headers[i], len)) {
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| 388 | /* sub-match, make sure that it is followed by a colon */
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| 389 | if(stream->push_headers[i][len] != ':')
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| 390 | continue;
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| 391 | return &stream->push_headers[i][len + 1];
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| 392 | }
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| 393 | }
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| 394 | }
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| 395 | return NULL;
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| 396 | }
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| 397 |
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| 398 | static struct Curl_easy *duphandle(struct Curl_easy *data)
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| 399 | {
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| 400 | struct Curl_easy *second = curl_easy_duphandle(data);
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| 401 | if(second) {
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| 402 | /* setup the request struct */
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| 403 | struct HTTP *http = calloc(1, sizeof(struct HTTP));
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| 404 | if(!http) {
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| 405 | (void)Curl_close(second);
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| 406 | second = NULL;
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| 407 | }
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| 408 | else {
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| 409 | second->req.protop = http;
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| 410 | http->header_recvbuf = Curl_add_buffer_init();
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| 411 | if(!http->header_recvbuf) {
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| 412 | free(http);
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| 413 | (void)Curl_close(second);
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| 414 | second = NULL;
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| 415 | }
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| 416 | else {
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| 417 | Curl_http2_setup_req(second);
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| 418 | second->state.stream_weight = data->state.stream_weight;
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| 419 | }
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| 420 | }
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| 421 | }
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| 422 | return second;
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| 423 | }
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| 424 |
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| 425 |
|
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| 426 | static int push_promise(struct Curl_easy *data,
|
---|
| 427 | struct connectdata *conn,
|
---|
| 428 | const nghttp2_push_promise *frame)
|
---|
| 429 | {
|
---|
| 430 | int rv;
|
---|
| 431 | DEBUGF(infof(data, "PUSH_PROMISE received, stream %u!\n",
|
---|
| 432 | frame->promised_stream_id));
|
---|
| 433 | if(data->multi->push_cb) {
|
---|
| 434 | struct HTTP *stream;
|
---|
| 435 | struct HTTP *newstream;
|
---|
| 436 | struct curl_pushheaders heads;
|
---|
| 437 | CURLMcode rc;
|
---|
| 438 | struct http_conn *httpc;
|
---|
| 439 | size_t i;
|
---|
| 440 | /* clone the parent */
|
---|
| 441 | struct Curl_easy *newhandle = duphandle(data);
|
---|
| 442 | if(!newhandle) {
|
---|
| 443 | infof(data, "failed to duplicate handle\n");
|
---|
| 444 | rv = 1; /* FAIL HARD */
|
---|
| 445 | goto fail;
|
---|
| 446 | }
|
---|
| 447 |
|
---|
| 448 | heads.data = data;
|
---|
| 449 | heads.frame = frame;
|
---|
| 450 | /* ask the application */
|
---|
| 451 | DEBUGF(infof(data, "Got PUSH_PROMISE, ask application!\n"));
|
---|
| 452 |
|
---|
| 453 | stream = data->req.protop;
|
---|
| 454 | if(!stream) {
|
---|
| 455 | failf(data, "Internal NULL stream!\n");
|
---|
| 456 | (void)Curl_close(newhandle);
|
---|
| 457 | rv = 1;
|
---|
| 458 | goto fail;
|
---|
| 459 | }
|
---|
| 460 |
|
---|
| 461 | rv = data->multi->push_cb(data, newhandle,
|
---|
| 462 | stream->push_headers_used, &heads,
|
---|
| 463 | data->multi->push_userp);
|
---|
| 464 |
|
---|
| 465 | /* free the headers again */
|
---|
| 466 | for(i = 0; i<stream->push_headers_used; i++)
|
---|
| 467 | free(stream->push_headers[i]);
|
---|
| 468 | free(stream->push_headers);
|
---|
| 469 | stream->push_headers = NULL;
|
---|
| 470 | stream->push_headers_used = 0;
|
---|
| 471 |
|
---|
| 472 | if(rv) {
|
---|
| 473 | /* denied, kill off the new handle again */
|
---|
| 474 | http2_stream_free(newhandle->req.protop);
|
---|
| 475 | (void)Curl_close(newhandle);
|
---|
| 476 | goto fail;
|
---|
| 477 | }
|
---|
| 478 |
|
---|
| 479 | newstream = newhandle->req.protop;
|
---|
| 480 | newstream->stream_id = frame->promised_stream_id;
|
---|
| 481 | newhandle->req.maxdownload = -1;
|
---|
| 482 | newhandle->req.size = -1;
|
---|
| 483 |
|
---|
| 484 | /* approved, add to the multi handle and immediately switch to PERFORM
|
---|
| 485 | state with the given connection !*/
|
---|
| 486 | rc = Curl_multi_add_perform(data->multi, newhandle, conn);
|
---|
| 487 | if(rc) {
|
---|
| 488 | infof(data, "failed to add handle to multi\n");
|
---|
| 489 | http2_stream_free(newhandle->req.protop);
|
---|
| 490 | Curl_close(newhandle);
|
---|
| 491 | rv = 1;
|
---|
| 492 | goto fail;
|
---|
| 493 | }
|
---|
| 494 |
|
---|
| 495 | httpc = &conn->proto.httpc;
|
---|
| 496 | nghttp2_session_set_stream_user_data(httpc->h2,
|
---|
| 497 | frame->promised_stream_id, newhandle);
|
---|
| 498 | }
|
---|
| 499 | else {
|
---|
| 500 | DEBUGF(infof(data, "Got PUSH_PROMISE, ignore it!\n"));
|
---|
| 501 | rv = 1;
|
---|
| 502 | }
|
---|
| 503 | fail:
|
---|
| 504 | return rv;
|
---|
| 505 | }
|
---|
| 506 |
|
---|
| 507 | static int on_frame_recv(nghttp2_session *session, const nghttp2_frame *frame,
|
---|
| 508 | void *userp)
|
---|
| 509 | {
|
---|
| 510 | struct connectdata *conn = (struct connectdata *)userp;
|
---|
| 511 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
| 512 | struct Curl_easy *data_s = NULL;
|
---|
| 513 | struct HTTP *stream = NULL;
|
---|
| 514 | static int lastStream = -1;
|
---|
| 515 | int rv;
|
---|
| 516 | size_t left, ncopy;
|
---|
| 517 | int32_t stream_id = frame->hd.stream_id;
|
---|
| 518 |
|
---|
| 519 | if(!stream_id) {
|
---|
| 520 | /* stream ID zero is for connection-oriented stuff */
|
---|
| 521 | if(frame->hd.type == NGHTTP2_SETTINGS) {
|
---|
| 522 | uint32_t max_conn = httpc->settings.max_concurrent_streams;
|
---|
| 523 | DEBUGF(infof(conn->data, "Got SETTINGS\n"));
|
---|
| 524 | httpc->settings.max_concurrent_streams =
|
---|
| 525 | nghttp2_session_get_remote_settings(
|
---|
| 526 | session, NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS);
|
---|
| 527 | httpc->settings.enable_push =
|
---|
| 528 | nghttp2_session_get_remote_settings(
|
---|
| 529 | session, NGHTTP2_SETTINGS_ENABLE_PUSH);
|
---|
| 530 | DEBUGF(infof(conn->data, "MAX_CONCURRENT_STREAMS == %d\n",
|
---|
| 531 | httpc->settings.max_concurrent_streams));
|
---|
| 532 | DEBUGF(infof(conn->data, "ENABLE_PUSH == %s\n",
|
---|
| 533 | httpc->settings.enable_push?"TRUE":"false"));
|
---|
| 534 | if(max_conn != httpc->settings.max_concurrent_streams) {
|
---|
| 535 | /* only signal change if the value actually changed */
|
---|
| 536 | infof(conn->data,
|
---|
| 537 | "Connection state changed (MAX_CONCURRENT_STREAMS updated)!\n");
|
---|
| 538 | Curl_multi_connchanged(conn->data->multi);
|
---|
| 539 | }
|
---|
| 540 | }
|
---|
| 541 | return 0;
|
---|
| 542 | }
|
---|
| 543 | data_s = nghttp2_session_get_stream_user_data(session, stream_id);
|
---|
| 544 | if(lastStream != stream_id) {
|
---|
| 545 | lastStream = stream_id;
|
---|
| 546 | }
|
---|
| 547 | if(!data_s) {
|
---|
| 548 | DEBUGF(infof(conn->data,
|
---|
| 549 | "No Curl_easy associated with stream: %x\n",
|
---|
| 550 | stream_id));
|
---|
| 551 | return 0;
|
---|
| 552 | }
|
---|
| 553 |
|
---|
| 554 | stream = data_s->req.protop;
|
---|
| 555 | if(!stream) {
|
---|
| 556 | DEBUGF(infof(conn->data, "No proto pointer for stream: %x\n",
|
---|
| 557 | stream_id));
|
---|
| 558 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
| 559 | }
|
---|
| 560 |
|
---|
| 561 | DEBUGF(infof(data_s, "on_frame_recv() header %x stream %x\n",
|
---|
| 562 | frame->hd.type, stream_id));
|
---|
| 563 |
|
---|
| 564 | switch(frame->hd.type) {
|
---|
| 565 | case NGHTTP2_DATA:
|
---|
| 566 | /* If body started on this stream, then receiving DATA is illegal. */
|
---|
| 567 | if(!stream->bodystarted) {
|
---|
| 568 | rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
|
---|
| 569 | stream_id, NGHTTP2_PROTOCOL_ERROR);
|
---|
| 570 |
|
---|
| 571 | if(nghttp2_is_fatal(rv)) {
|
---|
| 572 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
| 573 | }
|
---|
| 574 | }
|
---|
| 575 | break;
|
---|
| 576 | case NGHTTP2_HEADERS:
|
---|
| 577 | if(stream->bodystarted) {
|
---|
| 578 | /* Only valid HEADERS after body started is trailer HEADERS. We
|
---|
| 579 | buffer them in on_header callback. */
|
---|
| 580 | break;
|
---|
| 581 | }
|
---|
| 582 |
|
---|
| 583 | /* nghttp2 guarantees that :status is received, and we store it to
|
---|
| 584 | stream->status_code */
|
---|
| 585 | DEBUGASSERT(stream->status_code != -1);
|
---|
| 586 |
|
---|
| 587 | /* Only final status code signals the end of header */
|
---|
| 588 | if(stream->status_code / 100 != 1) {
|
---|
| 589 | stream->bodystarted = TRUE;
|
---|
| 590 | stream->status_code = -1;
|
---|
| 591 | }
|
---|
| 592 |
|
---|
| 593 | Curl_add_buffer(stream->header_recvbuf, "\r\n", 2);
|
---|
| 594 |
|
---|
| 595 | left = stream->header_recvbuf->size_used - stream->nread_header_recvbuf;
|
---|
| 596 | ncopy = MIN(stream->len, left);
|
---|
| 597 |
|
---|
| 598 | memcpy(&stream->mem[stream->memlen],
|
---|
| 599 | stream->header_recvbuf->buffer + stream->nread_header_recvbuf,
|
---|
| 600 | ncopy);
|
---|
| 601 | stream->nread_header_recvbuf += ncopy;
|
---|
| 602 |
|
---|
| 603 | DEBUGF(infof(data_s, "Store %zu bytes headers from stream %u at %p\n",
|
---|
| 604 | ncopy, stream_id, stream->mem));
|
---|
| 605 |
|
---|
| 606 | stream->len -= ncopy;
|
---|
| 607 | stream->memlen += ncopy;
|
---|
| 608 |
|
---|
| 609 | data_s->state.drain++;
|
---|
| 610 | httpc->drain_total++;
|
---|
| 611 | {
|
---|
| 612 | /* get the pointer from userp again since it was re-assigned above */
|
---|
| 613 | struct connectdata *conn_s = (struct connectdata *)userp;
|
---|
| 614 |
|
---|
| 615 | /* if we receive data for another handle, wake that up */
|
---|
| 616 | if(conn_s->data != data_s)
|
---|
| 617 | Curl_expire(data_s, 0, EXPIRE_RUN_NOW);
|
---|
| 618 | }
|
---|
| 619 | break;
|
---|
| 620 | case NGHTTP2_PUSH_PROMISE:
|
---|
| 621 | rv = push_promise(data_s, conn, &frame->push_promise);
|
---|
| 622 | if(rv) { /* deny! */
|
---|
