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 - 2016, 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 "curl_printf.h"
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27 | #include <nghttp2/nghttp2.h>
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28 | #include "urldata.h"
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29 | #include "http2.h"
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30 | #include "http.h"
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31 | #include "sendf.h"
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32 | #include "curl_base64.h"
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33 | #include "rawstr.h"
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34 | #include "multiif.h"
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35 | #include "conncache.h"
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36 | #include "url.h"
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37 | #include "connect.h"
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38 |
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39 | /* The last #include files should be: */
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40 | #include "curl_memory.h"
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41 | #include "memdebug.h"
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42 |
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43 | #define MIN(x,y) ((x)<(y)?(x):(y))
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44 |
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45 | #if (NGHTTP2_VERSION_NUM < 0x010000)
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46 | #error too old nghttp2 version, upgrade!
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47 | #endif
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48 |
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49 | /*
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50 | * Curl_http2_init_state() is called when the easy handle is created and
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51 | * allows for HTTP/2 specific init of state.
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52 | */
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53 | void Curl_http2_init_state(struct UrlState *state)
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54 | {
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55 | state->stream_weight = NGHTTP2_DEFAULT_WEIGHT;
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56 | }
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57 |
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58 | /*
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59 | * Curl_http2_init_userset() is called when the easy handle is created and
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60 | * allows for HTTP/2 specific user-set fields.
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61 | */
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62 | void Curl_http2_init_userset(struct UserDefined *set)
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63 | {
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64 | set->stream_weight = NGHTTP2_DEFAULT_WEIGHT;
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65 | }
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66 |
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67 | static int http2_perform_getsock(const struct connectdata *conn,
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68 | curl_socket_t *sock, /* points to
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69 | numsocks
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70 | number of
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71 | sockets */
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72 | int numsocks)
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73 | {
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74 | const struct http_conn *c = &conn->proto.httpc;
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75 | int bitmap = GETSOCK_BLANK;
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76 | (void)numsocks;
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77 |
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78 | /* TODO We should check underlying socket state if it is SSL socket
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79 | because of renegotiation. */
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80 | sock[0] = conn->sock[FIRSTSOCKET];
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81 |
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82 | if(nghttp2_session_want_read(c->h2))
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83 | bitmap |= GETSOCK_READSOCK(FIRSTSOCKET);
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84 |
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85 | if(nghttp2_session_want_write(c->h2))
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86 | bitmap |= GETSOCK_WRITESOCK(FIRSTSOCKET);
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87 |
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88 | return bitmap;
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89 | }
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90 |
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91 | static int http2_getsock(struct connectdata *conn,
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92 | curl_socket_t *sock, /* points to numsocks
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93 | number of sockets */
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94 | int numsocks)
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95 | {
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96 | return http2_perform_getsock(conn, sock, numsocks);
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97 | }
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98 |
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99 | static CURLcode http2_disconnect(struct connectdata *conn,
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100 | bool dead_connection)
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101 | {
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102 | struct HTTP *http = conn->data->req.protop;
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103 | struct http_conn *c = &conn->proto.httpc;
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104 | (void)dead_connection;
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105 |
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106 | DEBUGF(infof(conn->data, "HTTP/2 DISCONNECT starts now\n"));
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107 |
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108 | nghttp2_session_del(c->h2);
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109 | Curl_safefree(c->inbuf);
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110 |
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111 | if(http) {
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112 | Curl_add_buffer_free(http->header_recvbuf);
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113 | http->header_recvbuf = NULL; /* clear the pointer */
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114 | Curl_add_buffer_free(http->trailer_recvbuf);
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115 | http->trailer_recvbuf = NULL; /* clear the pointer */
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116 | for(; http->push_headers_used > 0; --http->push_headers_used) {
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117 | free(http->push_headers[http->push_headers_used - 1]);
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118 | }
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119 | free(http->push_headers);
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120 | http->push_headers = NULL;
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121 | }
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122 |
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123 | DEBUGF(infof(conn->data, "HTTP/2 DISCONNECT done\n"));
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124 |
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125 | return CURLE_OK;
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126 | }
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127 |
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128 | /* called from Curl_http_setup_conn */
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129 | void Curl_http2_setup_req(struct SessionHandle *data)
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130 | {
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131 | struct HTTP *http = data->req.protop;
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132 |
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133 | http->nread_header_recvbuf = 0;
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134 | http->bodystarted = FALSE;
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135 | http->status_code = -1;
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136 | http->pausedata = NULL;
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137 | http->pauselen = 0;
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138 | http->error_code = NGHTTP2_NO_ERROR;
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139 | http->closed = FALSE;
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140 | http->mem = data->state.buffer;
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141 | http->len = BUFSIZE;
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142 | http->memlen = 0;
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143 | }
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144 |
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145 | /* called from Curl_http_setup_conn */
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146 | void Curl_http2_setup_conn(struct connectdata *conn)
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147 | {
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148 | conn->proto.httpc.settings.max_concurrent_streams =
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149 | DEFAULT_MAX_CONCURRENT_STREAMS;
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150 | }
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151 |
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152 | /*
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153 | * HTTP2 handler interface. This isn't added to the general list of protocols
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154 | * but will be used at run-time when the protocol is dynamically switched from
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155 | * HTTP to HTTP2.
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156 | */
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157 | const struct Curl_handler Curl_handler_http2 = {
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158 | "HTTP2", /* scheme */
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159 | ZERO_NULL, /* setup_connection */
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160 | Curl_http, /* do_it */
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161 | Curl_http_done, /* done */
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162 | ZERO_NULL, /* do_more */
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163 | ZERO_NULL, /* connect_it */
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164 | ZERO_NULL, /* connecting */
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165 | ZERO_NULL, /* doing */
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166 | http2_getsock, /* proto_getsock */
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167 | http2_getsock, /* doing_getsock */
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168 | ZERO_NULL, /* domore_getsock */
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169 | http2_perform_getsock, /* perform_getsock */
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170 | http2_disconnect, /* disconnect */
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171 | ZERO_NULL, /* readwrite */
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172 | PORT_HTTP, /* defport */
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173 | CURLPROTO_HTTP, /* protocol */
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174 | PROTOPT_NONE /* flags */
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175 | };
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176 |
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177 | const struct Curl_handler Curl_handler_http2_ssl = {
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178 | "HTTP2", /* scheme */
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179 | ZERO_NULL, /* setup_connection */
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180 | Curl_http, /* do_it */
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181 | Curl_http_done, /* done */
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182 | ZERO_NULL, /* do_more */
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183 | ZERO_NULL, /* connect_it */
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184 | ZERO_NULL, /* connecting */
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185 | ZERO_NULL, /* doing */
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186 | http2_getsock, /* proto_getsock */
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187 | http2_getsock, /* doing_getsock */
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188 | ZERO_NULL, /* domore_getsock */
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189 | http2_perform_getsock, /* perform_getsock */
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190 | http2_disconnect, /* disconnect */
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191 | ZERO_NULL, /* readwrite */
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192 | PORT_HTTP, /* defport */
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193 | CURLPROTO_HTTPS, /* protocol */
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194 | PROTOPT_SSL /* flags */
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195 | };
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196 |
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197 | /*
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198 | * Store nghttp2 version info in this buffer, Prefix with a space. Return
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199 | * total length written.
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200 | */
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201 | int Curl_http2_ver(char *p, size_t len)
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202 | {
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203 | nghttp2_info *h2 = nghttp2_version(0);
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204 | return snprintf(p, len, " nghttp2/%s", h2->version_str);
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205 | }
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206 |
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207 | /*
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208 | * The implementation of nghttp2_send_callback type. Here we write |data| with
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209 | * size |length| to the network and return the number of bytes actually
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210 | * written. See the documentation of nghttp2_send_callback for the details.