| 623 | rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
|
---|
| 624 | frame->push_promise.promised_stream_id,
|
---|
| 625 | NGHTTP2_CANCEL);
|
---|
| 626 | if(nghttp2_is_fatal(rv)) {
|
---|
| 627 | return rv;
|
---|
| 628 | }
|
---|
| 629 | }
|
---|
| 630 | break;
|
---|
| 631 | default:
|
---|
| 632 | DEBUGF(infof(conn->data, "Got frame type %x for stream %u!\n",
|
---|
| 633 | frame->hd.type, stream_id));
|
---|
| 634 | break;
|
---|
| 635 | }
|
---|
| 636 | return 0;
|
---|
| 637 | }
|
---|
| 638 |
|
---|
| 639 | static int on_invalid_frame_recv(nghttp2_session *session,
|
---|
| 640 | const nghttp2_frame *frame,
|
---|
| 641 | int lib_error_code, void *userp)
|
---|
| 642 | {
|
---|
| 643 | struct Curl_easy *data_s = NULL;
|
---|
| 644 | (void)userp;
|
---|
| 645 | #if !defined(DEBUGBUILD) || defined(CURL_DISABLE_VERBOSE_STRINGS)
|
---|
| 646 | (void)lib_error_code;
|
---|
| 647 | #endif
|
---|
| 648 |
|
---|
| 649 | data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
|
---|
| 650 | if(data_s) {
|
---|
| 651 | DEBUGF(infof(data_s,
|
---|
| 652 | "on_invalid_frame_recv() was called, error=%d:%s\n",
|
---|
| 653 | lib_error_code, nghttp2_strerror(lib_error_code)));
|
---|
| 654 | }
|
---|
| 655 | return 0;
|
---|
| 656 | }
|
---|
| 657 |
|
---|
| 658 | static int on_data_chunk_recv(nghttp2_session *session, uint8_t flags,
|
---|
| 659 | int32_t stream_id,
|
---|
| 660 | const uint8_t *data, size_t len, void *userp)
|
---|
| 661 | {
|
---|
| 662 | struct HTTP *stream;
|
---|
| 663 | struct Curl_easy *data_s;
|
---|
| 664 | size_t nread;
|
---|
| 665 | struct connectdata *conn = (struct connectdata *)userp;
|
---|
| 666 | (void)session;
|
---|
| 667 | (void)flags;
|
---|
| 668 | (void)data;
|
---|
| 669 |
|
---|
| 670 | DEBUGASSERT(stream_id); /* should never be a zero stream ID here */
|
---|
| 671 |
|
---|
| 672 | /* get the stream from the hash based on Stream ID */
|
---|
| 673 | data_s = nghttp2_session_get_stream_user_data(session, stream_id);
|
---|
| 674 | if(!data_s)
|
---|
| 675 | /* Receiving a Stream ID not in the hash should not happen, this is an
|
---|
| 676 | internal error more than anything else! */
|
---|
| 677 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
| 678 |
|
---|
| 679 | stream = data_s->req.protop;
|
---|
| 680 | if(!stream)
|
---|
| 681 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
| 682 |
|
---|
| 683 | nread = MIN(stream->len, len);
|
---|
| 684 | memcpy(&stream->mem[stream->memlen], data, nread);
|
---|
| 685 |
|
---|
| 686 | stream->len -= nread;
|
---|
| 687 | stream->memlen += nread;
|
---|
| 688 |
|
---|
| 689 | data_s->state.drain++;
|
---|
| 690 | conn->proto.httpc.drain_total++;
|
---|
| 691 |
|
---|
| 692 | /* if we receive data for another handle, wake that up */
|
---|
| 693 | if(conn->data != data_s)
|
---|
| 694 | Curl_expire(data_s, 0, EXPIRE_RUN_NOW);
|
---|
| 695 |
|
---|
| 696 | DEBUGF(infof(data_s, "%zu data received for stream %u "
|
---|
| 697 | "(%zu left in buffer %p, total %zu)\n",
|
---|
| 698 | nread, stream_id,
|
---|
| 699 | stream->len, stream->mem,
|
---|
| 700 | stream->memlen));
|
---|
| 701 |
|
---|
| 702 | if(nread < len) {
|
---|
| 703 | stream->pausedata = data + nread;
|
---|
| 704 | stream->pauselen = len - nread;
|
---|
| 705 | DEBUGF(infof(data_s, "NGHTTP2_ERR_PAUSE - %zu bytes out of buffer"
|
---|
| 706 | ", stream %u\n",
|
---|
| 707 | len - nread, stream_id));
|
---|
| 708 | data_s->easy_conn->proto.httpc.pause_stream_id = stream_id;
|
---|
| 709 |
|
---|
| 710 | return NGHTTP2_ERR_PAUSE;
|
---|
| 711 | }
|
---|
| 712 |
|
---|
| 713 | /* pause execution of nghttp2 if we received data for another handle
|
---|
| 714 | in order to process them first. */
|
---|
| 715 | if(conn->data != data_s) {
|
---|
| 716 | data_s->easy_conn->proto.httpc.pause_stream_id = stream_id;
|
---|
| 717 |
|
---|
| 718 | return NGHTTP2_ERR_PAUSE;
|
---|
| 719 | }
|
---|
| 720 |
|
---|
| 721 | return 0;
|
---|
| 722 | }
|
---|
| 723 |
|
---|
| 724 | static int before_frame_send(nghttp2_session *session,
|
---|
| 725 | const nghttp2_frame *frame,
|
---|
| 726 | void *userp)
|
---|
| 727 | {
|
---|
| 728 | struct Curl_easy *data_s;
|
---|
| 729 | (void)userp;
|
---|
| 730 |
|
---|
| 731 | data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
|
---|
| 732 | if(data_s) {
|
---|
| 733 | DEBUGF(infof(data_s, "before_frame_send() was called\n"));
|
---|
| 734 | }
|
---|
| 735 |
|
---|
| 736 | return 0;
|
---|
| 737 | }
|
---|
| 738 | static int on_frame_send(nghttp2_session *session,
|
---|
| 739 | const nghttp2_frame *frame,
|
---|
| 740 | void *userp)
|
---|
| 741 | {
|
---|
| 742 | struct Curl_easy *data_s;
|
---|
| 743 | (void)userp;
|
---|
| 744 |
|
---|
| 745 | data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
|
---|
| 746 | if(data_s) {
|
---|
| 747 | DEBUGF(infof(data_s, "on_frame_send() was called, length = %zd\n",
|
---|
| 748 | frame->hd.length));
|
---|
| 749 | }
|
---|
| 750 | return 0;
|
---|
| 751 | }
|
---|
| 752 | static int on_frame_not_send(nghttp2_session *session,
|
---|
| 753 | const nghttp2_frame *frame,
|
---|
| 754 | int lib_error_code, void *userp)
|
---|
| 755 | {
|
---|
| 756 | struct Curl_easy *data_s;
|
---|
| 757 | (void)userp;
|
---|
| 758 | #if !defined(DEBUGBUILD) || defined(CURL_DISABLE_VERBOSE_STRINGS)
|
---|
| 759 | (void)lib_error_code;
|
---|
| 760 | #endif
|
---|
| 761 |
|
---|
| 762 | data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
|
---|
| 763 | if(data_s) {
|
---|
| 764 | DEBUGF(infof(data_s,
|
---|
| 765 | "on_frame_not_send() was called, lib_error_code = %d\n",
|
---|
| 766 | lib_error_code));
|
---|
| 767 | }
|
---|
| 768 | return 0;
|
---|
| 769 | }
|
---|
| 770 | static int on_stream_close(nghttp2_session *session, int32_t stream_id,
|
---|
| 771 | uint32_t error_code, void *userp)
|
---|
| 772 | {
|
---|
| 773 | struct Curl_easy *data_s;
|
---|
| 774 | struct HTTP *stream;
|
---|
| 775 | struct connectdata *conn = (struct connectdata *)userp;
|
---|
| 776 | (void)session;
|
---|
| 777 | (void)stream_id;
|
---|
| 778 |
|
---|
| 779 | if(stream_id) {
|
---|
| 780 | /* get the stream from the hash based on Stream ID, stream ID zero is for
|
---|
| 781 | connection-oriented stuff */
|
---|
| 782 | data_s = nghttp2_session_get_stream_user_data(session, stream_id);
|
---|
| 783 | if(!data_s) {
|
---|
| 784 | /* We could get stream ID not in the hash. For example, if we
|
---|
| 785 | decided to reject stream (e.g., PUSH_PROMISE). */
|
---|
| 786 | return 0;
|
---|
| 787 | }
|
---|
| 788 | DEBUGF(infof(data_s, "on_stream_close(), %s (err %d), stream %u\n",
|
---|
| 789 | Curl_http2_strerror(error_code), error_code, stream_id));
|
---|
| 790 | stream = data_s->req.protop;
|
---|
| 791 | if(!stream)
|
---|
| 792 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
| 793 |
|
---|
| 794 | stream->error_code = error_code;
|
---|
| 795 | stream->closed = TRUE;
|
---|
| 796 | data_s->state.drain++;
|
---|
| 797 | conn->proto.httpc.drain_total++;
|
---|
| 798 |
|
---|
| 799 | /* remove the entry from the hash as the stream is now gone */
|
---|
| 800 | nghttp2_session_set_stream_user_data(session, stream_id, 0);
|
---|
| 801 | DEBUGF(infof(data_s, "Removed stream %u hash!\n", stream_id));
|
---|
| 802 | }
|
---|
| 803 | return 0;
|
---|
| 804 | }
|
---|
| 805 |
|
---|
| 806 | static int on_begin_headers(nghttp2_session *session,
|
---|
| 807 | const nghttp2_frame *frame, void *userp)
|
---|
| 808 | {
|
---|
| 809 | struct HTTP *stream;
|
---|
| 810 | struct Curl_easy *data_s = NULL;
|
---|
| 811 | (void)userp;
|
---|
| 812 |
|
---|
| 813 | data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
|
---|
| 814 | if(!data_s) {
|
---|
| 815 | return 0;
|
---|
| 816 | }
|
---|
| 817 |
|
---|
| 818 | DEBUGF(infof(data_s, "on_begin_headers() was called\n"));
|
---|
| 819 |
|
---|
| 820 | if(frame->hd.type != NGHTTP2_HEADERS) {
|
---|
| 821 | return 0;
|
---|
| 822 | }
|
---|
| 823 |
|
---|
| 824 | stream = data_s->req.protop;
|
---|
| 825 | if(!stream || !stream->bodystarted) {
|
---|
| 826 | return 0;
|
---|
| 827 | }
|
---|
| 828 |
|
---|
| 829 | /* This is trailer HEADERS started. Allocate buffer for them. */
|
---|
| 830 | DEBUGF(infof(data_s, "trailer field started\n"));
|
---|
| 831 |
|
---|
| 832 | DEBUGASSERT(stream->trailer_recvbuf == NULL);
|
---|
| 833 |
|
---|
| 834 | stream->trailer_recvbuf = Curl_add_buffer_init();
|
---|
| 835 | if(!stream->trailer_recvbuf) {
|
---|
| 836 | return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
|
---|
| 837 | }
|
---|
| 838 |
|
---|
| 839 | return 0;
|
---|
| 840 | }
|
---|
| 841 |
|
---|
| 842 | /* Decode HTTP status code. Returns -1 if no valid status code was
|
---|
| 843 | decoded. */
|
---|
| 844 | static int decode_status_code(const uint8_t *value, size_t len)
|
---|
| 845 | {
|
---|
| 846 | int i;
|
---|
| 847 | int res;
|
---|
| 848 |
|
---|
| 849 | if(len != 3) {
|
---|
| 850 | return -1;
|
---|
| 851 | }
|
---|
| 852 |
|
---|
| 853 | res = 0;
|
---|
| 854 |
|
---|
| 855 | for(i = 0; i < 3; ++i) {
|
---|
| 856 | char c = value[i];
|
---|
| 857 |
|
---|
| 858 | if(c < '0' || c > '9') {
|
---|
| 859 | return -1;
|
---|
| 860 | }
|
---|
| 861 |
|
---|
| 862 | res *= 10;
|
---|
| 863 | res += c - '0';
|
---|
| 864 | }
|
---|
| 865 |
|
---|
| 866 | return res;
|
---|
| 867 | }
|
---|
| 868 |
|
---|
| 869 | /* frame->hd.type is either NGHTTP2_HEADERS or NGHTTP2_PUSH_PROMISE */
|
---|
| 870 | static int on_header(nghttp2_session *session, const nghttp2_frame *frame,
|
---|
| 871 | const uint8_t *name, size_t namelen,
|
---|
| 872 | const uint8_t *value, size_t valuelen,
|
---|
| 873 | uint8_t flags,
|
---|
| 874 | void *userp)
|
---|
| 875 | {
|
---|
| 876 | struct HTTP *stream;
|
---|
| 877 | struct Curl_easy *data_s;
|
---|
| 878 | int32_t stream_id = frame->hd.stream_id;
|
---|
| 879 | struct connectdata *conn = (struct connectdata *)userp;
|
---|
| 880 | (void)flags;
|
---|
| 881 |
|
---|
| 882 | DEBUGASSERT(stream_id); /* should never be a zero stream ID here */
|
---|
| 883 |
|
---|
| 884 | /* get the stream from the hash based on Stream ID */
|
---|
| 885 | data_s = nghttp2_session_get_stream_user_data(session, stream_id);
|
---|
| 886 | if(!data_s)
|
---|
| 887 | /* Receiving a Stream ID not in the hash should not happen, this is an
|
---|
| 888 | internal error more than anything else! */
|
---|
| 889 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
| 890 |
|
---|
| 891 | stream = data_s->req.protop;
|
---|
| 892 | if(!stream) {
|
---|
| 893 | failf(data_s, "Internal NULL stream! 5\n");
|
---|
| 894 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
| 895 | }
|
---|
| 896 |
|
---|
| 897 | /* Store received PUSH_PROMISE headers to be used when the subsequent
|
---|
| 898 | PUSH_PROMISE callback comes */
|
---|
| 899 | if(frame->hd.type == NGHTTP2_PUSH_PROMISE) {
|
---|
| 900 | char *h;
|
---|
| 901 |
|
---|
| 902 | if(!stream->push_headers) {
|
---|
| 903 | stream->push_headers_alloc = 10;
|
---|
| 904 | stream->push_headers = malloc(stream->push_headers_alloc *
|
---|
| 905 | sizeof(char *));
|
---|
| 906 | stream->push_headers_used = 0;
|
---|
| 907 | }
|
---|
| 908 | else if(stream->push_headers_used ==
|
---|
| 909 | stream->push_headers_alloc) {
|
---|
| 910 | char **headp;
|
---|
| 911 | stream->push_headers_alloc *= 2;
|
---|
| 912 | headp = Curl_saferealloc(stream->push_headers,
|
---|
| 913 | stream->push_headers_alloc * sizeof(char *));
|
---|
| 914 | if(!headp) {
|
---|
| 915 | stream->push_headers = NULL;
|
---|
| 916 | return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
|
---|
| 917 | }
|
---|
| 918 | stream->push_headers = headp;
|
---|
| 919 | }
|
---|
| 920 | h = aprintf("%s:%s", name, value);
|
---|
| 921 | if(h)
|
---|
| 922 | stream->push_headers[stream->push_headers_used++] = h;
|
---|
| 923 | return 0;
|
---|
| 924 | }
|
---|
| 925 |
|
---|
| 926 | if(stream->bodystarted) {
|
---|
| 927 | /* This is trailer fields. */
|
---|
| 928 | /* 3 is for ":" and "\r\n". */
|
---|
| 929 | uint32_t n = (uint32_t)(namelen + valuelen + 3);
|
---|
| 930 |
|
---|
| 931 | DEBUGF(infof(data_s, "h2 trailer: %.*s: %.*s\n", namelen, name, valuelen,
|
---|
| 932 | value));
|
---|
| 933 |
|
---|
| 934 | Curl_add_buffer(stream->trailer_recvbuf, &n, sizeof(n));
|
---|
| 935 | Curl_add_buffer(stream->trailer_recvbuf, name, namelen);
|
---|
| 936 | Curl_add_buffer(stream->trailer_recvbuf, ": ", 2);
|
---|
| 937 | Curl_add_buffer(stream->trailer_recvbuf, value, valuelen);
|
---|
| 938 | Curl_add_buffer(stream->trailer_recvbuf, "\r\n\0", 3);
|
---|
| 939 |
|
---|
| 940 | return 0;
|
---|
| 941 | }
|
---|
| 942 |
|
---|
| 943 | if(namelen == sizeof(":status") - 1 &&
|
---|
| 944 | memcmp(":status", name, namelen) == 0) {
|
---|
| 945 | /* nghttp2 guarantees :status is received first and only once, and
|
---|
| 946 | value is 3 digits status code, and decode_status_code always
|
---|
| 947 | succeeds. */
|
---|
| 948 | stream->status_code = decode_status_code(value, valuelen);
|
---|
| 949 | DEBUGASSERT(stream->status_code != -1);
|
---|
| 950 |
|
---|
| 951 | Curl_add_buffer(stream->header_recvbuf, "HTTP/2 ", 7);
|
---|
| 952 | Curl_add_buffer(stream->header_recvbuf, value, valuelen);
|
---|
| 953 | /* the space character after the status code is mandatory */
|
---|
| 954 | Curl_add_buffer(stream->header_recvbuf, " \r\n", 3);
|
---|
| 955 | /* if we receive data for another handle, wake that up */
|
---|
| 956 | if(conn->data != data_s)
|
---|
| 957 | Curl_expire(data_s, 0, EXPIRE_RUN_NOW);
|
---|
| 958 |
|
---|
| 959 | DEBUGF(infof(data_s, "h2 status: HTTP/2 %03d (easy %p)\n",
|
---|
| 960 | stream->status_code, data_s));
|
---|
| 961 | return 0;
|
---|
| 962 | }
|
---|
| 963 |
|
---|
| 964 | /* nghttp2 guarantees that namelen > 0, and :status was already
|
---|
| 965 | received, and this is not pseudo-header field . */
|
---|
| 966 | /* convert to a HTTP1-style header */
|
---|
| 967 | Curl_add_buffer(stream->header_recvbuf, name, namelen);
|
---|
| 968 | Curl_add_buffer(stream->header_recvbuf, ": ", 2);
|
---|
| 969 | Curl_add_buffer(stream->header_recvbuf, value, valuelen);
|
---|
| 970 | Curl_add_buffer(stream->header_recvbuf, "\r\n", 2);
|
---|
| 971 | /* if we receive data for another handle, wake that up */
|
---|
| 972 | if(conn->data != data_s)
|
---|
| 973 | Curl_expire(data_s, 0, EXPIRE_RUN_NOW);
|
---|
| 974 |
|
---|
| 975 | DEBUGF(infof(data_s, "h2 header: %.*s: %.*s\n", namelen, name, valuelen,
|
---|
| 976 | value));
|
---|
| 977 |
|
---|
| 978 | return 0; /* 0 is successful */
|
---|
| 979 | }
|
---|
| 980 |
|
---|
| 981 | static ssize_t data_source_read_callback(nghttp2_session *session,
|
---|
| 982 | int32_t stream_id,
|
---|
| 983 | uint8_t *buf, size_t length,
|
---|
| 984 | uint32_t *data_flags,
|
---|
| 985 | nghttp2_data_source *source,
|
---|
| 986 | void *userp)
|
---|
| 987 | {
|
---|
| 988 | struct Curl_easy *data_s;
|
---|
| 989 | struct HTTP *stream = NULL;
|
---|
| 990 | size_t nread;
|
---|
| 991 | (void)source;
|
---|
| 992 | (void)userp;
|
---|
| 993 |
|
---|
| 994 | if(stream_id) {
|
---|
| 995 | /* get the stream from the hash based on Stream ID, stream ID zero is for
|
---|
| 996 | connection-oriented stuff */
|
---|
| 997 | data_s = nghttp2_session_get_stream_user_data(session, stream_id);
|
---|
| 998 | if(!data_s)
|
---|
| 999 | /* Receiving a Stream ID not in the hash should not happen, this is an
|
---|
| 1000 | internal error more than anything else! */
|
---|
| 1001 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
| 1002 |
|
---|
| 1003 | stream = data_s->req.protop;
|
---|
| 1004 | if(!stream)
|
---|
| 1005 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
| 1006 | }
|
---|
| 1007 | else
|
---|
| 1008 | return NGHTTP2_ERR_INVALID_ARGUMENT;
|
---|
| 1009 |
|
---|
| 1010 | nread = MIN(stream->upload_len, length);
|
---|
| 1011 | if(nread > 0) {
|
---|
| 1012 | memcpy(buf, stream->upload_mem, nread);
|
---|
| 1013 | stream->upload_mem += nread;
|
---|
| 1014 | stream->upload_len -= nread;
|
---|
| 1015 | if(data_s->state.infilesize != -1)
|
---|
| 1016 | stream->upload_left -= nread;
|
---|
| 1017 | }
|
---|
| 1018 |
|
---|
| 1019 | if(stream->upload_left == 0)
|
---|
| 1020 | *data_flags = NGHTTP2_DATA_FLAG_EOF;
|
---|
| 1021 | else if(nread == 0)
|
---|
| 1022 | return NGHTTP2_ERR_DEFERRED;
|
---|
| 1023 |
|
---|
| 1024 | DEBUGF(infof(data_s, "data_source_read_callback: "
|
---|
| 1025 | "returns %zu bytes stream %u\n",
|
---|
| 1026 | nread, stream_id));
|
---|
| 1027 |
|
---|
| 1028 | return nread;
|
---|
| 1029 | }
|
---|
| 1030 |
|
---|
| 1031 | #define H2_BUFSIZE 32768
|
---|
| 1032 |
|
---|
| 1033 | #ifdef NGHTTP2_HAS_ERROR_CALLBACK
|
---|
| 1034 | static int error_callback(nghttp2_session *session,
|
---|
| 1035 | const char *msg,
|
---|
| 1036 | size_t len,
|
---|
| 1037 | void *userp)
|
---|
| 1038 | {
|
---|
| 1039 | struct connectdata *conn = (struct connectdata *)userp;
|
---|
| 1040 | (void)session;
|
---|
| 1041 | infof(conn->data, "http2 error: %.*s\n", len, msg);
|
---|
| 1042 | return 0;
|
---|
| 1043 | }
|
---|
| 1044 | #endif
|
---|
| 1045 |
|
---|
| 1046 | static void populate_settings(struct connectdata *conn,
|
---|
| 1047 | struct http_conn *httpc)
|
---|
| 1048 | {
|
---|
| 1049 | nghttp2_settings_entry *iv = httpc->local_settings;
|
---|
| 1050 |
|
---|
| 1051 | iv[0].settings_id = NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS;
|
---|
| 1052 | iv[0].value = 100;
|
---|
| 1053 |
|
---|
| 1054 | iv[1].settings_id = NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE;
|
---|
| 1055 | iv[1].value = HTTP2_HUGE_WINDOW_SIZE;
|
---|
| 1056 |
|
---|
| 1057 | iv[2].settings_id = NGHTTP2_SETTINGS_ENABLE_PUSH;
|
---|
| 1058 | iv[2].value = conn->data->multi->push_cb != NULL;
|
---|
| 1059 |
|
---|
| 1060 | httpc->local_settings_num = 3;
|
---|
| 1061 | }
|
---|
| 1062 |
|
---|
| 1063 | void Curl_http2_done(struct connectdata *conn, bool premature)
|
---|
| 1064 | {
|
---|
| 1065 | struct Curl_easy *data = conn->data;
|
---|
| 1066 | struct HTTP *http = data->req.protop;
|
---|
| 1067 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
| 1068 |
|
---|
| 1069 | if(http->header_recvbuf) {
|
---|
| 1070 | DEBUGF(infof(data, "free header_recvbuf!!\n"));
|
---|
| 1071 | Curl_add_buffer_free(http->header_recvbuf);
|
---|
| 1072 | http->header_recvbuf = NULL; /* clear the pointer */
|
---|
| 1073 | Curl_add_buffer_free(http->trailer_recvbuf);
|
---|
| 1074 | http->trailer_recvbuf = NULL; /* clear the pointer */
|
---|
| 1075 | if(http->push_headers) {
|
---|
| 1076 | /* if they weren't used and then freed before */
|
---|
| 1077 | for(; http->push_headers_used > 0; --http->push_headers_used) {
|
---|
| 1078 | free(http->push_headers[http->push_headers_used - 1]);
|
---|
| 1079 | }
|
---|
| 1080 | free(http->push_headers);
|
---|
| 1081 | http->push_headers = NULL;
|
---|
| 1082 | }
|
---|
| 1083 | }
|
---|
| 1084 |
|
---|
| 1085 | if(premature) {
|
---|
| 1086 | /* RST_STREAM */
|
---|
| 1087 | nghttp2_submit_rst_stream(httpc->h2, NGHTTP2_FLAG_NONE, http->stream_id,
|
---|
| 1088 | NGHTTP2_STREAM_CLOSED);
|
---|
| 1089 | if(http->stream_id == httpc->pause_stream_id) {
|
---|
| 1090 | infof(data, "stopped the pause stream!\n");
|
---|
| 1091 | httpc->pause_stream_id = 0;
|
---|
| 1092 | }
|
---|
| 1093 | }
|
---|
| 1094 | if(http->stream_id) {
|
---|
| 1095 | nghttp2_session_set_stream_user_data(httpc->h2, http->stream_id, 0);
|
---|
| 1096 | http->stream_id = 0;
|
---|
| 1097 | }
|
---|
| 1098 | }
|
---|
| 1099 |
|
---|
| 1100 | /*
|
---|
| 1101 | * Initialize nghttp2 for a Curl connection
|
---|
| 1102 | */
|
---|
| 1103 | CURLcode Curl_http2_init(struct connectdata *conn)
|
---|
| 1104 | {
|
---|
| 1105 | if(!conn->proto.httpc.h2) {
|
---|
| 1106 | int rc;
|
---|
| 1107 | nghttp2_session_callbacks *callbacks;
|
---|
| 1108 |
|
---|
| 1109 | conn->proto.httpc.inbuf = malloc(H2_BUFSIZE);
|
---|
| 1110 | if(conn->proto.httpc.inbuf == NULL)
|
---|
| 1111 | return CURLE_OUT_OF_MEMORY;
|
---|
| 1112 |
|
---|
| 1113 | rc = nghttp2_session_callbacks_new(&callbacks);
|
---|
| 1114 |
|
---|
| 1115 | if(rc) {
|
---|
| 1116 | failf(conn->data, "Couldn't initialize nghttp2 callbacks!");
|
---|
| 1117 | return CURLE_OUT_OF_MEMORY; /* most likely at least */
|
---|
| 1118 | }
|
---|
| 1119 |
|
---|
| 1120 | /* nghttp2_send_callback */
|
---|
| 1121 | nghttp2_session_callbacks_set_send_callback(callbacks, send_callback);
|
---|
| 1122 | /* nghttp2_on_frame_recv_callback */
|
---|
| 1123 | nghttp2_session_callbacks_set_on_frame_recv_callback
|
---|
| 1124 | (callbacks, on_frame_recv);
|
---|
| 1125 | /* nghttp2_on_invalid_frame_recv_callback */
|
---|
| 1126 | nghttp2_session_callbacks_set_on_invalid_frame_recv_callback
|
---|
| 1127 | (callbacks, on_invalid_frame_recv);
|
---|
| 1128 | /* nghttp2_on_data_chunk_recv_callback */
|
---|
| 1129 | nghttp2_session_callbacks_set_on_data_chunk_recv_callback
|
---|
| 1130 | (callbacks, on_data_chunk_recv);
|
---|
| 1131 | /* nghttp2_before_frame_send_callback */
|
---|
| 1132 | nghttp2_session_callbacks_set_before_frame_send_callback
|
---|
| 1133 | (callbacks, before_frame_send);
|
---|
| 1134 | /* nghttp2_on_frame_send_callback */
|
---|
| 1135 | nghttp2_session_callbacks_set_on_frame_send_callback
|
---|
| 1136 | (callbacks, on_frame_send);
|
---|
| 1137 | /* nghttp2_on_frame_not_send_callback */
|
---|
| 1138 | nghttp2_session_callbacks_set_on_frame_not_send_callback
|
---|
| 1139 | (callbacks, on_frame_not_send);
|
---|
| 1140 | /* nghttp2_on_stream_close_callback */
|
---|
| 1141 | nghttp2_session_callbacks_set_on_stream_close_callback
|
---|
| 1142 | (callbacks, on_stream_close);
|
---|
| 1143 | /* nghttp2_on_begin_headers_callback */
|
---|
| 1144 | nghttp2_session_callbacks_set_on_begin_headers_callback
|
---|
| 1145 | (callbacks, on_begin_headers);
|
---|
| 1146 | /* nghttp2_on_header_callback */
|
---|
| 1147 | nghttp2_session_callbacks_set_on_header_callback(callbacks, on_header);
|
---|
| 1148 |
|
---|
| 1149 | nghttp2_session_callbacks_set_error_callback(callbacks, error_callback);
|
---|
| 1150 |
|
---|
| 1151 | /* The nghttp2 session is not yet setup, do it */
|
---|
| 1152 | rc = nghttp2_session_client_new(&conn->proto.httpc.h2, callbacks, conn);
|
---|
| 1153 |
|
---|
| 1154 | nghttp2_session_callbacks_del(callbacks);
|
---|
| 1155 |
|
---|
| 1156 | if(rc) {
|
---|
| 1157 | failf(conn->data, "Couldn't initialize nghttp2!");
|
---|
| 1158 | return CURLE_OUT_OF_MEMORY; /* most likely at least */
|
---|
| 1159 | }
|
---|
| 1160 | }
|
---|
| 1161 | return CURLE_OK;
|
---|
| 1162 | }
|
---|
| 1163 |
|
---|
| 1164 | /*
|
---|
| 1165 | * Append headers to ask for a HTTP1.1 to HTTP2 upgrade.