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211 | */
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212 | static ssize_t send_callback(nghttp2_session *h2,
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213 | const uint8_t *data, size_t length, int flags,
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214 | void *userp)
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215 | {
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216 | struct connectdata *conn = (struct connectdata *)userp;
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217 | struct http_conn *c = &conn->proto.httpc;
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218 | ssize_t written;
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219 | CURLcode result = CURLE_OK;
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220 |
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221 | (void)h2;
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222 | (void)flags;
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223 |
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224 | written = ((Curl_send*)c->send_underlying)(conn, FIRSTSOCKET,
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225 | data, length, &result);
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226 |
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227 | if(result == CURLE_AGAIN) {
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228 | return NGHTTP2_ERR_WOULDBLOCK;
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229 | }
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230 |
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231 | if(written == -1) {
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232 | failf(conn->data, "Failed sending HTTP2 data");
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233 | return NGHTTP2_ERR_CALLBACK_FAILURE;
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234 | }
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235 |
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236 | if(!written)
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237 | return NGHTTP2_ERR_WOULDBLOCK;
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238 |
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239 | return written;
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240 | }
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241 |
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242 |
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243 | /* We pass a pointer to this struct in the push callback, but the contents of
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244 | the struct are hidden from the user. */
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245 | struct curl_pushheaders {
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246 | struct SessionHandle *data;
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247 | const nghttp2_push_promise *frame;
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248 | };
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249 |
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250 | /*
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251 | * push header access function. Only to be used from within the push callback
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252 | */
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253 | char *curl_pushheader_bynum(struct curl_pushheaders *h, size_t num)
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254 | {
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255 | /* Verify that we got a good easy handle in the push header struct, mostly to
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256 | detect rubbish input fast(er). */
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257 | if(!h || !GOOD_EASY_HANDLE(h->data))
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258 | return NULL;
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259 | else {
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260 | struct HTTP *stream = h->data->req.protop;
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261 | if(num < stream->push_headers_used)
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262 | return stream->push_headers[num];
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263 | }
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264 | return NULL;
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265 | }
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266 |
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267 | /*
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268 | * push header access function. Only to be used from within the push callback
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269 | */
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270 | char *curl_pushheader_byname(struct curl_pushheaders *h, const char *header)
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271 | {
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272 | /* Verify that we got a good easy handle in the push header struct,
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273 | mostly to detect rubbish input fast(er). Also empty header name
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274 | is just a rubbish too. We have to allow ":" at the beginning of
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275 | the header, but header == ":" must be rejected. If we have ':' in
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276 | the middle of header, it could be matched in middle of the value,
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277 | this is because we do prefix match.*/
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278 | if(!h || !GOOD_EASY_HANDLE(h->data) || !header || !header[0] ||
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279 | Curl_raw_equal(header, ":") || strchr(header + 1, ':'))
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280 | return NULL;
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281 | else {
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282 | struct HTTP *stream = h->data->req.protop;
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283 | size_t len = strlen(header);
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284 | size_t i;
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285 | for(i=0; i<stream->push_headers_used; i++) {
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286 | if(!strncmp(header, stream->push_headers[i], len)) {
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287 | /* sub-match, make sure that it is followed by a colon */
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288 | if(stream->push_headers[i][len] != ':')
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289 | continue;
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290 | return &stream->push_headers[i][len+1];
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291 | }
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292 | }
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293 | }
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294 | return NULL;
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295 | }
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296 |
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297 | static CURL *duphandle(struct SessionHandle *data)
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298 | {
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299 | struct SessionHandle *second = curl_easy_duphandle(data);
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300 | if(second) {
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301 | /* setup the request struct */
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302 | struct HTTP *http = calloc(1, sizeof(struct HTTP));
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303 | if(!http) {
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304 | (void)Curl_close(second);
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305 | second = NULL;
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306 | }
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307 | else {
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308 | second->req.protop = http;
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309 | http->header_recvbuf = Curl_add_buffer_init();
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310 | if(!http->header_recvbuf) {
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311 | free(http);
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312 | (void)Curl_close(second);
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313 | second = NULL;
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314 | }
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315 | else {
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316 | Curl_http2_setup_req(second);
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317 | second->state.stream_weight = data->state.stream_weight;
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318 | }
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319 | }
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320 | }
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321 | return second;
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322 | }
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323 |
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324 |
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325 | static int push_promise(struct SessionHandle *data,
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326 | struct connectdata *conn,
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327 | const nghttp2_push_promise *frame)
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328 | {
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329 | int rv;
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330 | DEBUGF(infof(data, "PUSH_PROMISE received, stream %u!\n",
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331 | frame->promised_stream_id));
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332 | if(data->multi->push_cb) {
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333 | struct HTTP *stream;
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334 | struct HTTP *newstream;
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335 | struct curl_pushheaders heads;
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336 | CURLMcode rc;
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337 | struct http_conn *httpc;
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338 | size_t i;
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339 | /* clone the parent */
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340 | struct SessionHandle *newhandle = duphandle(data);
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341 | if(!newhandle) {
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342 | infof(data, "failed to duplicate handle\n");
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343 | rv = 1; /* FAIL HARD */
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344 | goto fail;
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345 | }
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346 |
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347 | heads.data = data;
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348 | heads.frame = frame;
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349 | /* ask the application */
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350 | DEBUGF(infof(data, "Got PUSH_PROMISE, ask application!\n"));
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351 |
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352 | stream = data->req.protop;
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353 | if(!stream) {
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354 | failf(data, "Internal NULL stream!\n");
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355 | rv = 1;
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356 | goto fail;
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357 | }
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358 |
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359 | rv = data->multi->push_cb(data, newhandle,
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360 | stream->push_headers_used, &heads,
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361 | data->multi->push_userp);
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362 |
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363 | /* free the headers again */
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364 | for(i=0; i<stream->push_headers_used; i++)
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365 | free(stream->push_headers[i]);
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366 | free(stream->push_headers);
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367 | stream->push_headers = NULL;
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368 |
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369 | if(rv) {
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370 | /* denied, kill off the new handle again */
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371 | (void)Curl_close(newhandle);
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372 | goto fail;
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373 | }
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374 |
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375 | newstream = newhandle->req.protop;