|
---|
| 1166 | */
|
---|
| 1167 | CURLcode Curl_http2_request_upgrade(Curl_send_buffer *req,
|
---|
| 1168 | struct connectdata *conn)
|
---|
| 1169 | {
|
---|
| 1170 | CURLcode result;
|
---|
| 1171 | ssize_t binlen;
|
---|
| 1172 | char *base64;
|
---|
| 1173 | size_t blen;
|
---|
| 1174 | struct SingleRequest *k = &conn->data->req;
|
---|
| 1175 | uint8_t *binsettings = conn->proto.httpc.binsettings;
|
---|
| 1176 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
| 1177 |
|
---|
| 1178 | populate_settings(conn, httpc);
|
---|
| 1179 |
|
---|
| 1180 | /* this returns number of bytes it wrote */
|
---|
| 1181 | binlen = nghttp2_pack_settings_payload(binsettings, H2_BINSETTINGS_LEN,
|
---|
| 1182 | httpc->local_settings,
|
---|
| 1183 | httpc->local_settings_num);
|
---|
| 1184 | if(!binlen) {
|
---|
| 1185 | failf(conn->data, "nghttp2 unexpectedly failed on pack_settings_payload");
|
---|
| 1186 | Curl_add_buffer_free(req);
|
---|
| 1187 | return CURLE_FAILED_INIT;
|
---|
| 1188 | }
|
---|
| 1189 | conn->proto.httpc.binlen = binlen;
|
---|
| 1190 |
|
---|
| 1191 | result = Curl_base64url_encode(conn->data, (const char *)binsettings, binlen,
|
---|
| 1192 | &base64, &blen);
|
---|
| 1193 | if(result) {
|
---|
| 1194 | Curl_add_buffer_free(req);
|
---|
| 1195 | return result;
|
---|
| 1196 | }
|
---|
| 1197 |
|
---|
| 1198 | result = Curl_add_bufferf(req,
|
---|
| 1199 | "Connection: Upgrade, HTTP2-Settings\r\n"
|
---|
| 1200 | "Upgrade: %s\r\n"
|
---|
| 1201 | "HTTP2-Settings: %s\r\n",
|
---|
| 1202 | NGHTTP2_CLEARTEXT_PROTO_VERSION_ID, base64);
|
---|
| 1203 | free(base64);
|
---|
| 1204 |
|
---|
| 1205 | k->upgr101 = UPGR101_REQUESTED;
|
---|
| 1206 |
|
---|
| 1207 | return result;
|
---|
| 1208 | }
|
---|
| 1209 |
|
---|
| 1210 | /*
|
---|
| 1211 | * Returns nonzero if current HTTP/2 session should be closed.
|
---|
| 1212 | */
|
---|
| 1213 | static int should_close_session(struct http_conn *httpc)
|
---|
| 1214 | {
|
---|
| 1215 | return httpc->drain_total == 0 && !nghttp2_session_want_read(httpc->h2) &&
|
---|
| 1216 | !nghttp2_session_want_write(httpc->h2);
|
---|
| 1217 | }
|
---|
| 1218 |
|
---|
| 1219 | static int h2_session_send(struct Curl_easy *data,
|
---|
| 1220 | nghttp2_session *h2);
|
---|
| 1221 |
|
---|
| 1222 | /*
|
---|
| 1223 | * h2_process_pending_input() processes pending input left in
|
---|
| 1224 | * httpc->inbuf. Then, call h2_session_send() to send pending data.
|
---|
| 1225 | * This function returns 0 if it succeeds, or -1 and error code will
|
---|
| 1226 | * be assigned to *err.
|
---|
| 1227 | */
|
---|
| 1228 | static int h2_process_pending_input(struct Curl_easy *data,
|
---|
| 1229 | struct http_conn *httpc,
|
---|
| 1230 | CURLcode *err)
|
---|
| 1231 | {
|
---|
| 1232 | ssize_t nread;
|
---|
| 1233 | char *inbuf;
|
---|
| 1234 | ssize_t rv;
|
---|
| 1235 |
|
---|
| 1236 | nread = httpc->inbuflen - httpc->nread_inbuf;
|
---|
| 1237 | inbuf = httpc->inbuf + httpc->nread_inbuf;
|
---|
| 1238 |
|
---|
| 1239 | rv = nghttp2_session_mem_recv(httpc->h2, (const uint8_t *)inbuf, nread);
|
---|
| 1240 | if(rv < 0) {
|
---|
| 1241 | failf(data,
|
---|
| 1242 | "h2_process_pending_input: nghttp2_session_mem_recv() returned "
|
---|
| 1243 | "%d:%s\n", rv, nghttp2_strerror((int)rv));
|
---|
| 1244 | *err = CURLE_RECV_ERROR;
|
---|
| 1245 | return -1;
|
---|
| 1246 | }
|
---|
| 1247 |
|
---|
| 1248 | if(nread == rv) {
|
---|
| 1249 | DEBUGF(infof(data,
|
---|
| 1250 | "h2_process_pending_input: All data in connection buffer "
|
---|
| 1251 | "processed\n"));
|
---|
| 1252 | httpc->inbuflen = 0;
|
---|
| 1253 | httpc->nread_inbuf = 0;
|
---|
| 1254 | }
|
---|
| 1255 | else {
|
---|
| 1256 | httpc->nread_inbuf += rv;
|
---|
| 1257 | DEBUGF(infof(data,
|
---|
| 1258 | "h2_process_pending_input: %zu bytes left in connection "
|
---|
| 1259 | "buffer\n",
|
---|
| 1260 | httpc->inbuflen - httpc->nread_inbuf));
|
---|
| 1261 | }
|
---|
| 1262 |
|
---|
| 1263 | rv = h2_session_send(data, httpc->h2);
|
---|
| 1264 | if(rv != 0) {
|
---|
| 1265 | *err = CURLE_SEND_ERROR;
|
---|
| 1266 | return -1;
|
---|
| 1267 | }
|
---|
| 1268 |
|
---|
| 1269 | if(should_close_session(httpc)) {
|
---|
| 1270 | DEBUGF(infof(data,
|
---|
| 1271 | "h2_process_pending_input: nothing to do in this session\n"));
|
---|
| 1272 | *err = CURLE_HTTP2;
|
---|
| 1273 | return -1;
|
---|
| 1274 | }
|
---|
| 1275 |
|
---|
| 1276 | return 0;
|
---|
| 1277 | }
|
---|
| 1278 |
|
---|
| 1279 | /*
|
---|
| 1280 | * Called from transfer.c:done_sending when we stop uploading.
|
---|
| 1281 | */
|
---|
| 1282 | CURLcode Curl_http2_done_sending(struct connectdata *conn)
|
---|
| 1283 | {
|
---|
| 1284 | CURLcode result = CURLE_OK;
|
---|
| 1285 |
|
---|
| 1286 | if((conn->handler == &Curl_handler_http2_ssl) ||
|
---|
| 1287 | (conn->handler == &Curl_handler_http2)) {
|
---|
| 1288 | /* make sure this is only attempted for HTTP/2 transfers */
|
---|
| 1289 |
|
---|
| 1290 | struct HTTP *stream = conn->data->req.protop;
|
---|
| 1291 |
|
---|
| 1292 | if(stream->upload_left) {
|
---|
| 1293 | /* If the stream still thinks there's data left to upload. */
|
---|
| 1294 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
| 1295 | nghttp2_session *h2 = httpc->h2;
|
---|
| 1296 |
|
---|
| 1297 | stream->upload_left = 0; /* DONE! */
|
---|
| 1298 |
|
---|
| 1299 | /* resume sending here to trigger the callback to get called again so
|
---|
| 1300 | that it can signal EOF to nghttp2 */
|
---|
| 1301 | (void)nghttp2_session_resume_data(h2, stream->stream_id);
|
---|
| 1302 |
|
---|
| 1303 | (void)h2_process_pending_input(conn->data, httpc, &result);
|
---|
| 1304 | }
|
---|
| 1305 | }
|
---|
| 1306 | return result;
|
---|
| 1307 | }
|
---|
| 1308 |
|
---|
| 1309 |
|
---|
| 1310 | static ssize_t http2_handle_stream_close(struct connectdata *conn,
|
---|
| 1311 | struct Curl_easy *data,
|
---|
| 1312 | struct HTTP *stream, CURLcode *err)
|
---|
| 1313 | {
|
---|
| 1314 | char *trailer_pos, *trailer_end;
|
---|
| 1315 | CURLcode result;
|
---|
| 1316 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
| 1317 |
|
---|
| 1318 | if(httpc->pause_stream_id == stream->stream_id) {
|
---|
| 1319 | httpc->pause_stream_id = 0;
|
---|
| 1320 | }
|
---|
| 1321 |
|
---|
| 1322 | DEBUGASSERT(httpc->drain_total >= data->state.drain);
|
---|
| 1323 | httpc->drain_total -= data->state.drain;
|
---|
| 1324 | data->state.drain = 0;
|
---|
| 1325 |
|
---|
| 1326 | if(httpc->pause_stream_id == 0) {
|
---|
| 1327 | if(h2_process_pending_input(data, httpc, err) != 0) {
|
---|
| 1328 | return -1;
|
---|
| 1329 | }
|
---|
| 1330 | }
|
---|
| 1331 |
|
---|
| 1332 | DEBUGASSERT(data->state.drain == 0);
|
---|
| 1333 |
|
---|
| 1334 | /* Reset to FALSE to prevent infinite loop in readwrite_data function. */
|
---|
| 1335 | stream->closed = FALSE;
|
---|
| 1336 | if(stream->error_code != NGHTTP2_NO_ERROR) {
|
---|
| 1337 | failf(data, "HTTP/2 stream %u was not closed cleanly: %s (err %d)",
|
---|
| 1338 | stream->stream_id, Curl_http2_strerror(stream->error_code),
|
---|
| 1339 | stream->error_code);
|
---|
| 1340 | *err = CURLE_HTTP2_STREAM;
|
---|
| 1341 | return -1;
|
---|
| 1342 | }
|
---|
| 1343 |
|
---|
| 1344 | if(!stream->bodystarted) {
|
---|
| 1345 | failf(data, "HTTP/2 stream %u was closed cleanly, but before getting "
|
---|
| 1346 | " all response header fields, teated as error",
|
---|
| 1347 | stream->stream_id);
|
---|
| 1348 | *err = CURLE_HTTP2_STREAM;
|
---|
| 1349 | return -1;
|
---|
| 1350 | }
|
---|
| 1351 |
|
---|
| 1352 | if(stream->trailer_recvbuf && stream->trailer_recvbuf->buffer) {
|
---|
| 1353 | trailer_pos = stream->trailer_recvbuf->buffer;
|
---|
| 1354 | trailer_end = trailer_pos + stream->trailer_recvbuf->size_used;
|
---|
| 1355 |
|
---|
| 1356 | for(; trailer_pos < trailer_end;) {
|
---|
| 1357 | uint32_t n;
|
---|
| 1358 | memcpy(&n, trailer_pos, sizeof(n));
|
---|
| 1359 | trailer_pos += sizeof(n);
|
---|
| 1360 |
|
---|
| 1361 | result = Curl_client_write(conn, CLIENTWRITE_HEADER, trailer_pos, n);
|
---|
| 1362 | if(result) {
|
---|
| 1363 | *err = result;
|
---|
| 1364 | return -1;
|
---|
| 1365 | }
|
---|
| 1366 |
|
---|
| 1367 | trailer_pos += n + 1;
|
---|
| 1368 | }
|
---|
| 1369 | }
|
---|
| 1370 |
|
---|
| 1371 | stream->close_handled = TRUE;
|
---|
| 1372 |
|
---|
| 1373 | DEBUGF(infof(data, "http2_recv returns 0, http2_handle_stream_close\n"));
|
---|
| 1374 | return 0;
|
---|
| 1375 | }
|
---|
| 1376 |
|
---|
| 1377 | /*
|
---|
| 1378 | * h2_pri_spec() fills in the pri_spec struct, used by nghttp2 to send weight
|
---|
| 1379 | * and dependency to the peer. It also stores the updated values in the state
|
---|
| 1380 | * struct.
|
---|
| 1381 | */
|
---|
| 1382 |
|
---|
| 1383 | static void h2_pri_spec(struct Curl_easy *data,
|
---|
| 1384 | nghttp2_priority_spec *pri_spec)
|
---|
| 1385 | {
|
---|
| 1386 | struct HTTP *depstream = (data->set.stream_depends_on?
|
---|
| 1387 | data->set.stream_depends_on->req.protop:NULL);
|
---|
| 1388 | int32_t depstream_id = depstream? depstream->stream_id:0;
|
---|
| 1389 | nghttp2_priority_spec_init(pri_spec, depstream_id, data->set.stream_weight,
|
---|
| 1390 | data->set.stream_depends_e);
|
---|
| 1391 | data->state.stream_weight = data->set.stream_weight;
|
---|
| 1392 | data->state.stream_depends_e = data->set.stream_depends_e;
|
---|
| 1393 | data->state.stream_depends_on = data->set.stream_depends_on;
|
---|
| 1394 | }
|
---|
| 1395 |
|
---|
| 1396 | /*
|
---|
| 1397 | * h2_session_send() checks if there's been an update in the priority /
|
---|
| 1398 | * dependency settings and if so it submits a PRIORITY frame with the updated
|
---|
| 1399 | * info.
|
---|
| 1400 | */
|
---|
| 1401 | static int h2_session_send(struct Curl_easy *data,
|
---|
| 1402 | nghttp2_session *h2)
|
---|
| 1403 | {
|
---|
| 1404 | struct HTTP *stream = data->req.protop;
|
---|
| 1405 | if((data->set.stream_weight != data->state.stream_weight) ||
|
---|
| 1406 | (data->set.stream_depends_e != data->state.stream_depends_e) ||
|
---|
| 1407 | (data->set.stream_depends_on != data->state.stream_depends_on) ) {
|
---|
| 1408 | /* send new weight and/or dependency */
|
---|
| 1409 | nghttp2_priority_spec pri_spec;
|
---|
| 1410 | int rv;
|
---|
| 1411 |
|
---|
| 1412 | h2_pri_spec(data, &pri_spec);
|
---|
| 1413 |
|
---|
| 1414 | DEBUGF(infof(data, "Queuing PRIORITY on stream %u (easy %p)\n",
|
---|
| 1415 | stream->stream_id, data));
|
---|
| 1416 | rv = nghttp2_submit_priority(h2, NGHTTP2_FLAG_NONE, stream->stream_id,
|
---|
| 1417 | &pri_spec);
|
---|
| 1418 | if(rv)
|
---|
| 1419 | return rv;
|
---|
| 1420 | }
|
---|
| 1421 |
|
---|
| 1422 | return nghttp2_session_send(h2);
|
---|
| 1423 | }
|
---|
| 1424 |
|
---|
| 1425 | static ssize_t http2_recv(struct connectdata *conn, int sockindex,
|
---|
| 1426 | char *mem, size_t len, CURLcode *err)
|
---|
| 1427 | {
|
---|
| 1428 | CURLcode result = CURLE_OK;
|
---|
| 1429 | ssize_t rv;
|
---|
| 1430 | ssize_t nread;
|
---|
| 1431 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
| 1432 | struct Curl_easy *data = conn->data;
|
---|
| 1433 | struct HTTP *stream = data->req.protop;
|
---|
| 1434 |
|
---|
| 1435 | (void)sockindex; /* we always do HTTP2 on sockindex 0 */
|
---|
| 1436 |
|
---|
| 1437 | if(should_close_session(httpc)) {
|
---|
| 1438 | DEBUGF(infof(data,
|
---|
| 1439 | "http2_recv: nothing to do in this session\n"));
|
---|
| 1440 | *err = CURLE_HTTP2;
|
---|
| 1441 | return -1;
|
---|
| 1442 | }
|
---|
| 1443 |
|
---|
| 1444 | /* Nullify here because we call nghttp2_session_send() and they
|
---|
| 1445 | might refer to the old buffer. */
|
---|
| 1446 | stream->upload_mem = NULL;
|
---|
| 1447 | stream->upload_len = 0;
|
---|
| 1448 |
|
---|
| 1449 | /*
|
---|
| 1450 | * At this point 'stream' is just in the Curl_easy the connection
|
---|
| 1451 | * identifies as its owner at this time.
|
---|
| 1452 | */
|
---|
| 1453 |
|
---|
| 1454 | if(stream->bodystarted &&
|
---|
| 1455 | stream->nread_header_recvbuf < stream->header_recvbuf->size_used) {
|
---|
| 1456 | /* If there is body data pending for this stream to return, do that */
|
---|
| 1457 | size_t left =
|
---|
| 1458 | stream->header_recvbuf->size_used - stream->nread_header_recvbuf;
|
---|
| 1459 | size_t ncopy = MIN(len, left);
|
---|
| 1460 | memcpy(mem, stream->header_recvbuf->buffer + stream->nread_header_recvbuf,
|
---|
| 1461 | ncopy);
|
---|
| 1462 | stream->nread_header_recvbuf += ncopy;
|
---|
| 1463 |
|
---|
| 1464 | DEBUGF(infof(data, "http2_recv: Got %d bytes from header_recvbuf\n",
|
---|
| 1465 | (int)ncopy));
|
---|
| 1466 | return ncopy;
|
---|
| 1467 | }
|
---|
| 1468 |
|
---|
| 1469 | DEBUGF(infof(data, "http2_recv: easy %p (stream %u)\n",
|
---|
| 1470 | data, stream->stream_id));
|
---|
| 1471 |
|
---|
| 1472 | if((data->state.drain) && stream->memlen) {
|
---|
| 1473 | DEBUGF(infof(data, "http2_recv: DRAIN %zu bytes stream %u!! (%p => %p)\n",
|
---|
| 1474 | stream->memlen, stream->stream_id,
|
---|
| 1475 | stream->mem, mem));
|
---|
| 1476 | if(mem != stream->mem) {
|
---|
| 1477 | /* if we didn't get the same buffer this time, we must move the data to
|
---|
| 1478 | the beginning */
|
---|
| 1479 | memmove(mem, stream->mem, stream->memlen);
|
---|
| 1480 | stream->len = len - stream->memlen;
|
---|
| 1481 | stream->mem = mem;
|
---|
| 1482 | }
|
---|
| 1483 | if(httpc->pause_stream_id == stream->stream_id && !stream->pausedata) {
|
---|
| 1484 | /* We have paused nghttp2, but we have no pause data (see
|
---|
| 1485 | on_data_chunk_recv). */
|
---|
| 1486 | httpc->pause_stream_id = 0;
|
---|
| 1487 | if(h2_process_pending_input(data, httpc, &result) != 0) {
|
---|
| 1488 | *err = result;
|
---|
| 1489 | return -1;
|
---|
| 1490 | }
|
---|
| 1491 | }
|
---|
| 1492 | }
|
---|
| 1493 | else if(stream->pausedata) {
|
---|
| 1494 | DEBUGASSERT(httpc->pause_stream_id == stream->stream_id);
|
---|
| 1495 | nread = MIN(len, stream->pauselen);
|
---|
| 1496 | memcpy(mem, stream->pausedata, nread);
|
---|
| 1497 |
|
---|
| 1498 | stream->pausedata += nread;
|
---|
| 1499 | stream->pauselen -= nread;
|
---|
| 1500 |
|
---|
| 1501 | infof(data, "%zu data bytes written\n", nread);
|
---|
| 1502 | if(stream->pauselen == 0) {
|
---|
| 1503 | DEBUGF(infof(data, "Unpaused by stream %u\n", stream->stream_id));
|
---|
| 1504 | DEBUGASSERT(httpc->pause_stream_id == stream->stream_id);
|
---|
| 1505 | httpc->pause_stream_id = 0;
|
---|
| 1506 |
|
---|
| 1507 | stream->pausedata = NULL;
|
---|
| 1508 | stream->pauselen = 0;
|
---|
| 1509 |
|
---|
| 1510 | /* When NGHTTP2_ERR_PAUSE is returned from
|
---|
| 1511 | data_source_read_callback, we might not process DATA frame
|
---|
| 1512 | fully. Calling nghttp2_session_mem_recv() again will
|
---|
| 1513 | continue to process DATA frame, but if there is no incoming
|
---|
| 1514 | frames, then we have to call it again with 0-length data.
|
---|
| 1515 | Without this, on_stream_close callback will not be called,
|
---|
| 1516 | and stream could be hanged. */
|
---|
| 1517 | if(h2_process_pending_input(data, httpc, &result) != 0) {
|
---|
| 1518 | *err = result;
|
---|
| 1519 | return -1;
|
---|
| 1520 | }
|
---|
| 1521 | }
|
---|
| 1522 | DEBUGF(infof(data, "http2_recv: returns unpaused %zd bytes on stream %u\n",
|
---|
| 1523 | nread, stream->stream_id));
|
---|
| 1524 | return nread;
|
---|
| 1525 | }
|
---|
| 1526 | else if(httpc->pause_stream_id) {
|
---|
| 1527 | /* If a stream paused nghttp2_session_mem_recv previously, and has
|
---|
| 1528 | not processed all data, it still refers to the buffer in
|
---|
| 1529 | nghttp2_session. If we call nghttp2_session_mem_recv(), we may
|
---|
| 1530 | overwrite that buffer. To avoid that situation, just return
|
---|
| 1531 | here with CURLE_AGAIN. This could be busy loop since data in
|
---|
| 1532 | socket is not read. But it seems that usually streams are
|
---|
| 1533 | notified with its drain property, and socket is read again
|
---|
| 1534 | quickly. */
|
---|
| 1535 | DEBUGF(infof(data, "stream %x is paused, pause id: %x\n",
|
---|
| 1536 | stream->stream_id, httpc->pause_stream_id));
|
---|
| 1537 | *err = CURLE_AGAIN;
|
---|
| 1538 | return -1;
|
---|
| 1539 | }
|
---|
| 1540 | else {
|
---|
| 1541 | char *inbuf;
|
---|
| 1542 | /* remember where to store incoming data for this stream and how big the
|
---|
| 1543 | buffer is */
|
---|
| 1544 | stream->mem = mem;
|
---|
| 1545 | stream->len = len;
|
---|
| 1546 | stream->memlen = 0;
|
---|
| 1547 |
|
---|
| 1548 | if(httpc->inbuflen == 0) {
|
---|
| 1549 | nread = ((Curl_recv *)httpc->recv_underlying)(
|
---|
| 1550 | conn, FIRSTSOCKET, httpc->inbuf, H2_BUFSIZE, &result);
|
---|
| 1551 |
|
---|
| 1552 | if(nread == -1) {
|
---|
| 1553 | if(result != CURLE_AGAIN)
|
---|
| 1554 | failf(data, "Failed receiving HTTP2 data");
|
---|
| 1555 | else if(stream->closed)
|
---|
| 1556 | /* received when the stream was already closed! */
|
---|
| 1557 | return http2_handle_stream_close(conn, data, stream, err);
|
---|
| 1558 |
|
---|
| 1559 | *err = result;
|
---|
| 1560 | return -1;
|
---|
| 1561 | }
|
---|
| 1562 |
|
---|
| 1563 | if(nread == 0) {
|
---|
| 1564 | failf(data, "Unexpected EOF");
|
---|
| 1565 | *err = CURLE_RECV_ERROR;
|
---|
| 1566 | return -1;
|
---|
| 1567 | }
|
---|
| 1568 |
|
---|
| 1569 | DEBUGF(infof(data, "nread=%zd\n", nread));
|
---|
| 1570 |
|
---|
| 1571 | httpc->inbuflen = nread;
|
---|
| 1572 | inbuf = httpc->inbuf;
|
---|
| 1573 | }
|
---|
| 1574 | else {
|
---|
| 1575 | nread = httpc->inbuflen - httpc->nread_inbuf;
|
---|
| 1576 | inbuf = httpc->inbuf + httpc->nread_inbuf;
|
---|
| 1577 |
|
---|
| 1578 | DEBUGF(infof(data, "Use data left in connection buffer, nread=%zd\n",
|
---|
| 1579 | nread));
|
---|
| 1580 | }
|
---|
| 1581 | rv = nghttp2_session_mem_recv(httpc->h2, (const uint8_t *)inbuf, nread);
|
---|
| 1582 |
|
---|
| 1583 | if(nghttp2_is_fatal((int)rv)) {
|
---|
| 1584 | failf(data, "nghttp2_session_mem_recv() returned %d:%s\n",
|
---|
| 1585 | rv, nghttp2_strerror((int)rv));
|
---|
| 1586 | *err = CURLE_RECV_ERROR;
|
---|
| 1587 | return -1;
|
---|
| 1588 | }
|
---|
| 1589 | DEBUGF(infof(data, "nghttp2_session_mem_recv() returns %zd\n", rv));
|
---|
| 1590 | if(nread == rv) {
|
---|
| 1591 | DEBUGF(infof(data, "All data in connection buffer processed\n"));
|
---|
| 1592 | httpc->inbuflen = 0;
|
---|
| 1593 | httpc->nread_inbuf = 0;
|
---|
| 1594 | }
|
---|
| 1595 | else {
|
---|
| 1596 | httpc->nread_inbuf += rv;
|
---|
| 1597 | DEBUGF(infof(data, "%zu bytes left in connection buffer\n",
|
---|
| 1598 | httpc->inbuflen - httpc->nread_inbuf));
|
---|
| 1599 | }
|
---|
| 1600 | /* Always send pending frames in nghttp2 session, because
|
---|
| 1601 | nghttp2_session_mem_recv() may queue new frame */
|
---|
| 1602 | rv = h2_session_send(data, httpc->h2);
|
---|
| 1603 | if(rv != 0) {
|
---|
| 1604 | *err = CURLE_SEND_ERROR;
|
---|
| 1605 | return -1;
|
---|
| 1606 | }
|
---|
| 1607 |
|
---|
| 1608 | if(should_close_session(httpc)) {
|
---|
| 1609 | DEBUGF(infof(data, "http2_recv: nothing to do in this session\n"));
|
---|
| 1610 | *err = CURLE_HTTP2;
|
---|
| 1611 | return -1;
|
---|
| 1612 | }
|
---|
| 1613 | }
|
---|
| 1614 | if(stream->memlen) {
|
---|
| 1615 | ssize_t retlen = stream->memlen;
|
---|
| 1616 | DEBUGF(infof(data, "http2_recv: returns %zd for stream %u\n",
|
---|
| 1617 | retlen, stream->stream_id));
|
---|
| 1618 | stream->memlen = 0;
|
---|
| 1619 |
|
---|
| 1620 | if(httpc->pause_stream_id == stream->stream_id) {
|
---|
| 1621 | /* data for this stream is returned now, but this stream caused a pause
|
---|
| 1622 | already so we need it called again asap */
|
---|
| 1623 | DEBUGF(infof(data, "Data returned for PAUSED stream %u\n",
|
---|
| 1624 | stream->stream_id));
|
---|
| 1625 | }
|
---|
| 1626 | else if(!stream->closed) {
|
---|
| 1627 | DEBUGASSERT(httpc->drain_total >= data->state.drain);
|
---|
| 1628 | httpc->drain_total -= data->state.drain;
|
---|
| 1629 | data->state.drain = 0; /* this stream is hereby drained */
|
---|
| 1630 | }
|
---|
| 1631 |
|
---|
| 1632 | return retlen;
|
---|
| 1633 | }
|
---|
| 1634 | /* If stream is closed, return 0 to signal the http routine to close
|
---|
| 1635 | the connection */
|
---|
| 1636 | if(stream->closed) {
|
---|
| 1637 | return http2_handle_stream_close(conn, data, stream, err);
|
---|
| 1638 | }
|
---|
| 1639 | *err = CURLE_AGAIN;
|
---|
| 1640 | DEBUGF(infof(data, "http2_recv returns AGAIN for stream %u\n",
|
---|
| 1641 | stream->stream_id));
|
---|
| 1642 | return -1;
|
---|
| 1643 | }
|
---|
| 1644 |
|
---|
| 1645 | /* Index where :authority header field will appear in request header
|
---|
| 1646 | field list. */
|
---|
| 1647 | #define AUTHORITY_DST_IDX 3
|
---|
| 1648 |
|
---|
| 1649 | #define HEADER_OVERFLOW(x) \
|
---|
| 1650 | (x.namelen > (uint16_t)-1 || x.valuelen > (uint16_t)-1 - x.namelen)
|
---|
| 1651 |
|
---|
| 1652 | /*
|
---|
| 1653 | * Check header memory for the token "trailers".