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376 | newstream->stream_id = frame->promised_stream_id;
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377 | newhandle->req.maxdownload = -1;
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378 | newhandle->req.size = -1;
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379 |
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380 | /* approved, add to the multi handle and immediately switch to PERFORM
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381 | state with the given connection !*/
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382 | rc = Curl_multi_add_perform(data->multi, newhandle, conn);
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383 | if(rc) {
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384 | infof(data, "failed to add handle to multi\n");
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385 | Curl_close(newhandle);
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386 | rv = 1;
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387 | goto fail;
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388 | }
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389 |
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390 | httpc = &conn->proto.httpc;
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391 | nghttp2_session_set_stream_user_data(httpc->h2,
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392 | frame->promised_stream_id, newhandle);
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393 | }
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394 | else {
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395 | DEBUGF(infof(data, "Got PUSH_PROMISE, ignore it!\n"));
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396 | rv = 1;
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397 | }
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398 | fail:
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399 | return rv;
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400 | }
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401 |
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402 | static int on_frame_recv(nghttp2_session *session, const nghttp2_frame *frame,
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403 | void *userp)
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404 | {
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405 | struct connectdata *conn = (struct connectdata *)userp;
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406 | struct http_conn *httpc = &conn->proto.httpc;
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407 | struct SessionHandle *data_s = NULL;
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408 | struct HTTP *stream = NULL;
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409 | static int lastStream = -1;
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410 | int rv;
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411 | size_t left, ncopy;
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412 | int32_t stream_id = frame->hd.stream_id;
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413 |
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414 | if(!stream_id) {
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415 | /* stream ID zero is for connection-oriented stuff */
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416 | if(frame->hd.type == NGHTTP2_SETTINGS) {
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417 | uint32_t max_conn = httpc->settings.max_concurrent_streams;
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418 | DEBUGF(infof(conn->data, "Got SETTINGS\n"));
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419 | httpc->settings.max_concurrent_streams =
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420 | nghttp2_session_get_remote_settings(
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421 | session, NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS);
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422 | httpc->settings.enable_push =
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423 | nghttp2_session_get_remote_settings(
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424 | session, NGHTTP2_SETTINGS_ENABLE_PUSH);
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425 | DEBUGF(infof(conn->data, "MAX_CONCURRENT_STREAMS == %d\n",
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426 | httpc->settings.max_concurrent_streams));
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427 | DEBUGF(infof(conn->data, "ENABLE_PUSH == %s\n",
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428 | httpc->settings.enable_push?"TRUE":"false"));
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429 | if(max_conn != httpc->settings.max_concurrent_streams) {
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430 | /* only signal change if the value actually changed */
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431 | infof(conn->data,
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432 | "Connection state changed (MAX_CONCURRENT_STREAMS updated)!\n");
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433 | Curl_multi_connchanged(conn->data->multi);
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434 | }
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435 | }
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436 | return 0;
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437 | }
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438 | data_s = nghttp2_session_get_stream_user_data(session, stream_id);
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439 | if(lastStream != stream_id) {
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440 | lastStream = stream_id;
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441 | }
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442 | if(!data_s) {
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443 | DEBUGF(infof(conn->data,
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444 | "No SessionHandle associated with stream: %x\n",
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445 | stream_id));
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446 | return 0;
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447 | }
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448 |
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449 | stream = data_s->req.protop;
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450 | if(!stream)
|
---|
451 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
452 |
|
---|
453 | DEBUGF(infof(data_s, "on_frame_recv() header %x stream %x\n",
|
---|
454 | frame->hd.type, stream_id));
|
---|
455 |
|
---|
456 | switch(frame->hd.type) {
|
---|
457 | case NGHTTP2_DATA:
|
---|
458 | /* If body started on this stream, then receiving DATA is illegal. */
|
---|
459 | if(!stream->bodystarted) {
|
---|
460 | rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
|
---|
461 | stream_id, NGHTTP2_PROTOCOL_ERROR);
|
---|
462 |
|
---|
463 | if(nghttp2_is_fatal(rv)) {
|
---|
464 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
465 | }
|
---|
466 | }
|
---|
467 | break;
|
---|
468 | case NGHTTP2_HEADERS:
|
---|
469 | if(stream->bodystarted) {
|
---|
470 | /* Only valid HEADERS after body started is trailer HEADERS. We
|
---|
471 | buffer them in on_header callback. */
|
---|
472 | break;
|
---|
473 | }
|
---|
474 |
|
---|
475 | /* nghttp2 guarantees that :status is received, and we store it to
|
---|
476 | stream->status_code */
|
---|
477 | DEBUGASSERT(stream->status_code != -1);
|
---|
478 |
|
---|
479 | /* Only final status code signals the end of header */
|
---|
480 | if(stream->status_code / 100 != 1) {
|
---|
481 | stream->bodystarted = TRUE;
|
---|
482 | stream->status_code = -1;
|
---|
483 | }
|
---|
484 |
|
---|
485 | Curl_add_buffer(stream->header_recvbuf, "\r\n", 2);
|
---|
486 |
|
---|
487 | left = stream->header_recvbuf->size_used - stream->nread_header_recvbuf;
|
---|
488 | ncopy = MIN(stream->len, left);
|
---|
489 |
|
---|
490 | memcpy(&stream->mem[stream->memlen],
|
---|
491 | stream->header_recvbuf->buffer + stream->nread_header_recvbuf,
|
---|
492 | ncopy);
|
---|
493 | stream->nread_header_recvbuf += ncopy;
|
---|
494 |
|
---|
495 | DEBUGF(infof(data_s, "Store %zu bytes headers from stream %u at %p\n",
|
---|
496 | ncopy, stream_id, stream->mem));
|
---|
497 |
|
---|
498 | stream->len -= ncopy;
|
---|
499 | stream->memlen += ncopy;
|
---|
500 |
|
---|
501 | data_s->state.drain++;
|
---|
502 | {
|
---|
503 | /* get the pointer from userp again since it was re-assigned above */
|
---|
504 | struct connectdata *conn_s = (struct connectdata *)userp;
|
---|
505 |
|
---|
506 | /* if we receive data for another handle, wake that up */
|
---|
507 | if(conn_s->data != data_s)
|
---|
508 | Curl_expire(data_s, 1);
|
---|
509 | }
|
---|
510 | break;
|
---|
511 | case NGHTTP2_PUSH_PROMISE:
|
---|
512 | rv = push_promise(data_s, conn, &frame->push_promise);
|
---|
513 | if(rv) { /* deny! */
|
---|
514 | rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
|
---|
515 | frame->push_promise.promised_stream_id,
|
---|
516 | NGHTTP2_CANCEL);
|
---|
517 | if(nghttp2_is_fatal(rv)) {
|
---|
518 | return rv;
|
---|
519 | }
|
---|
520 | }
|
---|
521 | break;
|
---|
522 | default:
|
---|
523 | DEBUGF(infof(conn->data, "Got frame type %x for stream %u!\n",
|
---|
524 | frame->hd.type, stream_id));
|
---|
525 | break;
|
---|
526 | }
|
---|
527 | return 0;
|
---|
528 | }
|
---|
529 |
|
---|
530 | static int on_invalid_frame_recv(nghttp2_session *session,
|
---|
531 | const nghttp2_frame *frame,
|
---|
532 | int lib_error_code, void *userp)
|
---|
533 | {
|
---|
534 | struct SessionHandle *data_s = NULL;
|
---|
535 | (void)userp;
|
---|
536 |
|
---|
537 | data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
|
---|
538 | if(data_s) {
|
---|
539 | DEBUGF(infof(data_s,
|
---|
540 | "on_invalid_frame_recv() was called, error=%d:%s\n",
|
---|
541 | lib_error_code, nghttp2_strerror(lib_error_code)));
|
---|
542 | }
|
---|
543 | return 0;
|
---|
544 | }
|
---|
545 |
|
---|
546 | static int on_data_chunk_recv(nghttp2_session *session, uint8_t flags,
|
---|
547 | int32_t stream_id,
|
---|
548 | const uint8_t *data, size_t len, void *userp)
|
---|
549 | {
|
---|
550 | struct HTTP *stream;
|
---|
551 | struct SessionHandle *data_s;
|
---|
552 | size_t nread;
|
---|
553 | struct connectdata *conn = (struct connectdata *)userp;
|
---|
554 | (void)session;
|
---|
555 | (void)flags;
|
---|
556 | (void)data;
|
---|
557 |
|
---|
558 | DEBUGASSERT(stream_id); /* should never be a zero stream ID here */
|
---|
559 |
|
---|
560 | /* get the stream from the hash based on Stream ID */
|
---|
561 | data_s = nghttp2_session_get_stream_user_data(session, stream_id);
|
---|
562 | if(!data_s)
|
---|
563 | /* Receiving a Stream ID not in the hash should not happen, this is an
|
---|
564 | internal error more than anything else! */
|
---|
565 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
566 |
|
---|
567 | stream = data_s->req.protop;
|
---|
568 | if(!stream)
|
---|
569 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
570 |
|
---|
571 | nread = MIN(stream->len, len);
|
---|
572 | memcpy(&stream->mem[stream->memlen], data, nread);
|
---|
573 |
|
---|
574 | stream->len -= nread;
|
---|
575 | stream->memlen += nread;
|
---|
576 |
|
---|
577 | data_s->state.drain++;
|
---|
578 |
|
---|
579 | /* if we receive data for another handle, wake that up */
|
---|
580 | if(conn->data != data_s)
|
---|
581 | Curl_expire(data_s, 1); /* TODO: fix so that this can be set to 0 for
|
---|
582 | immediately? */
|
---|
583 |
|
---|
584 | DEBUGF(infof(data_s, "%zu data received for stream %u "
|
---|
585 | "(%zu left in buffer %p, total %zu)\n",
|
---|
586 | nread, stream_id,
|
---|
587 | stream->len, stream->mem,
|
---|
588 | stream->memlen));
|
---|
589 |
|
---|
590 | if(nread < len) {
|
---|
591 | stream->pausedata = data + nread;
|
---|
592 | stream->pauselen = len - nread;
|
---|
593 | DEBUGF(infof(data_s, "NGHTTP2_ERR_PAUSE - %zu bytes out of buffer"
|
---|
594 | ", stream %u\n",
|
---|
595 | len - nread, stream_id));
|
---|
596 | data_s->easy_conn->proto.httpc.pause_stream_id = stream_id;
|
---|
597 | return NGHTTP2_ERR_PAUSE;
|
---|
598 | }
|
---|
599 | return 0;
|
---|
600 | }
|
---|
601 |
|
---|
602 | static int before_frame_send(nghttp2_session *session,
|
---|
603 | const nghttp2_frame *frame,
|
---|
604 | void *userp)
|
---|
605 | {
|
---|
606 | struct SessionHandle *data_s;
|
---|
607 | (void)userp;
|
---|
608 |
|
---|
609 | data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
|
---|
610 | if(data_s) {
|
---|
611 | DEBUGF(infof(data_s, "before_frame_send() was called\n"));
|
---|
612 | }
|
---|
613 |
|
---|
614 | return 0;
|
---|
615 | }
|
---|
616 | static int on_frame_send(nghttp2_session *session,
|
---|
617 | const nghttp2_frame *frame,
|
---|
618 | void *userp)
|
---|
619 | {
|
---|
620 | struct SessionHandle *data_s;
|
---|
621 | (void)userp;
|
---|
622 |
|
---|
623 | data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
|
---|
624 | if(data_s) {
|
---|
625 | DEBUGF(infof(data_s, "on_frame_send() was called, length = %zd\n",
|
---|
626 | frame->hd.length));
|
---|
627 | }
|
---|
628 | return 0;
|
---|
629 | }
|
---|
630 | static int on_frame_not_send(nghttp2_session *session,
|
---|
631 | const nghttp2_frame *frame,
|
---|
632 | int lib_error_code, void *userp)
|
---|
633 | {
|
---|
634 | struct SessionHandle *data_s;
|
---|
635 | (void)userp;
|
---|
636 |
|
---|
637 | data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
|
---|
638 | if(data_s) {
|
---|
639 | DEBUGF(infof(data_s,
|
---|
640 | "on_frame_not_send() was called, lib_error_code = %d\n",
|
---|
641 | lib_error_code));
|
---|
642 | }
|
---|
643 | return 0;
|
---|
644 | }
|
---|
645 | static int on_stream_close(nghttp2_session *session, int32_t stream_id,
|
---|
646 | uint32_t error_code, void *userp)
|
---|
647 | {
|
---|
648 | struct SessionHandle *data_s;
|
---|
649 | struct HTTP *stream;
|
---|
650 | (void)session;
|
---|
651 | (void)stream_id;
|
---|
652 | (void)userp;
|
---|
653 |
|
---|
654 | if(stream_id) {
|
---|
655 | /* get the stream from the hash based on Stream ID, stream ID zero is for
|
---|
656 | connection-oriented stuff */
|
---|
657 | data_s = nghttp2_session_get_stream_user_data(session, stream_id);
|
---|
658 | if(!data_s) {
|
---|
659 | /* We could get stream ID not in the hash. For example, if we
|
---|
660 | decided to reject stream (e.g., PUSH_PROMISE). */
|
---|
661 | return 0;
|
---|
662 | }
|
---|
663 | DEBUGF(infof(data_s, "on_stream_close(), error_code = %d, stream %u\n",
|
---|
664 | error_code, stream_id));
|
---|
665 | stream = data_s->req.protop;
|
---|
666 | if(!stream)
|
---|
667 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
668 |
|
---|
669 | stream->error_code = error_code;
|
---|
670 | stream->closed = TRUE;
|
---|
671 |
|
---|
672 | /* remove the entry from the hash as the stream is now gone */
|
---|
673 | nghttp2_session_set_stream_user_data(session, stream_id, 0);
|
---|
674 | DEBUGF(infof(data_s, "Removed stream %u hash!\n", stream_id));
|
---|
675 | }
|
---|
676 | return 0;
|
---|
677 | }
|
---|
678 |
|
---|
679 | static int on_begin_headers(nghttp2_session *session,
|
---|
680 | const nghttp2_frame *frame, void *userp)
|
---|
681 | {
|
---|
682 | struct HTTP *stream;
|
---|
683 | struct SessionHandle *data_s = NULL;
|
---|
684 | (void)userp;
|
---|
685 |
|
---|
686 | data_s = nghttp2_session_get_stream_user_data(session, frame->hd.stream_id);
|
---|
687 | if(!data_s) {
|
---|
688 | return 0;
|
---|
689 | }
|
---|
690 |
|
---|
691 | DEBUGF(infof(data_s, "on_begin_headers() was called\n"));
|
---|
692 |
|
---|
693 | if(frame->hd.type != NGHTTP2_HEADERS) {
|
---|
694 | return 0;
|
---|
695 | }
|
---|
696 |
|
---|
697 | stream = data_s->req.protop;
|
---|
698 | if(!stream || !stream->bodystarted) {
|
---|
699 | return 0;
|
---|
700 | }
|
---|
701 |
|
---|
702 | /* This is trailer HEADERS started. Allocate buffer for them. */
|
---|
703 | DEBUGF(infof(data_s, "trailer field started\n"));
|
---|
704 |
|
---|
705 | assert(stream->trailer_recvbuf == NULL);
|
---|
706 |
|
---|
707 | stream->trailer_recvbuf = Curl_add_buffer_init();
|
---|
708 | if(!stream->trailer_recvbuf) {
|
---|
709 | return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
|
---|
710 | }
|
---|
711 |
|
---|
712 | return 0;
|
---|
713 | }
|
---|
714 |
|
---|
715 | /* Decode HTTP status code. Returns -1 if no valid status code was
|
---|
716 | decoded. */
|
---|
717 | static int decode_status_code(const uint8_t *value, size_t len)
|
---|
718 | {
|
---|
719 | int i;
|
---|
720 | int res;
|
---|
721 |
|
---|
722 | if(len != 3) {
|
---|
723 | return -1;
|
---|
724 | }
|
---|
725 |
|
---|
726 | res = 0;
|
---|
727 |
|
---|
728 | for(i = 0; i < 3; ++i) {
|
---|
729 | char c = value[i];
|
---|
730 |
|
---|
731 | if(c < '0' || c > '9') {
|
---|
732 | return -1;
|
---|
733 | }
|
---|
734 |
|
---|
735 | res *= 10;
|
---|
736 | res += c - '0';
|
---|
737 | }
|
---|
738 |
|
---|
739 | return res;
|
---|
740 | }
|
---|
741 |
|
---|
742 | /* frame->hd.type is either NGHTTP2_HEADERS or NGHTTP2_PUSH_PROMISE */
|
---|
743 | static int on_header(nghttp2_session *session, const nghttp2_frame *frame,
|
---|
744 | const uint8_t *name, size_t namelen,
|
---|
745 | const uint8_t *value, size_t valuelen,
|
---|
746 | uint8_t flags,
|
---|
747 | void *userp)
|
---|
748 | {
|
---|
749 | struct HTTP *stream;
|
---|
750 | struct SessionHandle *data_s;
|
---|
751 | int32_t stream_id = frame->hd.stream_id;
|
---|
752 | struct connectdata *conn = (struct connectdata *)userp;
|
---|
753 | (void)flags;
|
---|
754 |
|
---|
755 | DEBUGASSERT(stream_id); /* should never be a zero stream ID here */
|
---|
756 |
|
---|
757 | /* get the stream from the hash based on Stream ID */
|
---|
758 | data_s = nghttp2_session_get_stream_user_data(session, stream_id);
|
---|
759 | if(!data_s)
|
---|
760 | /* Receiving a Stream ID not in the hash should not happen, this is an
|
---|
761 | internal error more than anything else! */
|
---|
762 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
763 |
|
---|
764 | stream = data_s->req.protop;
|
---|
765 | if(!stream) {
|
---|
766 | failf(data_s, "Internal NULL stream! 5\n");
|
---|
767 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
768 | }
|
---|
769 |
|
---|
770 | /* Store received PUSH_PROMISE headers to be used when the subsequent
|
---|
771 | PUSH_PROMISE callback comes */
|
---|
772 | if(frame->hd.type == NGHTTP2_PUSH_PROMISE) {
|
---|
773 | char *h;
|
---|
774 |
|
---|
775 | if(!stream->push_headers) {
|
---|
776 | stream->push_headers_alloc = 10;
|
---|
777 | stream->push_headers = malloc(stream->push_headers_alloc *
|
---|
778 | sizeof(char *));
|
---|
779 | stream->push_headers_used = 0;
|
---|
780 | }
|
---|
781 | else if(stream->push_headers_used ==
|
---|
782 | stream->push_headers_alloc) {
|
---|
783 | char **headp;
|
---|
784 | stream->push_headers_alloc *= 2;
|
---|
785 | headp = realloc(stream->push_headers,
|
---|
786 | stream->push_headers_alloc * sizeof(char *));
|
---|
787 | if(!headp) {
|
---|
788 | free(stream->push_headers);
|
---|
789 | stream->push_headers = NULL;
|
---|
790 | return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
|
---|
791 | }
|
---|
792 | stream->push_headers = headp;
|
---|
793 | }
|
---|
794 | h = aprintf("%s:%s", name, value);
|
---|
795 | if(h)
|
---|
796 | stream->push_headers[stream->push_headers_used++] = h;
|
---|
797 | return 0;
|
---|
798 | }
|
---|
799 |
|
---|
800 | if(stream->bodystarted) {
|
---|
801 | /* This is trailer fields. */
|
---|
802 | /* 3 is for ":" and "\r\n". */
|
---|
803 | uint32_t n = (uint32_t)(namelen + valuelen + 3);
|
---|
804 |
|
---|
805 | DEBUGF(infof(data_s, "h2 trailer: %.*s: %.*s\n", namelen, name, valuelen,
|
---|
806 | value));
|
---|
807 |
|
---|
808 | Curl_add_buffer(stream->trailer_recvbuf, &n, sizeof(n));
|
---|
809 | Curl_add_buffer(stream->trailer_recvbuf, name, namelen);
|
---|
810 | Curl_add_buffer(stream->trailer_recvbuf, ":", 1);
|
---|
811 | Curl_add_buffer(stream->trailer_recvbuf, value, valuelen);
|
---|
812 | Curl_add_buffer(stream->trailer_recvbuf, "\r\n\0", 3);
|
---|
813 |
|
---|
814 | return 0;
|
---|
815 | }
|
---|
816 |
|
---|
817 | if(namelen == sizeof(":status") - 1 &&
|
---|
818 | memcmp(":status", name, namelen) == 0) {
|
---|
819 | /* nghttp2 guarantees :status is received first and only once, and
|
---|
820 | value is 3 digits status code, and decode_status_code always
|
---|
821 | succeeds. */
|
---|
822 | stream->status_code = decode_status_code(value, valuelen);
|
---|
823 | DEBUGASSERT(stream->status_code != -1);
|
---|
824 |
|
---|
825 | Curl_add_buffer(stream->header_recvbuf, "HTTP/2.0 ", 9);
|
---|
826 | Curl_add_buffer(stream->header_recvbuf, value, valuelen);
|
---|
827 | Curl_add_buffer(stream->header_recvbuf, "\r\n", 2);
|
---|
828 | data_s->state.drain++;
|
---|
829 | /* if we receive data for another handle, wake that up */
|
---|
830 | if(conn->data != data_s)
|
---|
831 | Curl_expire(data_s, 1);
|
---|
832 |
|
---|
833 | DEBUGF(infof(data_s, "h2 status: HTTP/2 %03d (easy %p)\n",
|
---|
834 | stream->status_code, data_s));
|
---|
835 | return 0;
|
---|
836 | }
|
---|
837 |
|
---|
838 | /* nghttp2 guarantees that namelen > 0, and :status was already
|
---|
839 | received, and this is not pseudo-header field . */
|
---|
840 | /* convert to a HTTP1-style header */
|
---|
841 | Curl_add_buffer(stream->header_recvbuf, name, namelen);
|
---|
842 | Curl_add_buffer(stream->header_recvbuf, ":", 1);
|
---|
843 | Curl_add_buffer(stream->header_recvbuf, value, valuelen);
|
---|
844 | Curl_add_buffer(stream->header_recvbuf, "\r\n", 2);
|
---|
845 | data_s->state.drain++;
|
---|
846 | /* if we receive data for another handle, wake that up */
|
---|
847 | if(conn->data != data_s)
|
---|
848 | Curl_expire(data_s, 1);
|
---|
849 |
|
---|
850 | DEBUGF(infof(data_s, "h2 header: %.*s: %.*s\n", namelen, name, valuelen,
|
---|
851 | value));
|
---|
852 |
|
---|
853 | return 0; /* 0 is successful */
|
---|
854 | }
|
---|
855 |
|
---|
856 | static ssize_t data_source_read_callback(nghttp2_session *session,
|
---|
857 | int32_t stream_id,
|
---|
858 | uint8_t *buf, size_t length,
|
---|
859 | uint32_t *data_flags,
|
---|
860 | nghttp2_data_source *source,
|
---|
861 | void *userp)
|
---|
862 | {
|
---|
863 | struct SessionHandle *data_s;
|
---|
864 | struct HTTP *stream = NULL;
|
---|
865 | size_t nread;
|
---|
866 | (void)source;
|
---|
867 | (void)userp;
|
---|
868 |
|
---|
869 | if(stream_id) {
|
---|
870 | /* get the stream from the hash based on Stream ID, stream ID zero is for
|
---|
871 | connection-oriented stuff */
|
---|
872 | data_s = nghttp2_session_get_stream_user_data(session, stream_id);
|
---|
873 | if(!data_s)
|
---|
874 | /* Receiving a Stream ID not in the hash should not happen, this is an
|
---|
875 | internal error more than anything else! */
|
---|
876 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
877 |
|
---|
878 | stream = data_s->req.protop;
|
---|
879 | if(!stream)
|
---|
880 | return NGHTTP2_ERR_CALLBACK_FAILURE;
|
---|
881 | }
|
---|
882 | else
|
---|
883 | return NGHTTP2_ERR_INVALID_ARGUMENT;
|
---|
884 |
|
---|
885 | nread = MIN(stream->upload_len, length);
|
---|
886 | if(nread > 0) {
|
---|
887 | memcpy(buf, stream->upload_mem, nread);
|
---|
888 | stream->upload_mem += nread;
|
---|
889 | stream->upload_len -= nread;
|
---|
890 | stream->upload_left -= nread;
|
---|
891 | }
|
---|
892 |
|
---|
893 | if(stream->upload_left == 0)
|
---|
894 | *data_flags = 1;
|
---|
895 | else if(nread == 0)
|
---|
896 | return NGHTTP2_ERR_DEFERRED;
|
---|
897 |
|
---|
898 | DEBUGF(infof(data_s, "data_source_read_callback: "
|
---|
899 | "returns %zu bytes stream %u\n",
|
---|
900 | nread, stream_id));
|
---|
901 |
|
---|
902 | return nread;
|
---|
903 | }
|
---|
904 |
|
---|
905 | /*
|
---|
906 | * The HTTP2 settings we send in the Upgrade request
|
---|
907 | */
|
---|
908 | static nghttp2_settings_entry settings[] = {
|
---|
909 | { NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS, 100 },
|
---|
910 | { NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE, NGHTTP2_INITIAL_WINDOW_SIZE },
|
---|
911 | };
|
---|
912 |
|
---|
913 | #define H2_BUFSIZE 32768
|
---|
914 |
|
---|
915 | /*
|
---|
916 | * Initialize nghttp2 for a Curl connection
|
---|
917 | */
|
---|
918 | CURLcode Curl_http2_init(struct connectdata *conn)
|
---|
919 | {
|
---|
920 | if(!conn->proto.httpc.h2) {
|
---|
921 | int rc;
|
---|
922 | nghttp2_session_callbacks *callbacks;
|
---|
923 |
|
---|
924 | conn->proto.httpc.inbuf = malloc(H2_BUFSIZE);
|
---|
925 | if(conn->proto.httpc.inbuf == NULL)
|
---|
926 | return CURLE_OUT_OF_MEMORY;
|
---|
927 |
|
---|
928 | rc = nghttp2_session_callbacks_new(&callbacks);
|
---|
929 |
|
---|
930 | if(rc) {
|
---|
931 | failf(conn->data, "Couldn't initialize nghttp2 callbacks!");
|
---|
932 | return CURLE_OUT_OF_MEMORY; /* most likely at least */
|
---|
933 | }
|
---|
934 |
|
---|
935 | /* nghttp2_send_callback */
|
---|
936 | nghttp2_session_callbacks_set_send_callback(callbacks, send_callback);
|
---|
937 | /* nghttp2_on_frame_recv_callback */
|
---|
938 | nghttp2_session_callbacks_set_on_frame_recv_callback
|
---|
939 | (callbacks, on_frame_recv);
|
---|
940 | /* nghttp2_on_invalid_frame_recv_callback */
|
---|
941 | nghttp2_session_callbacks_set_on_invalid_frame_recv_callback
|
---|
942 | (callbacks, on_invalid_frame_recv);
|
---|
943 | /* nghttp2_on_data_chunk_recv_callback */
|
---|
944 | nghttp2_session_callbacks_set_on_data_chunk_recv_callback
|
---|
945 | (callbacks, on_data_chunk_recv);
|
---|
946 | /* nghttp2_before_frame_send_callback */
|
---|
947 | nghttp2_session_callbacks_set_before_frame_send_callback
|
---|
948 | (callbacks, before_frame_send);
|
---|
949 | /* nghttp2_on_frame_send_callback */
|
---|
950 | nghttp2_session_callbacks_set_on_frame_send_callback
|
---|
951 | (callbacks, on_frame_send);
|
---|
952 | /* nghttp2_on_frame_not_send_callback */
|
---|
953 | nghttp2_session_callbacks_set_on_frame_not_send_callback
|
---|
954 | (callbacks, on_frame_not_send);
|
---|
955 | /* nghttp2_on_stream_close_callback */
|
---|
956 | nghttp2_session_callbacks_set_on_stream_close_callback
|
---|
957 | (callbacks, on_stream_close);
|
---|
958 | /* nghttp2_on_begin_headers_callback */
|
---|
959 | nghttp2_session_callbacks_set_on_begin_headers_callback
|
---|
960 | (callbacks, on_begin_headers);
|
---|
961 | /* nghttp2_on_header_callback */
|
---|
962 | nghttp2_session_callbacks_set_on_header_callback(callbacks, on_header);
|
---|
963 |
|
---|
964 | /* The nghttp2 session is not yet setup, do it */
|
---|
965 | rc = nghttp2_session_client_new(&conn->proto.httpc.h2, callbacks, conn);
|
---|
966 |
|
---|
967 | nghttp2_session_callbacks_del(callbacks);
|
---|
968 |
|
---|
969 | if(rc) {
|
---|
970 | failf(conn->data, "Couldn't initialize nghttp2!");
|
---|
971 | return CURLE_OUT_OF_MEMORY; /* most likely at least */
|
---|
972 | }
|
---|
973 | }
|
---|
974 | return CURLE_OK;
|
---|
975 | }
|
---|
976 |
|
---|
977 | /*
|
---|
978 | * Append headers to ask for a HTTP1.1 to HTTP2 upgrade.