|
---|
| 1654 | * Parse the tokens as separated by comma and surrounded by whitespace.
|
---|
| 1655 | * Returns TRUE if found or FALSE if not.
|
---|
| 1656 | */
|
---|
| 1657 | static bool contains_trailers(const char *p, size_t len)
|
---|
| 1658 | {
|
---|
| 1659 | const char *end = p + len;
|
---|
| 1660 | for(;;) {
|
---|
| 1661 | for(; p != end && (*p == ' ' || *p == '\t'); ++p)
|
---|
| 1662 | ;
|
---|
| 1663 | if(p == end || (size_t)(end - p) < sizeof("trailers") - 1)
|
---|
| 1664 | return FALSE;
|
---|
| 1665 | if(strncasecompare("trailers", p, sizeof("trailers") - 1)) {
|
---|
| 1666 | p += sizeof("trailers") - 1;
|
---|
| 1667 | for(; p != end && (*p == ' ' || *p == '\t'); ++p)
|
---|
| 1668 | ;
|
---|
| 1669 | if(p == end || *p == ',')
|
---|
| 1670 | return TRUE;
|
---|
| 1671 | }
|
---|
| 1672 | /* skip to next token */
|
---|
| 1673 | for(; p != end && *p != ','; ++p)
|
---|
| 1674 | ;
|
---|
| 1675 | if(p == end)
|
---|
| 1676 | return FALSE;
|
---|
| 1677 | ++p;
|
---|
| 1678 | }
|
---|
| 1679 | }
|
---|
| 1680 |
|
---|
| 1681 | typedef enum {
|
---|
| 1682 | /* Send header to server */
|
---|
| 1683 | HEADERINST_FORWARD,
|
---|
| 1684 | /* Don't send header to server */
|
---|
| 1685 | HEADERINST_IGNORE,
|
---|
| 1686 | /* Discard header, and replace it with "te: trailers" */
|
---|
| 1687 | HEADERINST_TE_TRAILERS
|
---|
| 1688 | } header_instruction;
|
---|
| 1689 |
|
---|
| 1690 | /* Decides how to treat given header field. */
|
---|
| 1691 | static header_instruction inspect_header(const char *name, size_t namelen,
|
---|
| 1692 | const char *value, size_t valuelen) {
|
---|
| 1693 | switch(namelen) {
|
---|
| 1694 | case 2:
|
---|
| 1695 | if(!strncasecompare("te", name, namelen))
|
---|
| 1696 | return HEADERINST_FORWARD;
|
---|
| 1697 |
|
---|
| 1698 | return contains_trailers(value, valuelen) ?
|
---|
| 1699 | HEADERINST_TE_TRAILERS : HEADERINST_IGNORE;
|
---|
| 1700 | case 7:
|
---|
| 1701 | return strncasecompare("upgrade", name, namelen) ?
|
---|
| 1702 | HEADERINST_IGNORE : HEADERINST_FORWARD;
|
---|
| 1703 | case 10:
|
---|
| 1704 | return (strncasecompare("connection", name, namelen) ||
|
---|
| 1705 | strncasecompare("keep-alive", name, namelen)) ?
|
---|
| 1706 | HEADERINST_IGNORE : HEADERINST_FORWARD;
|
---|
| 1707 | case 16:
|
---|
| 1708 | return strncasecompare("proxy-connection", name, namelen) ?
|
---|
| 1709 | HEADERINST_IGNORE : HEADERINST_FORWARD;
|
---|
| 1710 | case 17:
|
---|
| 1711 | return strncasecompare("transfer-encoding", name, namelen) ?
|
---|
| 1712 | HEADERINST_IGNORE : HEADERINST_FORWARD;
|
---|
| 1713 | default:
|
---|
| 1714 | return HEADERINST_FORWARD;
|
---|
| 1715 | }
|
---|
| 1716 | }
|
---|
| 1717 |
|
---|
| 1718 | static ssize_t http2_send(struct connectdata *conn, int sockindex,
|
---|
| 1719 | const void *mem, size_t len, CURLcode *err)
|
---|
| 1720 | {
|
---|
| 1721 | /*
|
---|
| 1722 | * BIG TODO: Currently, we send request in this function, but this
|
---|
| 1723 | * function is also used to send request body. It would be nice to
|
---|
| 1724 | * add dedicated function for request.
|
---|
| 1725 | */
|
---|
| 1726 | int rv;
|
---|
| 1727 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
| 1728 | struct HTTP *stream = conn->data->req.protop;
|
---|
| 1729 | nghttp2_nv *nva = NULL;
|
---|
| 1730 | size_t nheader;
|
---|
| 1731 | size_t i;
|
---|
| 1732 | size_t authority_idx;
|
---|
| 1733 | char *hdbuf = (char *)mem;
|
---|
| 1734 | char *end, *line_end;
|
---|
| 1735 | nghttp2_data_provider data_prd;
|
---|
| 1736 | int32_t stream_id;
|
---|
| 1737 | nghttp2_session *h2 = httpc->h2;
|
---|
| 1738 | nghttp2_priority_spec pri_spec;
|
---|
| 1739 |
|
---|
| 1740 | (void)sockindex;
|
---|
| 1741 |
|
---|
| 1742 | DEBUGF(infof(conn->data, "http2_send len=%zu\n", len));
|
---|
| 1743 |
|
---|
| 1744 | if(stream->stream_id != -1) {
|
---|
| 1745 | if(stream->close_handled) {
|
---|
| 1746 | infof(conn->data, "stream %d closed\n", stream->stream_id);
|
---|
| 1747 | *err = CURLE_HTTP2_STREAM;
|
---|
| 1748 | return -1;
|
---|
| 1749 | }
|
---|
| 1750 | else if(stream->closed) {
|
---|
| 1751 | return http2_handle_stream_close(conn, conn->data, stream, err);
|
---|
| 1752 | }
|
---|
| 1753 | /* If stream_id != -1, we have dispatched request HEADERS, and now
|
---|
| 1754 | are going to send or sending request body in DATA frame */
|
---|
| 1755 | stream->upload_mem = mem;
|
---|
| 1756 | stream->upload_len = len;
|
---|
| 1757 | nghttp2_session_resume_data(h2, stream->stream_id);
|
---|
| 1758 | rv = h2_session_send(conn->data, h2);
|
---|
| 1759 | if(nghttp2_is_fatal(rv)) {
|
---|
| 1760 | *err = CURLE_SEND_ERROR;
|
---|
| 1761 | return -1;
|
---|
| 1762 | }
|
---|
| 1763 | len -= stream->upload_len;
|
---|
| 1764 |
|
---|
| 1765 | /* Nullify here because we call nghttp2_session_send() and they
|
---|
| 1766 | might refer to the old buffer. */
|
---|
| 1767 | stream->upload_mem = NULL;
|
---|
| 1768 | stream->upload_len = 0;
|
---|
| 1769 |
|
---|
| 1770 | if(should_close_session(httpc)) {
|
---|
| 1771 | DEBUGF(infof(conn->data, "http2_send: nothing to do in this session\n"));
|
---|
| 1772 | *err = CURLE_HTTP2;
|
---|
| 1773 | return -1;
|
---|
| 1774 | }
|
---|
| 1775 |
|
---|
| 1776 | if(stream->upload_left) {
|
---|
| 1777 | /* we are sure that we have more data to send here. Calling the
|
---|
| 1778 | following API will make nghttp2_session_want_write() return
|
---|
| 1779 | nonzero if remote window allows it, which then libcurl checks
|
---|
| 1780 | socket is writable or not. See http2_perform_getsock(). */
|
---|
| 1781 | nghttp2_session_resume_data(h2, stream->stream_id);
|
---|
| 1782 | }
|
---|
| 1783 |
|
---|
| 1784 | DEBUGF(infof(conn->data, "http2_send returns %zu for stream %u\n", len,
|
---|
| 1785 | stream->stream_id));
|
---|
| 1786 | return len;
|
---|
| 1787 | }
|
---|
| 1788 |
|
---|
| 1789 | /* Calculate number of headers contained in [mem, mem + len) */
|
---|
| 1790 | /* Here, we assume the curl http code generate *correct* HTTP header
|
---|
| 1791 | field block */
|
---|
| 1792 | nheader = 0;
|
---|
| 1793 | for(i = 1; i < len; ++i) {
|
---|
| 1794 | if(hdbuf[i] == '\n' && hdbuf[i - 1] == '\r') {
|
---|
| 1795 | ++nheader;
|
---|
| 1796 | ++i;
|
---|
| 1797 | }
|
---|
| 1798 | }
|
---|
| 1799 | if(nheader < 2)
|
---|
| 1800 | goto fail;
|
---|
| 1801 |
|
---|
| 1802 | /* We counted additional 2 \r\n in the first and last line. We need 3
|
---|
| 1803 | new headers: :method, :path and :scheme. Therefore we need one
|
---|
| 1804 | more space. */
|
---|
| 1805 | nheader += 1;
|
---|
| 1806 | nva = malloc(sizeof(nghttp2_nv) * nheader);
|
---|
| 1807 | if(nva == NULL) {
|
---|
| 1808 | *err = CURLE_OUT_OF_MEMORY;
|
---|
| 1809 | return -1;
|
---|
| 1810 | }
|
---|
| 1811 |
|
---|
| 1812 | /* Extract :method, :path from request line */
|
---|
| 1813 | line_end = strstr(hdbuf, "\r\n");
|
---|
| 1814 |
|
---|
| 1815 | /* Method does not contain spaces */
|
---|
| 1816 | end = memchr(hdbuf, ' ', line_end - hdbuf);
|
---|
| 1817 | if(!end || end == hdbuf)
|
---|
| 1818 | goto fail;
|
---|
| 1819 | nva[0].name = (unsigned char *)":method";
|
---|
| 1820 | nva[0].namelen = strlen((char *)nva[0].name);
|
---|
| 1821 | nva[0].value = (unsigned char *)hdbuf;
|
---|
| 1822 | nva[0].valuelen = (size_t)(end - hdbuf);
|
---|
| 1823 | nva[0].flags = NGHTTP2_NV_FLAG_NONE;
|
---|
| 1824 | if(HEADER_OVERFLOW(nva[0])) {
|
---|
| 1825 | failf(conn->data, "Failed sending HTTP request: Header overflow");
|
---|
| 1826 | goto fail;
|
---|
| 1827 | }
|
---|
| 1828 |
|
---|
| 1829 | hdbuf = end + 1;
|
---|
| 1830 |
|
---|
| 1831 | /* Path may contain spaces so scan backwards */
|
---|
| 1832 | end = NULL;
|
---|
| 1833 | for(i = (size_t)(line_end - hdbuf); i; --i) {
|
---|
| 1834 | if(hdbuf[i - 1] == ' ') {
|
---|
| 1835 | end = &hdbuf[i - 1];
|
---|
| 1836 | break;
|
---|
| 1837 | }
|
---|
| 1838 | }
|
---|
| 1839 | if(!end || end == hdbuf)
|
---|
| 1840 | goto fail;
|
---|
| 1841 | nva[1].name = (unsigned char *)":path";
|
---|
| 1842 | nva[1].namelen = strlen((char *)nva[1].name);
|
---|
| 1843 | nva[1].value = (unsigned char *)hdbuf;
|
---|
| 1844 | nva[1].valuelen = (size_t)(end - hdbuf);
|
---|
| 1845 | nva[1].flags = NGHTTP2_NV_FLAG_NONE;
|
---|
| 1846 | if(HEADER_OVERFLOW(nva[1])) {
|
---|
| 1847 | failf(conn->data, "Failed sending HTTP request: Header overflow");
|
---|
| 1848 | goto fail;
|
---|
| 1849 | }
|
---|
| 1850 |
|
---|
| 1851 | nva[2].name = (unsigned char *)":scheme";
|
---|
| 1852 | nva[2].namelen = strlen((char *)nva[2].name);
|
---|
| 1853 | if(conn->handler->flags & PROTOPT_SSL)
|
---|
| 1854 | nva[2].value = (unsigned char *)"https";
|
---|
| 1855 | else
|
---|
| 1856 | nva[2].value = (unsigned char *)"http";
|
---|
| 1857 | nva[2].valuelen = strlen((char *)nva[2].value);
|
---|
| 1858 | nva[2].flags = NGHTTP2_NV_FLAG_NONE;
|
---|
| 1859 | if(HEADER_OVERFLOW(nva[2])) {
|
---|
| 1860 | failf(conn->data, "Failed sending HTTP request: Header overflow");
|
---|
| 1861 | goto fail;
|
---|
| 1862 | }
|
---|
| 1863 |
|
---|
| 1864 | authority_idx = 0;
|
---|
| 1865 | i = 3;
|
---|
| 1866 | while(i < nheader) {
|
---|
| 1867 | size_t hlen;
|
---|
| 1868 |
|
---|
| 1869 | hdbuf = line_end + 2;
|
---|
| 1870 |
|
---|
| 1871 | line_end = strstr(hdbuf, "\r\n");
|
---|
| 1872 | if(line_end == hdbuf)
|
---|
| 1873 | goto fail;
|
---|
| 1874 |
|
---|
| 1875 | /* header continuation lines are not supported */
|
---|
| 1876 | if(*hdbuf == ' ' || *hdbuf == '\t')
|
---|
| 1877 | goto fail;
|
---|
| 1878 |
|
---|
| 1879 | for(end = hdbuf; end < line_end && *end != ':'; ++end)
|
---|
| 1880 | ;
|
---|
| 1881 | if(end == hdbuf || end == line_end)
|
---|
| 1882 | goto fail;
|
---|
| 1883 | hlen = end - hdbuf;
|
---|
| 1884 |
|
---|
| 1885 | if(hlen == 4 && strncasecompare("host", hdbuf, 4)) {
|
---|
| 1886 | authority_idx = i;
|
---|
| 1887 | nva[i].name = (unsigned char *)":authority";
|
---|
| 1888 | nva[i].namelen = strlen((char *)nva[i].name);
|
---|
| 1889 | }
|
---|
| 1890 | else {
|
---|
| 1891 | nva[i].name = (unsigned char *)hdbuf;
|
---|
| 1892 | nva[i].namelen = (size_t)(end - hdbuf);
|
---|
| 1893 | }
|
---|
| 1894 | hdbuf = end + 1;
|
---|
| 1895 | while(*hdbuf == ' ' || *hdbuf == '\t')
|
---|
| 1896 | ++hdbuf;
|
---|
| 1897 | end = line_end;
|
---|
| 1898 |
|
---|
| 1899 | switch(inspect_header((const char *)nva[i].name, nva[i].namelen, hdbuf,
|
---|
| 1900 | end - hdbuf)) {
|
---|
| 1901 | case HEADERINST_IGNORE:
|
---|
| 1902 | /* skip header fields prohibited by HTTP/2 specification. */
|
---|
| 1903 | --nheader;
|
---|
| 1904 | continue;
|
---|
| 1905 | case HEADERINST_TE_TRAILERS:
|
---|
| 1906 | nva[i].value = (uint8_t*)"trailers";
|
---|
| 1907 | nva[i].valuelen = sizeof("trailers") - 1;
|
---|
| 1908 | break;
|
---|
| 1909 | default:
|
---|
| 1910 | nva[i].value = (unsigned char *)hdbuf;
|
---|
| 1911 | nva[i].valuelen = (size_t)(end - hdbuf);
|
---|
| 1912 | }
|
---|
| 1913 |
|
---|
| 1914 | nva[i].flags = NGHTTP2_NV_FLAG_NONE;
|
---|
| 1915 | if(HEADER_OVERFLOW(nva[i])) {
|
---|
| 1916 | failf(conn->data, "Failed sending HTTP request: Header overflow");
|
---|
| 1917 | goto fail;
|
---|
| 1918 | }
|
---|
| 1919 | ++i;
|
---|
| 1920 | }
|
---|
| 1921 |
|
---|
| 1922 | /* :authority must come before non-pseudo header fields */
|
---|
| 1923 | if(authority_idx != 0 && authority_idx != AUTHORITY_DST_IDX) {
|
---|
| 1924 | nghttp2_nv authority = nva[authority_idx];
|
---|
| 1925 | for(i = authority_idx; i > AUTHORITY_DST_IDX; --i) {
|
---|
| 1926 | nva[i] = nva[i - 1];
|
---|
| 1927 | }
|
---|
| 1928 | nva[i] = authority;
|
---|
| 1929 | }
|
---|
| 1930 |
|
---|
| 1931 | /* Warn stream may be rejected if cumulative length of headers is too large.
|
---|
| 1932 | It appears nghttp2 will not send a header frame larger than 64KB. */
|
---|
| 1933 | #define MAX_ACC 60000 /* <64KB to account for some overhead */
|
---|
| 1934 | {
|
---|
| 1935 | size_t acc = 0;
|
---|
| 1936 |
|
---|
| 1937 | for(i = 0; i < nheader; ++i) {
|
---|
| 1938 | acc += nva[i].namelen + nva[i].valuelen;
|
---|
| 1939 |
|
---|
| 1940 | DEBUGF(infof(conn->data, "h2 header: %.*s:%.*s\n",
|
---|
| 1941 | nva[i].namelen, nva[i].name,
|
---|
| 1942 | nva[i].valuelen, nva[i].value));
|
---|
| 1943 | }
|
---|
| 1944 |
|
---|
| 1945 | if(acc > MAX_ACC) {
|
---|
| 1946 | infof(conn->data, "http2_send: Warning: The cumulative length of all "
|
---|
| 1947 | "headers exceeds %zu bytes and that could cause the "
|
---|
| 1948 | "stream to be rejected.\n", MAX_ACC);
|
---|
| 1949 | }
|
---|
| 1950 | }
|
---|
| 1951 |
|
---|
| 1952 | h2_pri_spec(conn->data, &pri_spec);
|
---|
| 1953 |
|
---|
| 1954 | switch(conn->data->set.httpreq) {
|
---|
| 1955 | case HTTPREQ_POST:
|
---|
| 1956 | case HTTPREQ_POST_FORM:
|
---|
| 1957 | case HTTPREQ_POST_MIME:
|
---|
| 1958 | case HTTPREQ_PUT:
|
---|
| 1959 | if(conn->data->state.infilesize != -1)
|
---|
| 1960 | stream->upload_left = conn->data->state.infilesize;
|
---|
| 1961 | else
|
---|
| 1962 | /* data sending without specifying the data amount up front */
|
---|
| 1963 | stream->upload_left = -1; /* unknown, but not zero */
|
---|
| 1964 |
|
---|
| 1965 | data_prd.read_callback = data_source_read_callback;
|
---|
| 1966 | data_prd.source.ptr = NULL;
|
---|
| 1967 | stream_id = nghttp2_submit_request(h2, &pri_spec, nva, nheader,
|
---|
| 1968 | &data_prd, conn->data);
|
---|
| 1969 | break;
|
---|
| 1970 | default:
|
---|
| 1971 | stream_id = nghttp2_submit_request(h2, &pri_spec, nva, nheader,
|
---|
| 1972 | NULL, conn->data);
|
---|
| 1973 | }
|
---|
| 1974 |
|
---|
| 1975 | Curl_safefree(nva);
|
---|
| 1976 |
|
---|
| 1977 | if(stream_id < 0) {
|
---|
| 1978 | DEBUGF(infof(conn->data, "http2_send() send error\n"));
|
---|
| 1979 | *err = CURLE_SEND_ERROR;
|
---|
| 1980 | return -1;
|
---|
| 1981 | }
|
---|
| 1982 |
|
---|
| 1983 | infof(conn->data, "Using Stream ID: %x (easy handle %p)\n",
|
---|
| 1984 | stream_id, conn->data);
|
---|
| 1985 | stream->stream_id = stream_id;
|
---|
| 1986 |
|
---|
| 1987 | /* this does not call h2_session_send() since there can not have been any
|
---|
| 1988 | * priority upodate since the nghttp2_submit_request() call above */
|
---|
| 1989 | rv = nghttp2_session_send(h2);
|
---|
| 1990 |
|
---|
| 1991 | if(rv != 0) {
|
---|
| 1992 | *err = CURLE_SEND_ERROR;
|
---|
| 1993 | return -1;
|
---|
| 1994 | }
|
---|
| 1995 |
|
---|
| 1996 | if(should_close_session(httpc)) {
|
---|
| 1997 | DEBUGF(infof(conn->data, "http2_send: nothing to do in this session\n"));
|
---|
| 1998 | *err = CURLE_HTTP2;
|
---|
| 1999 | return -1;
|
---|
| 2000 | }
|
---|
| 2001 |
|
---|
| 2002 | if(stream->stream_id != -1) {
|
---|
| 2003 | /* If whole HEADERS frame was sent off to the underlying socket,
|
---|
| 2004 | the nghttp2 library calls data_source_read_callback. But only
|
---|
| 2005 | it found that no data available, so it deferred the DATA
|
---|
| 2006 | transmission. Which means that nghttp2_session_want_write()
|
---|
| 2007 | returns 0 on http2_perform_getsock(), which results that no
|
---|
| 2008 | writable socket check is performed. To workaround this, we
|
---|
| 2009 | issue nghttp2_session_resume_data() here to bring back DATA
|
---|
| 2010 | transmission from deferred state. */
|
---|
| 2011 | nghttp2_session_resume_data(h2, stream->stream_id);
|
---|
| 2012 | }
|
---|
| 2013 |
|
---|
| 2014 | return len;
|
---|
| 2015 |
|
---|
| 2016 | fail:
|
---|
| 2017 | free(nva);
|
---|
| 2018 | *err = CURLE_SEND_ERROR;
|
---|
| 2019 | return -1;
|
---|
| 2020 | }
|
---|
| 2021 |
|
---|
| 2022 | CURLcode Curl_http2_setup(struct connectdata *conn)
|
---|
| 2023 | {
|
---|
| 2024 | CURLcode result;
|
---|
| 2025 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
| 2026 | struct HTTP *stream = conn->data->req.protop;
|
---|
| 2027 |
|
---|
| 2028 | stream->stream_id = -1;
|
---|
| 2029 |
|
---|
| 2030 | if(!stream->header_recvbuf)
|
---|
| 2031 | stream->header_recvbuf = Curl_add_buffer_init();
|
---|
| 2032 |
|
---|
| 2033 | if((conn->handler == &Curl_handler_http2_ssl) ||
|
---|
| 2034 | (conn->handler == &Curl_handler_http2))
|
---|
| 2035 | return CURLE_OK; /* already done */
|
---|
| 2036 |
|
---|
| 2037 | if(conn->handler->flags & PROTOPT_SSL)
|
---|
| 2038 | conn->handler = &Curl_handler_http2_ssl;
|
---|
| 2039 | else
|
---|
| 2040 | conn->handler = &Curl_handler_http2;
|
---|
| 2041 |
|
---|
| 2042 | result = Curl_http2_init(conn);
|
---|
| 2043 | if(result)
|
---|
| 2044 | return result;
|
---|
| 2045 |
|
---|
| 2046 | infof(conn->data, "Using HTTP2, server supports multi-use\n");
|
---|
| 2047 | stream->upload_left = 0;
|
---|
| 2048 | stream->upload_mem = NULL;
|
---|
| 2049 | stream->upload_len = 0;
|
---|
| 2050 |
|
---|
| 2051 | httpc->inbuflen = 0;
|
---|
| 2052 | httpc->nread_inbuf = 0;
|
---|
| 2053 |
|
---|
| 2054 | httpc->pause_stream_id = 0;
|
---|
| 2055 | httpc->drain_total = 0;
|
---|
| 2056 |
|
---|
| 2057 | conn->bits.multiplex = TRUE; /* at least potentially multiplexed */
|
---|
| 2058 | conn->httpversion = 20;
|
---|
| 2059 | conn->bundle->multiuse = BUNDLE_MULTIPLEX;
|
---|
| 2060 |
|
---|
| 2061 | infof(conn->data, "Connection state changed (HTTP/2 confirmed)\n");
|
---|
| 2062 | Curl_multi_connchanged(conn->data->multi);
|
---|
| 2063 |
|
---|
| 2064 | return CURLE_OK;
|
---|
| 2065 | }
|
---|
| 2066 |
|
---|