|
---|
979 | */
|
---|
980 | CURLcode Curl_http2_request_upgrade(Curl_send_buffer *req,
|
---|
981 | struct connectdata *conn)
|
---|
982 | {
|
---|
983 | CURLcode result;
|
---|
984 | ssize_t binlen;
|
---|
985 | char *base64;
|
---|
986 | size_t blen;
|
---|
987 | struct SingleRequest *k = &conn->data->req;
|
---|
988 | uint8_t *binsettings = conn->proto.httpc.binsettings;
|
---|
989 |
|
---|
990 | /* As long as we have a fixed set of settings, we don't have to dynamically
|
---|
991 | * figure out the base64 strings since it'll always be the same. However,
|
---|
992 | * the settings will likely not be fixed every time in the future.
|
---|
993 | */
|
---|
994 |
|
---|
995 | /* this returns number of bytes it wrote */
|
---|
996 | binlen = nghttp2_pack_settings_payload(binsettings, H2_BINSETTINGS_LEN,
|
---|
997 | settings,
|
---|
998 | sizeof(settings)/sizeof(settings[0]));
|
---|
999 | if(!binlen) {
|
---|
1000 | failf(conn->data, "nghttp2 unexpectedly failed on pack_settings_payload");
|
---|
1001 | return CURLE_FAILED_INIT;
|
---|
1002 | }
|
---|
1003 | conn->proto.httpc.binlen = binlen;
|
---|
1004 |
|
---|
1005 | result = Curl_base64url_encode(conn->data, (const char *)binsettings, binlen,
|
---|
1006 | &base64, &blen);
|
---|
1007 | if(result)
|
---|
1008 | return result;
|
---|
1009 |
|
---|
1010 | result = Curl_add_bufferf(req,
|
---|
1011 | "Connection: Upgrade, HTTP2-Settings\r\n"
|
---|
1012 | "Upgrade: %s\r\n"
|
---|
1013 | "HTTP2-Settings: %s\r\n",
|
---|
1014 | NGHTTP2_CLEARTEXT_PROTO_VERSION_ID, base64);
|
---|
1015 | free(base64);
|
---|
1016 |
|
---|
1017 | k->upgr101 = UPGR101_REQUESTED;
|
---|
1018 |
|
---|
1019 | return result;
|
---|
1020 | }
|
---|
1021 |
|
---|
1022 | static ssize_t http2_handle_stream_close(struct connectdata *conn,
|
---|
1023 | struct SessionHandle *data,
|
---|
1024 | struct HTTP *stream, CURLcode *err) {
|
---|
1025 | char *trailer_pos, *trailer_end;
|
---|
1026 | CURLcode result;
|
---|
1027 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
1028 |
|
---|
1029 | if(httpc->pause_stream_id == stream->stream_id) {
|
---|
1030 | httpc->pause_stream_id = 0;
|
---|
1031 | }
|
---|
1032 | /* Reset to FALSE to prevent infinite loop in readwrite_data
|
---|
1033 | function. */
|
---|
1034 | stream->closed = FALSE;
|
---|
1035 | if(stream->error_code != NGHTTP2_NO_ERROR) {
|
---|
1036 | failf(data, "HTTP/2 stream %u was not closed cleanly: error_code = %d",
|
---|
1037 | stream->stream_id, stream->error_code);
|
---|
1038 | *err = CURLE_HTTP2;
|
---|
1039 | return -1;
|
---|
1040 | }
|
---|
1041 |
|
---|
1042 | if(stream->trailer_recvbuf && stream->trailer_recvbuf->buffer) {
|
---|
1043 | trailer_pos = stream->trailer_recvbuf->buffer;
|
---|
1044 | trailer_end = trailer_pos + stream->trailer_recvbuf->size_used;
|
---|
1045 |
|
---|
1046 | for(; trailer_pos < trailer_end;) {
|
---|
1047 | uint32_t n;
|
---|
1048 | memcpy(&n, trailer_pos, sizeof(n));
|
---|
1049 | trailer_pos += sizeof(n);
|
---|
1050 |
|
---|
1051 | result = Curl_client_write(conn, CLIENTWRITE_HEADER, trailer_pos, n);
|
---|
1052 | if(result) {
|
---|
1053 | *err = result;
|
---|
1054 | return -1;
|
---|
1055 | }
|
---|
1056 |
|
---|
1057 | trailer_pos += n + 1;
|
---|
1058 | }
|
---|
1059 | }
|
---|
1060 |
|
---|
1061 | DEBUGF(infof(data, "http2_recv returns 0, http2_handle_stream_close\n"));
|
---|
1062 | return 0;
|
---|
1063 | }
|
---|
1064 |
|
---|
1065 | /*
|
---|
1066 | * h2_pri_spec() fills in the pri_spec struct, used by nghttp2 to send weight
|
---|
1067 | * and dependency to the peer. It also stores the updated values in the state
|
---|
1068 | * struct.
|
---|
1069 | */
|
---|
1070 |
|
---|
1071 | static void h2_pri_spec(struct SessionHandle *data,
|
---|
1072 | nghttp2_priority_spec *pri_spec)
|
---|
1073 | {
|
---|
1074 | struct HTTP *depstream = (data->set.stream_depends_on?
|
---|
1075 | data->set.stream_depends_on->req.protop:NULL);
|
---|
1076 | int32_t depstream_id = depstream? depstream->stream_id:0;
|
---|
1077 | nghttp2_priority_spec_init(pri_spec, depstream_id, data->set.stream_weight,
|
---|
1078 | data->set.stream_depends_e);
|
---|
1079 | data->state.stream_weight = data->set.stream_weight;
|
---|
1080 | data->state.stream_depends_e = data->set.stream_depends_e;
|
---|
1081 | data->state.stream_depends_on = data->set.stream_depends_on;
|
---|
1082 | }
|
---|
1083 |
|
---|
1084 | /*
|
---|
1085 | * h2_session_send() checks if there's been an update in the priority /
|
---|
1086 | * dependency settings and if so it submits a PRIORITY frame with the updated
|
---|
1087 | * info.
|
---|
1088 | */
|
---|
1089 | static int h2_session_send(struct SessionHandle *data,
|
---|
1090 | nghttp2_session *h2)
|
---|
1091 | {
|
---|
1092 | struct HTTP *stream = data->req.protop;
|
---|
1093 | if((data->set.stream_weight != data->state.stream_weight) ||
|
---|
1094 | (data->set.stream_depends_e != data->state.stream_depends_e) ||
|
---|
1095 | (data->set.stream_depends_on != data->state.stream_depends_on) ) {
|
---|
1096 | /* send new weight and/or dependency */
|
---|
1097 | nghttp2_priority_spec pri_spec;
|
---|
1098 | int rv;
|
---|
1099 |
|
---|
1100 | h2_pri_spec(data, &pri_spec);
|
---|
1101 |
|
---|
1102 | DEBUGF(infof(data, "Queuing PRIORITY on stream %u (easy %p)\n",
|
---|
1103 | stream->stream_id, data));
|
---|
1104 | rv = nghttp2_submit_priority(h2, NGHTTP2_FLAG_NONE, stream->stream_id,
|
---|
1105 | &pri_spec);
|
---|
1106 | if(rv)
|
---|
1107 | return rv;
|
---|
1108 | }
|
---|
1109 |
|
---|
1110 | return nghttp2_session_send(h2);
|
---|
1111 | }
|
---|
1112 |
|
---|
1113 | /*
|
---|
1114 | * If the read would block (EWOULDBLOCK) we return -1. Otherwise we return
|
---|
1115 | * a regular CURLcode value.
|
---|
1116 | */
|
---|
1117 | static ssize_t http2_recv(struct connectdata *conn, int sockindex,
|
---|
1118 | char *mem, size_t len, CURLcode *err)
|
---|
1119 | {
|
---|
1120 | CURLcode result = CURLE_OK;
|
---|
1121 | ssize_t rv;
|
---|
1122 | ssize_t nread;
|
---|
1123 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
1124 | struct SessionHandle *data = conn->data;
|
---|
1125 | struct HTTP *stream = data->req.protop;
|
---|
1126 |
|
---|
1127 | (void)sockindex; /* we always do HTTP2 on sockindex 0 */
|
---|
1128 |
|
---|
1129 | /* If stream is closed, return 0 to signal the http routine to close
|
---|
1130 | the connection. We need to handle stream closure here,
|
---|
1131 | otherwise, we may be going to read from underlying connection,
|
---|
1132 | and gets EAGAIN, and we will get stuck there. */
|
---|
1133 | if(stream->memlen == 0 && stream->closed) {
|
---|
1134 | return http2_handle_stream_close(conn, data, stream, err);
|
---|
1135 | }
|
---|
1136 |
|
---|
1137 | /* Nullify here because we call nghttp2_session_send() and they
|
---|
1138 | might refer to the old buffer. */
|
---|
1139 | stream->upload_mem = NULL;
|
---|
1140 | stream->upload_len = 0;
|
---|
1141 |
|
---|
1142 | /*
|
---|
1143 | * At this point 'stream' is just in the SessionHandle the connection
|
---|
1144 | * identifies as its owner at this time.
|
---|
1145 | */
|
---|
1146 |
|
---|
1147 | if(stream->bodystarted &&
|
---|
1148 | stream->nread_header_recvbuf < stream->header_recvbuf->size_used) {
|
---|
1149 | /* If there is body data pending for this stream to return, do that */
|
---|
1150 | size_t left =
|
---|
1151 | stream->header_recvbuf->size_used - stream->nread_header_recvbuf;
|
---|
1152 | size_t ncopy = MIN(len, left);
|
---|
1153 | memcpy(mem, stream->header_recvbuf->buffer + stream->nread_header_recvbuf,
|
---|
1154 | ncopy);
|
---|
1155 | stream->nread_header_recvbuf += ncopy;
|
---|
1156 |
|
---|
1157 | DEBUGF(infof(data, "http2_recv: Got %d bytes from header_recvbuf\n",
|
---|
1158 | (int)ncopy));
|
---|
1159 | return ncopy;
|
---|
1160 | }
|
---|
1161 |
|
---|
1162 | DEBUGF(infof(data, "http2_recv: easy %p (stream %u)\n",
|
---|
1163 | data, stream->stream_id));
|
---|
1164 |
|
---|
1165 | if((data->state.drain) && stream->memlen) {
|
---|
1166 | DEBUGF(infof(data, "http2_recv: DRAIN %zu bytes stream %u!! (%p => %p)\n",
|
---|
1167 | stream->memlen, stream->stream_id,
|
---|
1168 | stream->mem, mem));
|
---|
1169 | if(mem != stream->mem) {
|
---|
1170 | /* if we didn't get the same buffer this time, we must move the data to
|
---|
1171 | the beginning */
|
---|
1172 | memmove(mem, stream->mem, stream->memlen);
|
---|
1173 | stream->len = len - stream->memlen;
|
---|
1174 | stream->mem = mem;
|
---|
1175 | }
|
---|
1176 | }
|
---|
1177 | else if(stream->pausedata) {
|
---|
1178 | nread = MIN(len, stream->pauselen);
|
---|
1179 | memcpy(mem, stream->pausedata, nread);
|
---|
1180 |
|
---|
1181 | stream->pausedata += nread;
|
---|
1182 | stream->pauselen -= nread;
|
---|
1183 |
|
---|
1184 | infof(data, "%zu data bytes written\n", nread);
|
---|
1185 | if(stream->pauselen == 0) {
|
---|
1186 | DEBUGF(infof(data, "Unpaused by stream %u\n", stream->stream_id));
|
---|
1187 | assert(httpc->pause_stream_id == stream->stream_id);
|
---|
1188 | httpc->pause_stream_id = 0;
|
---|
1189 |
|
---|
1190 | stream->pausedata = NULL;
|
---|
1191 | stream->pauselen = 0;
|
---|
1192 |
|
---|
1193 | /* When NGHTTP2_ERR_PAUSE is returned from
|
---|
1194 | data_source_read_callback, we might not process DATA frame
|
---|
1195 | fully. Calling nghttp2_session_mem_recv() again will
|
---|
1196 | continue to process DATA frame, but if there is no incoming
|
---|
1197 | frames, then we have to call it again with 0-length data.
|
---|
1198 | Without this, on_stream_close callback will not be called,
|
---|
1199 | and stream could be hanged. */
|
---|
1200 | nghttp2_session_mem_recv(httpc->h2, NULL, 0);
|
---|
1201 | }
|
---|
1202 | DEBUGF(infof(data, "http2_recv: returns unpaused %zd bytes on stream %u\n",
|
---|
1203 | nread, stream->stream_id));
|
---|
1204 | return nread;
|
---|
1205 | }
|
---|
1206 | else if(httpc->pause_stream_id) {
|
---|
1207 | /* If a stream paused nghttp2_session_mem_recv previously, and has
|
---|
1208 | not processed all data, it still refers to the buffer in
|
---|
1209 | nghttp2_session. If we call nghttp2_session_mem_recv(), we may
|
---|
1210 | overwrite that buffer. To avoid that situation, just return
|
---|
1211 | here with CURLE_AGAIN. This could be busy loop since data in
|
---|
1212 | socket is not read. But it seems that usually streams are
|
---|
1213 | notified with its drain property, and socket is read again
|
---|
1214 | quickly. */
|
---|
1215 | *err = CURLE_AGAIN;
|
---|
1216 | return -1;
|
---|
1217 | }
|
---|
1218 | else {
|
---|
1219 | char *inbuf;
|
---|
1220 | /* remember where to store incoming data for this stream and how big the
|
---|
1221 | buffer is */
|
---|
1222 | stream->mem = mem;
|
---|
1223 | stream->len = len;
|
---|
1224 | stream->memlen = 0;
|
---|
1225 |
|
---|
1226 | if(httpc->inbuflen == 0) {
|
---|
1227 | nread = ((Curl_recv *)httpc->recv_underlying)(
|
---|
1228 | conn, FIRSTSOCKET, httpc->inbuf, H2_BUFSIZE, &result);
|
---|
1229 |
|
---|
1230 | if(nread == -1) {
|
---|
1231 | if(result != CURLE_AGAIN)
|
---|
1232 | failf(data, "Failed receiving HTTP2 data");
|
---|
1233 | *err = result;
|
---|
1234 | return -1;
|
---|
1235 | }
|
---|
1236 |
|
---|
1237 | if(nread == 0) {
|
---|
1238 | failf(data, "Unexpected EOF");
|
---|
1239 | *err = CURLE_RECV_ERROR;
|
---|
1240 | return -1;
|
---|
1241 | }
|
---|
1242 |
|
---|
1243 | DEBUGF(infof(data, "nread=%zd\n", nread));
|
---|
1244 |
|
---|
1245 | httpc->inbuflen = nread;
|
---|
1246 | inbuf = httpc->inbuf;
|
---|
1247 | }
|
---|
1248 | else {
|
---|
1249 | nread = httpc->inbuflen - httpc->nread_inbuf;
|
---|
1250 | inbuf = httpc->inbuf + httpc->nread_inbuf;
|
---|
1251 |
|
---|
1252 | DEBUGF(infof(data, "Use data left in connection buffer, nread=%zd\n",
|
---|
1253 | nread));
|
---|
1254 | }
|
---|
1255 | rv = nghttp2_session_mem_recv(httpc->h2, (const uint8_t *)inbuf, nread);
|
---|
1256 |
|
---|
1257 | if(nghttp2_is_fatal((int)rv)) {
|
---|
1258 | failf(data, "nghttp2_session_mem_recv() returned %d:%s\n",
|
---|
1259 | rv, nghttp2_strerror((int)rv));
|
---|
1260 | *err = CURLE_RECV_ERROR;
|
---|
1261 | return 0;
|
---|
1262 | }
|
---|
1263 | DEBUGF(infof(data, "nghttp2_session_mem_recv() returns %zd\n", rv));
|
---|
1264 | if(nread == rv) {
|
---|
1265 | DEBUGF(infof(data, "All data in connection buffer processed\n"));
|
---|
1266 | httpc->inbuflen = 0;
|
---|
1267 | httpc->nread_inbuf = 0;
|
---|
1268 | }
|
---|
1269 | else {
|
---|
1270 | httpc->nread_inbuf += rv;
|
---|
1271 | DEBUGF(infof(data, "%zu bytes left in connection buffer\n",
|
---|
1272 | httpc->inbuflen - httpc->nread_inbuf));
|
---|
1273 | }
|
---|
1274 | /* Always send pending frames in nghttp2 session, because
|
---|
1275 | nghttp2_session_mem_recv() may queue new frame */
|
---|
1276 | rv = h2_session_send(data, httpc->h2);
|
---|
1277 | if(rv != 0) {
|
---|
1278 | *err = CURLE_SEND_ERROR;
|
---|
1279 | return 0;
|
---|
1280 | }
|
---|
1281 | }
|
---|
1282 | if(stream->memlen) {
|
---|
1283 | ssize_t retlen = stream->memlen;
|
---|
1284 | DEBUGF(infof(data, "http2_recv: returns %zd for stream %u\n",
|
---|
1285 | retlen, stream->stream_id));
|
---|
1286 | stream->memlen = 0;
|
---|
1287 |
|
---|
1288 | if(httpc->pause_stream_id == stream->stream_id) {
|
---|
1289 | /* data for this stream is returned now, but this stream caused a pause
|
---|
1290 | already so we need it called again asap */
|
---|
1291 | DEBUGF(infof(data, "Data returned for PAUSED stream %u\n",
|
---|
1292 | stream->stream_id));
|
---|
1293 | }
|
---|
1294 | else
|
---|
1295 | data->state.drain = 0; /* this stream is hereby drained */
|
---|
1296 |
|
---|
1297 | return retlen;
|
---|
1298 | }
|
---|
1299 | /* If stream is closed, return 0 to signal the http routine to close
|
---|
1300 | the connection */
|
---|
1301 | if(stream->closed) {
|
---|
1302 | return http2_handle_stream_close(conn, data, stream, err);
|
---|
1303 | }
|
---|
1304 | *err = CURLE_AGAIN;
|
---|
1305 | DEBUGF(infof(data, "http2_recv returns AGAIN for stream %u\n",
|
---|
1306 | stream->stream_id));
|
---|
1307 | return -1;
|
---|
1308 | }
|
---|
1309 |
|
---|
1310 | /* Index where :authority header field will appear in request header
|
---|
1311 | field list. */
|
---|
1312 | #define AUTHORITY_DST_IDX 3
|
---|
1313 |
|
---|
1314 | /* return number of received (decrypted) bytes */
|
---|
1315 | static ssize_t http2_send(struct connectdata *conn, int sockindex,
|
---|
1316 | const void *mem, size_t len, CURLcode *err)
|
---|
1317 | {
|
---|
1318 | /*
|
---|
1319 | * BIG TODO: Currently, we send request in this function, but this
|
---|
1320 | * function is also used to send request body. It would be nice to
|
---|
1321 | * add dedicated function for request.