| 2067 | CURLcode Curl_http2_switched(struct connectdata *conn,
|
---|
| 2068 | const char *mem, size_t nread)
|
---|
| 2069 | {
|
---|
| 2070 | CURLcode result;
|
---|
| 2071 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
| 2072 | int rv;
|
---|
| 2073 | ssize_t nproc;
|
---|
| 2074 | struct Curl_easy *data = conn->data;
|
---|
| 2075 | struct HTTP *stream = conn->data->req.protop;
|
---|
| 2076 |
|
---|
| 2077 | result = Curl_http2_setup(conn);
|
---|
| 2078 | if(result)
|
---|
| 2079 | return result;
|
---|
| 2080 |
|
---|
| 2081 | httpc->recv_underlying = (recving)conn->recv[FIRSTSOCKET];
|
---|
| 2082 | httpc->send_underlying = (sending)conn->send[FIRSTSOCKET];
|
---|
| 2083 | conn->recv[FIRSTSOCKET] = http2_recv;
|
---|
| 2084 | conn->send[FIRSTSOCKET] = http2_send;
|
---|
| 2085 |
|
---|
| 2086 | if(conn->data->req.upgr101 == UPGR101_RECEIVED) {
|
---|
| 2087 | /* stream 1 is opened implicitly on upgrade */
|
---|
| 2088 | stream->stream_id = 1;
|
---|
| 2089 | /* queue SETTINGS frame (again) */
|
---|
| 2090 | rv = nghttp2_session_upgrade(httpc->h2, httpc->binsettings,
|
---|
| 2091 | httpc->binlen, NULL);
|
---|
| 2092 | if(rv != 0) {
|
---|
| 2093 | failf(data, "nghttp2_session_upgrade() failed: %s(%d)",
|
---|
| 2094 | nghttp2_strerror(rv), rv);
|
---|
| 2095 | return CURLE_HTTP2;
|
---|
| 2096 | }
|
---|
| 2097 |
|
---|
| 2098 | nghttp2_session_set_stream_user_data(httpc->h2,
|
---|
| 2099 | stream->stream_id,
|
---|
| 2100 | conn->data);
|
---|
| 2101 | }
|
---|
| 2102 | else {
|
---|
| 2103 | populate_settings(conn, httpc);
|
---|
| 2104 |
|
---|
| 2105 | /* stream ID is unknown at this point */
|
---|
| 2106 | stream->stream_id = -1;
|
---|
| 2107 | rv = nghttp2_submit_settings(httpc->h2, NGHTTP2_FLAG_NONE,
|
---|
| 2108 | httpc->local_settings,
|
---|
| 2109 | httpc->local_settings_num);
|
---|
| 2110 | if(rv != 0) {
|
---|
| 2111 | failf(data, "nghttp2_submit_settings() failed: %s(%d)",
|
---|
| 2112 | nghttp2_strerror(rv), rv);
|
---|
| 2113 | return CURLE_HTTP2;
|
---|
| 2114 | }
|
---|
| 2115 | }
|
---|
| 2116 |
|
---|
| 2117 | #ifdef NGHTTP2_HAS_SET_LOCAL_WINDOW_SIZE
|
---|
| 2118 | rv = nghttp2_session_set_local_window_size(httpc->h2, NGHTTP2_FLAG_NONE, 0,
|
---|
| 2119 | HTTP2_HUGE_WINDOW_SIZE);
|
---|
| 2120 | if(rv != 0) {
|
---|
| 2121 | failf(data, "nghttp2_session_set_local_window_size() failed: %s(%d)",
|
---|
| 2122 | nghttp2_strerror(rv), rv);
|
---|
| 2123 | return CURLE_HTTP2;
|
---|
| 2124 | }
|
---|
| 2125 | #endif
|
---|
| 2126 |
|
---|
| 2127 | /* we are going to copy mem to httpc->inbuf. This is required since
|
---|
| 2128 | mem is part of buffer pointed by stream->mem, and callbacks
|
---|
| 2129 | called by nghttp2_session_mem_recv() will write stream specific
|
---|
| 2130 | data into stream->mem, overwriting data already there. */
|
---|
| 2131 | if(H2_BUFSIZE < nread) {
|
---|
| 2132 | failf(data, "connection buffer size is too small to store data following "
|
---|
| 2133 | "HTTP Upgrade response header: buflen=%zu, datalen=%zu",
|
---|
| 2134 | H2_BUFSIZE, nread);
|
---|
| 2135 | return CURLE_HTTP2;
|
---|
| 2136 | }
|
---|
| 2137 |
|
---|
| 2138 | infof(conn->data, "Copying HTTP/2 data in stream buffer to connection buffer"
|
---|
| 2139 | " after upgrade: len=%zu\n",
|
---|
| 2140 | nread);
|
---|
| 2141 |
|
---|
| 2142 | if(nread)
|
---|
| 2143 | memcpy(httpc->inbuf, mem, nread);
|
---|
| 2144 | httpc->inbuflen = nread;
|
---|
| 2145 |
|
---|
| 2146 | nproc = nghttp2_session_mem_recv(httpc->h2, (const uint8_t *)httpc->inbuf,
|
---|
| 2147 | httpc->inbuflen);
|
---|
| 2148 |
|
---|
| 2149 | if(nghttp2_is_fatal((int)nproc)) {
|
---|
| 2150 | failf(data, "nghttp2_session_mem_recv() failed: %s(%d)",
|
---|
| 2151 | nghttp2_strerror((int)nproc), (int)nproc);
|
---|
| 2152 | return CURLE_HTTP2;
|
---|
| 2153 | }
|
---|
| 2154 |
|
---|
| 2155 | DEBUGF(infof(data, "nghttp2_session_mem_recv() returns %zd\n", nproc));
|
---|
| 2156 |
|
---|
| 2157 | if((ssize_t)nread == nproc) {
|
---|
| 2158 | httpc->inbuflen = 0;
|
---|
| 2159 | httpc->nread_inbuf = 0;
|
---|
| 2160 | }
|
---|
| 2161 | else {
|
---|
| 2162 | httpc->nread_inbuf += nproc;
|
---|
| 2163 | }
|
---|
| 2164 |
|
---|
| 2165 | /* Try to send some frames since we may read SETTINGS already. */
|
---|
| 2166 | rv = h2_session_send(data, httpc->h2);
|
---|
| 2167 |
|
---|
| 2168 | if(rv != 0) {
|
---|
| 2169 | failf(data, "nghttp2_session_send() failed: %s(%d)",
|
---|
| 2170 | nghttp2_strerror(rv), rv);
|
---|
| 2171 | return CURLE_HTTP2;
|
---|
| 2172 | }
|
---|
| 2173 |
|
---|
| 2174 | if(should_close_session(httpc)) {
|
---|
| 2175 | DEBUGF(infof(data,
|
---|
| 2176 | "nghttp2_session_send(): nothing to do in this session\n"));
|
---|
| 2177 | return CURLE_HTTP2;
|
---|
| 2178 | }
|
---|
| 2179 |
|
---|
| 2180 | return CURLE_OK;
|
---|
| 2181 | }
|
---|
| 2182 |
|
---|
| 2183 | CURLcode Curl_http2_add_child(struct Curl_easy *parent,
|
---|
| 2184 | struct Curl_easy *child,
|
---|
| 2185 | bool exclusive)
|
---|
| 2186 | {
|
---|
| 2187 | if(parent) {
|
---|
| 2188 | struct Curl_http2_dep **tail;
|
---|
| 2189 | struct Curl_http2_dep *dep = calloc(1, sizeof(struct Curl_http2_dep));
|
---|
| 2190 | if(!dep)
|
---|
| 2191 | return CURLE_OUT_OF_MEMORY;
|
---|
| 2192 | dep->data = child;
|
---|
| 2193 |
|
---|
| 2194 | if(parent->set.stream_dependents && exclusive) {
|
---|
| 2195 | struct Curl_http2_dep *node = parent->set.stream_dependents;
|
---|
| 2196 | while(node) {
|
---|
| 2197 | node->data->set.stream_depends_on = child;
|
---|
| 2198 | node = node->next;
|
---|
| 2199 | }
|
---|
| 2200 |
|
---|
| 2201 | tail = &child->set.stream_dependents;
|
---|
| 2202 | while(*tail)
|
---|
| 2203 | tail = &(*tail)->next;
|
---|
| 2204 |
|
---|
| 2205 | DEBUGASSERT(!*tail);
|
---|
| 2206 | *tail = parent->set.stream_dependents;
|
---|
| 2207 | parent->set.stream_dependents = 0;
|
---|
| 2208 | }
|
---|
| 2209 |
|
---|
| 2210 | tail = &parent->set.stream_dependents;
|
---|
| 2211 | while(*tail) {
|
---|
| 2212 | (*tail)->data->set.stream_depends_e = FALSE;
|
---|
| 2213 | tail = &(*tail)->next;
|
---|
| 2214 | }
|
---|
| 2215 |
|
---|
| 2216 | DEBUGASSERT(!*tail);
|
---|
| 2217 | *tail = dep;
|
---|
| 2218 | }
|
---|
| 2219 |
|
---|
| 2220 | child->set.stream_depends_on = parent;
|
---|
| 2221 | child->set.stream_depends_e = exclusive;
|
---|
| 2222 | return CURLE_OK;
|
---|
| 2223 | }
|
---|
| 2224 |
|
---|
| 2225 | void Curl_http2_remove_child(struct Curl_easy *parent, struct Curl_easy *child)
|
---|
| 2226 | {
|
---|
| 2227 | struct Curl_http2_dep *last = 0;
|
---|
| 2228 | struct Curl_http2_dep *data = parent->set.stream_dependents;
|
---|
| 2229 | DEBUGASSERT(child->set.stream_depends_on == parent);
|
---|
| 2230 |
|
---|
| 2231 | while(data && data->data != child) {
|
---|
| 2232 | last = data;
|
---|
| 2233 | data = data->next;
|
---|
| 2234 | }
|
---|
| 2235 |
|
---|
| 2236 | DEBUGASSERT(data);
|
---|
| 2237 |
|
---|
| 2238 | if(data) {
|
---|
| 2239 | if(last) {
|
---|
| 2240 | last->next = data->next;
|
---|
| 2241 | }
|
---|
| 2242 | else {
|
---|
| 2243 | parent->set.stream_dependents = data->next;
|
---|
| 2244 | }
|
---|
| 2245 | free(data);
|
---|
| 2246 | }
|
---|
| 2247 |
|
---|
| 2248 | child->set.stream_depends_on = 0;
|
---|
| 2249 | child->set.stream_depends_e = FALSE;
|
---|
| 2250 | }
|
---|
| 2251 |
|
---|
| 2252 | void Curl_http2_cleanup_dependencies(struct Curl_easy *data)
|
---|
| 2253 | {
|
---|
| 2254 | while(data->set.stream_dependents) {
|
---|
| 2255 | struct Curl_easy *tmp = data->set.stream_dependents->data;
|
---|
| 2256 | Curl_http2_remove_child(data, tmp);
|
---|
| 2257 | if(data->set.stream_depends_on)
|
---|
| 2258 | Curl_http2_add_child(data->set.stream_depends_on, tmp, FALSE);
|
---|
| 2259 | }
|
---|
| 2260 |
|
---|
| 2261 | if(data->set.stream_depends_on)
|
---|
| 2262 | Curl_http2_remove_child(data->set.stream_depends_on, data);
|
---|
| 2263 | }
|
---|
| 2264 |
|
---|
| 2265 | #else /* !USE_NGHTTP2 */
|
---|
| 2266 |
|
---|
| 2267 | /* Satisfy external references even if http2 is not compiled in. */
|
---|
| 2268 |
|
---|
| 2269 | #define CURL_DISABLE_TYPECHECK
|
---|
| 2270 | #include <curl/curl.h>
|
---|
| 2271 |
|
---|
| 2272 | char *curl_pushheader_bynum(struct curl_pushheaders *h, size_t num)
|
---|
| 2273 | {
|
---|
| 2274 | (void) h;
|
---|
| 2275 | (void) num;
|
---|
| 2276 | return NULL;
|
---|
| 2277 | }
|
---|
| 2278 |
|
---|
| 2279 | char *curl_pushheader_byname(struct curl_pushheaders *h, const char *header)
|
---|
| 2280 | {
|
---|
| 2281 | (void) h;
|
---|
| 2282 | (void) header;
|
---|
| 2283 | return NULL;
|
---|
| 2284 | }
|
---|
| 2285 |
|
---|
| 2286 | #endif /* USE_NGHTTP2 */
|
---|