|
---|
1322 | */
|
---|
1323 | int rv;
|
---|
1324 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
1325 | struct HTTP *stream = conn->data->req.protop;
|
---|
1326 | nghttp2_nv *nva;
|
---|
1327 | size_t nheader;
|
---|
1328 | size_t i;
|
---|
1329 | size_t authority_idx;
|
---|
1330 | char *hdbuf = (char*)mem;
|
---|
1331 | char *end;
|
---|
1332 | nghttp2_data_provider data_prd;
|
---|
1333 | int32_t stream_id;
|
---|
1334 | nghttp2_session *h2 = httpc->h2;
|
---|
1335 | nghttp2_priority_spec pri_spec;
|
---|
1336 |
|
---|
1337 | (void)sockindex;
|
---|
1338 |
|
---|
1339 | DEBUGF(infof(conn->data, "http2_send len=%zu\n", len));
|
---|
1340 |
|
---|
1341 | if(stream->stream_id != -1) {
|
---|
1342 | /* If stream_id != -1, we have dispatched request HEADERS, and now
|
---|
1343 | are going to send or sending request body in DATA frame */
|
---|
1344 | stream->upload_mem = mem;
|
---|
1345 | stream->upload_len = len;
|
---|
1346 | nghttp2_session_resume_data(h2, stream->stream_id);
|
---|
1347 | rv = h2_session_send(conn->data, h2);
|
---|
1348 | if(nghttp2_is_fatal(rv)) {
|
---|
1349 | *err = CURLE_SEND_ERROR;
|
---|
1350 | return -1;
|
---|
1351 | }
|
---|
1352 | len -= stream->upload_len;
|
---|
1353 |
|
---|
1354 | /* Nullify here because we call nghttp2_session_send() and they
|
---|
1355 | might refer to the old buffer. */
|
---|
1356 | stream->upload_mem = NULL;
|
---|
1357 | stream->upload_len = 0;
|
---|
1358 |
|
---|
1359 | if(stream->upload_left) {
|
---|
1360 | /* we are sure that we have more data to send here. Calling the
|
---|
1361 | following API will make nghttp2_session_want_write() return
|
---|
1362 | nonzero if remote window allows it, which then libcurl checks
|
---|
1363 | socket is writable or not. See http2_perform_getsock(). */
|
---|
1364 | nghttp2_session_resume_data(h2, stream->stream_id);
|
---|
1365 | }
|
---|
1366 |
|
---|
1367 | DEBUGF(infof(conn->data, "http2_send returns %zu for stream %u\n", len,
|
---|
1368 | stream->stream_id));
|
---|
1369 | return len;
|
---|
1370 | }
|
---|
1371 |
|
---|
1372 | /* Calculate number of headers contained in [mem, mem + len) */
|
---|
1373 | /* Here, we assume the curl http code generate *correct* HTTP header
|
---|
1374 | field block */
|
---|
1375 | nheader = 0;
|
---|
1376 | for(i = 0; i < len; ++i) {
|
---|
1377 | if(hdbuf[i] == 0x0a) {
|
---|
1378 | ++nheader;
|
---|
1379 | }
|
---|
1380 | }
|
---|
1381 | /* We counted additional 2 \n in the first and last line. We need 3
|
---|
1382 | new headers: :method, :path and :scheme. Therefore we need one
|
---|
1383 | more space. */
|
---|
1384 | nheader += 1;
|
---|
1385 | nva = malloc(sizeof(nghttp2_nv) * nheader);
|
---|
1386 | if(nva == NULL) {
|
---|
1387 | *err = CURLE_OUT_OF_MEMORY;
|
---|
1388 | return -1;
|
---|
1389 | }
|
---|
1390 | /* Extract :method, :path from request line */
|
---|
1391 | end = strchr(hdbuf, ' ');
|
---|
1392 | if(!end)
|
---|
1393 | goto fail;
|
---|
1394 | nva[0].name = (unsigned char *)":method";
|
---|
1395 | nva[0].namelen = (uint16_t)strlen((char *)nva[0].name);
|
---|
1396 | nva[0].value = (unsigned char *)hdbuf;
|
---|
1397 | nva[0].valuelen = (uint16_t)(end - hdbuf);
|
---|
1398 | nva[0].flags = NGHTTP2_NV_FLAG_NONE;
|
---|
1399 |
|
---|
1400 | hdbuf = end + 1;
|
---|
1401 |
|
---|
1402 | end = strchr(hdbuf, ' ');
|
---|
1403 | if(!end)
|
---|
1404 | goto fail;
|
---|
1405 | nva[1].name = (unsigned char *)":path";
|
---|
1406 | nva[1].namelen = (uint16_t)strlen((char *)nva[1].name);
|
---|
1407 | nva[1].value = (unsigned char *)hdbuf;
|
---|
1408 | nva[1].valuelen = (uint16_t)(end - hdbuf);
|
---|
1409 | nva[1].flags = NGHTTP2_NV_FLAG_NONE;
|
---|
1410 |
|
---|
1411 | nva[2].name = (unsigned char *)":scheme";
|
---|
1412 | nva[2].namelen = (uint16_t)strlen((char *)nva[2].name);
|
---|
1413 | if(conn->handler->flags & PROTOPT_SSL)
|
---|
1414 | nva[2].value = (unsigned char *)"https";
|
---|
1415 | else
|
---|
1416 | nva[2].value = (unsigned char *)"http";
|
---|
1417 | nva[2].valuelen = (uint16_t)strlen((char *)nva[2].value);
|
---|
1418 | nva[2].flags = NGHTTP2_NV_FLAG_NONE;
|
---|
1419 |
|
---|
1420 | hdbuf = strchr(hdbuf, 0x0a);
|
---|
1421 | if(!hdbuf)
|
---|
1422 | goto fail;
|
---|
1423 | ++hdbuf;
|
---|
1424 |
|
---|
1425 | authority_idx = 0;
|
---|
1426 |
|
---|
1427 | i = 3;
|
---|
1428 | while(i < nheader) {
|
---|
1429 | size_t hlen;
|
---|
1430 | int skip = 0;
|
---|
1431 | end = strchr(hdbuf, ':');
|
---|
1432 | if(!end)
|
---|
1433 | goto fail;
|
---|
1434 | hlen = end - hdbuf;
|
---|
1435 | if(hlen == 10 && Curl_raw_nequal("connection", hdbuf, 10)) {
|
---|
1436 | /* skip Connection: headers! */
|
---|
1437 | skip = 1;
|
---|
1438 | --nheader;
|
---|
1439 | }
|
---|
1440 | else if(hlen == 4 && Curl_raw_nequal("host", hdbuf, 4)) {
|
---|
1441 | authority_idx = i;
|
---|
1442 | nva[i].name = (unsigned char *)":authority";
|
---|
1443 | nva[i].namelen = (uint16_t)strlen((char *)nva[i].name);
|
---|
1444 | }
|
---|
1445 | else {
|
---|
1446 | nva[i].name = (unsigned char *)hdbuf;
|
---|
1447 | nva[i].namelen = (uint16_t)(end - hdbuf);
|
---|
1448 | }
|
---|
1449 | hdbuf = end + 1;
|
---|
1450 | for(; *hdbuf == ' '; ++hdbuf);
|
---|
1451 | end = strchr(hdbuf, 0x0d);
|
---|
1452 | if(!end)
|
---|
1453 | goto fail;
|
---|
1454 | if(!skip) {
|
---|
1455 | nva[i].value = (unsigned char *)hdbuf;
|
---|
1456 | nva[i].valuelen = (uint16_t)(end - hdbuf);
|
---|
1457 | nva[i].flags = NGHTTP2_NV_FLAG_NONE;
|
---|
1458 | /* Inspect Content-Length header field and retrieve the request
|
---|
1459 | entity length so that we can set END_STREAM to the last DATA
|
---|
1460 | frame. */
|
---|
1461 | if(nva[i].namelen == 14 &&
|
---|
1462 | Curl_raw_nequal("content-length", (char*)nva[i].name, 14)) {
|
---|
1463 | size_t j;
|
---|
1464 | stream->upload_left = 0;
|
---|
1465 | for(j = 0; j < nva[i].valuelen; ++j) {
|
---|
1466 | stream->upload_left *= 10;
|
---|
1467 | stream->upload_left += nva[i].value[j] - '0';
|
---|
1468 | }
|
---|
1469 | DEBUGF(infof(conn->data,
|
---|
1470 | "request content-length=%"
|
---|
1471 | CURL_FORMAT_CURL_OFF_T
|
---|
1472 | "\n", stream->upload_left));
|
---|
1473 | }
|
---|
1474 | ++i;
|
---|
1475 | }
|
---|
1476 | hdbuf = end + 2;
|
---|
1477 | }
|
---|
1478 |
|
---|
1479 | /* :authority must come before non-pseudo header fields */
|
---|
1480 | if(authority_idx != 0 && authority_idx != AUTHORITY_DST_IDX) {
|
---|
1481 | nghttp2_nv authority = nva[authority_idx];
|
---|
1482 | for(i = authority_idx; i > AUTHORITY_DST_IDX; --i) {
|
---|
1483 | nva[i] = nva[i - 1];
|
---|
1484 | }
|
---|
1485 | nva[i] = authority;
|
---|
1486 | }
|
---|
1487 |
|
---|
1488 | h2_pri_spec(conn->data, &pri_spec);
|
---|
1489 |
|
---|
1490 | switch(conn->data->set.httpreq) {
|
---|
1491 | case HTTPREQ_POST:
|
---|
1492 | case HTTPREQ_POST_FORM:
|
---|
1493 | case HTTPREQ_PUT:
|
---|
1494 | data_prd.read_callback = data_source_read_callback;
|
---|
1495 | data_prd.source.ptr = NULL;
|
---|
1496 | stream_id = nghttp2_submit_request(h2, &pri_spec, nva, nheader,
|
---|
1497 | &data_prd, conn->data);
|
---|
1498 | break;
|
---|
1499 | default:
|
---|
1500 | stream_id = nghttp2_submit_request(h2, &pri_spec, nva, nheader,
|
---|
1501 | NULL, conn->data);
|
---|
1502 | }
|
---|
1503 |
|
---|
1504 | Curl_safefree(nva);
|
---|
1505 |
|
---|
1506 | if(stream_id < 0) {
|
---|
1507 | DEBUGF(infof(conn->data, "http2_send() send error\n"));
|
---|
1508 | *err = CURLE_SEND_ERROR;
|
---|
1509 | return -1;
|
---|
1510 | }
|
---|
1511 |
|
---|
1512 | infof(conn->data, "Using Stream ID: %x (easy handle %p)\n",
|
---|
1513 | stream_id, conn->data);
|
---|
1514 | stream->stream_id = stream_id;
|
---|
1515 |
|
---|
1516 | /* this does not call h2_session_send() since there can not have been any
|
---|
1517 | * priority upodate since the nghttp2_submit_request() call above */
|
---|
1518 | rv = nghttp2_session_send(h2);
|
---|
1519 |
|
---|
1520 | if(rv != 0) {
|
---|
1521 | *err = CURLE_SEND_ERROR;
|
---|
1522 | return -1;
|
---|
1523 | }
|
---|
1524 |
|
---|
1525 | if(stream->stream_id != -1) {
|
---|
1526 | /* If whole HEADERS frame was sent off to the underlying socket,
|
---|
1527 | the nghttp2 library calls data_source_read_callback. But only
|
---|
1528 | it found that no data available, so it deferred the DATA
|
---|
1529 | transmission. Which means that nghttp2_session_want_write()
|
---|
1530 | returns 0 on http2_perform_getsock(), which results that no
|
---|
1531 | writable socket check is performed. To workaround this, we
|
---|
1532 | issue nghttp2_session_resume_data() here to bring back DATA
|
---|
1533 | transmission from deferred state. */
|
---|
1534 | nghttp2_session_resume_data(h2, stream->stream_id);
|
---|
1535 | }
|
---|
1536 |
|
---|
1537 | return len;
|
---|
1538 |
|
---|
1539 | fail:
|
---|
1540 | free(nva);
|
---|
1541 | *err = CURLE_SEND_ERROR;
|
---|
1542 | return -1;
|
---|
1543 | }
|
---|
1544 |
|
---|
1545 | CURLcode Curl_http2_setup(struct connectdata *conn)
|
---|
1546 | {
|
---|
1547 | CURLcode result;
|
---|
1548 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
1549 | struct HTTP *stream = conn->data->req.protop;
|
---|
1550 |
|
---|
1551 | stream->stream_id = -1;
|
---|
1552 |
|
---|
1553 | if(!stream->header_recvbuf)
|
---|
1554 | stream->header_recvbuf = Curl_add_buffer_init();
|
---|
1555 |
|
---|
1556 | if((conn->handler == &Curl_handler_http2_ssl) ||
|
---|
1557 | (conn->handler == &Curl_handler_http2))
|
---|
1558 | return CURLE_OK; /* already done */
|
---|
1559 |
|
---|
1560 | if(conn->handler->flags & PROTOPT_SSL)
|
---|
1561 | conn->handler = &Curl_handler_http2_ssl;
|
---|
1562 | else
|
---|
1563 | conn->handler = &Curl_handler_http2;
|
---|
1564 |
|
---|
1565 | result = Curl_http2_init(conn);
|
---|
1566 | if(result)
|
---|
1567 | return result;
|
---|
1568 |
|
---|
1569 | infof(conn->data, "Using HTTP2, server supports multi-use\n");
|
---|
1570 | stream->upload_left = 0;
|
---|
1571 | stream->upload_mem = NULL;
|
---|
1572 | stream->upload_len = 0;
|
---|
1573 |
|
---|
1574 | httpc->inbuflen = 0;
|
---|
1575 | httpc->nread_inbuf = 0;
|
---|
1576 |
|
---|
1577 | httpc->pause_stream_id = 0;
|
---|
1578 |
|
---|
1579 | conn->bits.multiplex = TRUE; /* at least potentially multiplexed */
|
---|
1580 | conn->httpversion = 20;
|
---|
1581 | conn->bundle->multiuse = BUNDLE_MULTIPLEX;
|
---|
1582 |
|
---|
1583 | infof(conn->data, "Connection state changed (HTTP/2 confirmed)\n");
|
---|
1584 | Curl_multi_connchanged(conn->data->multi);
|
---|
1585 |
|
---|
1586 | /* switch on TCP_NODELAY as we need to send off packets without delay for
|
---|
1587 | maximum throughput */
|
---|
1588 | Curl_tcpnodelay(conn, conn->sock[FIRSTSOCKET]);
|
---|
1589 |
|
---|
1590 | return CURLE_OK;
|
---|
1591 | }
|
---|
1592 |
|
---|
1593 | CURLcode Curl_http2_switched(struct connectdata *conn,
|
---|
1594 | const char *mem, size_t nread)
|
---|
1595 | {
|
---|
1596 | CURLcode result;
|
---|
1597 | struct http_conn *httpc = &conn->proto.httpc;
|
---|
1598 | int rv;
|
---|
1599 | ssize_t nproc;
|
---|
1600 | struct SessionHandle *data = conn->data;
|
---|
1601 | struct HTTP *stream = conn->data->req.protop;
|
---|
1602 |
|
---|
1603 | result = Curl_http2_setup(conn);
|
---|
1604 | if(result)
|
---|
1605 | return result;
|
---|
1606 |
|
---|
1607 | httpc->recv_underlying = (recving)conn->recv[FIRSTSOCKET];
|
---|
1608 | httpc->send_underlying = (sending)conn->send[FIRSTSOCKET];
|
---|
1609 | conn->recv[FIRSTSOCKET] = http2_recv;
|
---|
1610 | conn->send[FIRSTSOCKET] = http2_send;
|
---|
1611 |
|
---|
1612 | if(conn->data->req.upgr101 == UPGR101_RECEIVED) {
|
---|
1613 | /* stream 1 is opened implicitly on upgrade */
|
---|
1614 | stream->stream_id = 1;
|
---|
1615 | /* queue SETTINGS frame (again) */
|
---|
1616 | rv = nghttp2_session_upgrade(httpc->h2, httpc->binsettings,
|
---|
1617 | httpc->binlen, NULL);
|
---|
1618 | if(rv != 0) {
|
---|
1619 | failf(data, "nghttp2_session_upgrade() failed: %s(%d)",
|
---|
1620 | nghttp2_strerror(rv), rv);
|
---|
1621 | return CURLE_HTTP2;
|
---|
1622 | }
|
---|
1623 |
|
---|
1624 | nghttp2_session_set_stream_user_data(httpc->h2,
|
---|
1625 | stream->stream_id,
|
---|
1626 | conn->data);
|
---|
1627 | }
|
---|
1628 | else {
|
---|
1629 | /* stream ID is unknown at this point */
|
---|
1630 | stream->stream_id = -1;
|
---|
1631 | rv = nghttp2_submit_settings(httpc->h2, NGHTTP2_FLAG_NONE, NULL, 0);
|
---|
1632 | if(rv != 0) {
|
---|
1633 | failf(data, "nghttp2_submit_settings() failed: %s(%d)",
|
---|
1634 | nghttp2_strerror(rv), rv);
|
---|
1635 | return CURLE_HTTP2;
|
---|
1636 | }
|
---|
1637 | }
|
---|
1638 |
|
---|
1639 | /* we are going to copy mem to httpc->inbuf. This is required since
|
---|
1640 | mem is part of buffer pointed by stream->mem, and callbacks
|
---|
1641 | called by nghttp2_session_mem_recv() will write stream specific
|
---|
1642 | data into stream->mem, overwriting data already there. */
|
---|
1643 | if(H2_BUFSIZE < nread) {
|
---|
1644 | failf(data, "connection buffer size is too small to store data following "
|
---|
1645 | "HTTP Upgrade response header: buflen=%zu, datalen=%zu",
|
---|
1646 | H2_BUFSIZE, nread);
|
---|
1647 | return CURLE_HTTP2;
|
---|
1648 | }
|
---|
1649 |
|
---|
1650 | infof(conn->data, "Copying HTTP/2 data in stream buffer to connection buffer"
|
---|
1651 | " after upgrade: len=%zu\n",
|
---|
1652 | nread);
|
---|
1653 |
|
---|
1654 | memcpy(httpc->inbuf, mem, nread);
|
---|
1655 | httpc->inbuflen = nread;
|
---|
1656 |
|
---|
1657 | nproc = nghttp2_session_mem_recv(httpc->h2, (const uint8_t *)httpc->inbuf,
|
---|
1658 | httpc->inbuflen);
|
---|
1659 |
|
---|
1660 | if(nghttp2_is_fatal((int)nproc)) {
|
---|
1661 | failf(data, "nghttp2_session_mem_recv() failed: %s(%d)",
|
---|
1662 | nghttp2_strerror((int)nproc), (int)nproc);
|
---|
1663 | return CURLE_HTTP2;
|
---|
1664 | }
|
---|
1665 |
|
---|
1666 | DEBUGF(infof(data, "nghttp2_session_mem_recv() returns %zd\n", nproc));
|
---|
1667 |
|
---|
1668 | if((ssize_t)nread == nproc) {
|
---|
1669 | httpc->inbuflen = 0;
|
---|
1670 | httpc->nread_inbuf = 0;
|
---|
1671 | }
|
---|
1672 | else {
|
---|
1673 | httpc->nread_inbuf += nproc;
|
---|
1674 | }
|
---|
1675 |
|
---|
1676 | /* Try to send some frames since we may read SETTINGS already. */
|
---|
1677 | rv = h2_session_send(data, httpc->h2);
|
---|
1678 |
|
---|
1679 | if(rv != 0) {
|
---|
1680 | failf(data, "nghttp2_session_send() failed: %s(%d)",
|
---|
1681 | nghttp2_strerror(rv), rv);
|
---|
1682 | return CURLE_HTTP2;
|
---|
1683 | }
|
---|
1684 |
|
---|
1685 | return CURLE_OK;
|
---|
1686 | }
|
---|
1687 |
|
---|
1688 | #else /* !USE_NGHTTP2 */
|
---|
1689 |
|
---|
1690 | /* Satisfy external references even if http2 is not compiled in. */
|
---|
1691 |
|
---|
1692 | #define CURL_DISABLE_TYPECHECK
|
---|
1693 | #include <curl/curl.h>
|
---|
1694 |
|
---|
1695 | char *curl_pushheader_bynum(struct curl_pushheaders *h, size_t num)
|
---|
1696 | {
|
---|
1697 | (void) h;
|
---|
1698 | (void) num;
|
---|
1699 | return NULL;
|
---|
1700 | }
|
---|
1701 |
|
---|
1702 | char *curl_pushheader_byname(struct curl_pushheaders *h, const char *header)
|
---|
1703 | {
|
---|
1704 | (void) h;
|
---|
1705 | (void) header;
|
---|
1706 | return NULL;
|
---|
1707 | }
|
---|
1708 |
|
---|
1709 | #endif /* USE_NGHTTP2 */
|
---|