1 | // Copyright (c) Microsoft. All rights reserved.
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2 | // Licensed under the MIT license. See LICENSE file in the project root for full license information.
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3 |
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4 | #include <stdlib.h>
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5 | #include <stddef.h>
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6 | #include <stdio.h>
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7 | #include <stdbool.h>
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8 | #include <stdint.h>
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9 | #include "azure_c_shared_utility/gballoc.h"
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10 | #include "azure_c_shared_utility/wsio.h"
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11 | #include "azure_c_shared_utility/xlogging.h"
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12 | #include "azure_c_shared_utility/singlylinkedlist.h"
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13 | #include "azure_c_shared_utility/optionhandler.h"
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14 | #include "azure_c_shared_utility/xio.h"
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15 | #include "azure_c_shared_utility/shared_util_options.h"
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16 | #include "azure_c_shared_utility/crt_abstractions.h"
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17 | #include "azure_c_shared_utility/uws_client.h"
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18 | #include "azure_c_shared_utility/optimize_size.h"
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19 |
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20 | static const char* WSIO_OPTIONS = "WSIOOptions";
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21 |
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22 | typedef enum IO_STATE_TAG
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23 | {
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24 | IO_STATE_NOT_OPEN,
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25 | IO_STATE_OPENING,
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26 | IO_STATE_OPEN,
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27 | IO_STATE_CLOSING,
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28 | IO_STATE_ERROR
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29 | } IO_STATE;
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30 |
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31 | typedef struct PENDING_IO_TAG
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32 | {
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33 | ON_SEND_COMPLETE on_send_complete;
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34 | void* callback_context;
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35 | void* wsio;
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36 | } PENDING_IO;
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37 |
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38 | typedef struct WSIO_INSTANCE_TAG
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39 | {
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40 | ON_BYTES_RECEIVED on_bytes_received;
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41 | void* on_bytes_received_context;
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42 | ON_IO_OPEN_COMPLETE on_io_open_complete;
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43 | void* on_io_open_complete_context;
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44 | ON_IO_ERROR on_io_error;
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45 | void* on_io_error_context;
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46 | ON_IO_CLOSE_COMPLETE on_io_close_complete;
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47 | void* on_io_close_complete_context;
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48 | IO_STATE io_state;
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49 | SINGLYLINKEDLIST_HANDLE pending_io_list;
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50 | UWS_CLIENT_HANDLE uws;
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51 | } WSIO_INSTANCE;
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52 |
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53 | static void indicate_error(WSIO_INSTANCE* wsio_instance)
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54 | {
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55 | wsio_instance->io_state = IO_STATE_ERROR;
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56 | wsio_instance->on_io_error(wsio_instance->on_io_error_context);
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57 | }
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58 |
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59 | static void indicate_open_complete(WSIO_INSTANCE* ws_io_instance, IO_OPEN_RESULT open_result)
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60 | {
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61 | ws_io_instance->on_io_open_complete(ws_io_instance->on_io_open_complete_context, open_result);
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62 | }
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63 |
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64 | static void complete_send_item(LIST_ITEM_HANDLE pending_io_list_item, IO_SEND_RESULT io_send_result)
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65 | {
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66 | PENDING_IO* pending_io = (PENDING_IO*)singlylinkedlist_item_get_value(pending_io_list_item);
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67 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)pending_io->wsio;
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68 |
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69 | /* Codes_SRS_WSIO_01_145: [ Removing it from the list shall be done by calling singlylinkedlist_remove. ]*/
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70 | if (singlylinkedlist_remove(wsio_instance->pending_io_list, pending_io_list_item) != 0)
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71 | {
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72 | LogError("Failed removing pending IO from linked list.");
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73 | }
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74 |
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75 | /* Codes_SRS_WSIO_01_105: [ The argument on_send_complete shall be optional, if NULL is passed by the caller then no send complete callback shall be triggered. ]*/
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76 | if (pending_io->on_send_complete != NULL)
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77 | {
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78 | pending_io->on_send_complete(pending_io->callback_context, io_send_result);
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79 | }
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80 |
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81 | /* Codes_SRS_WSIO_01_144: [ Also the pending IO data shall be freed. ]*/
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82 | free(pending_io);
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83 | }
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84 |
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85 | static void on_underlying_ws_send_frame_complete(void* context, WS_SEND_FRAME_RESULT ws_send_frame_result)
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86 | {
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87 | if (context == NULL)
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88 | {
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89 | LogError("NULL context for on_underlying_ws_send_frame_complete");
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90 | }
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91 | else
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92 | {
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93 | IO_SEND_RESULT io_send_result;
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94 | LIST_ITEM_HANDLE list_item_handle = (LIST_ITEM_HANDLE)context;
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95 |
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96 | /* Codes_SRS_WSIO_01_143: [ When on_underlying_ws_send_frame_complete is called after sending a WebSocket frame, the pending IO shall be removed from the list. ]*/
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97 | switch (ws_send_frame_result)
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98 | {
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99 | default:
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100 | /* Codes_SRS_WSIO_01_148: [ When on_underlying_ws_send_frame_complete is called with any other error code, the callback on_send_complete shall be called with IO_SEND_ERROR. ]*/
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101 | LogError("Frame send error with result %d", (int)ws_send_frame_result);
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102 | io_send_result = IO_SEND_ERROR;
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103 | break;
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104 |
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105 | case WS_SEND_FRAME_OK:
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106 | /* Codes_SRS_WSIO_01_146: [ When on_underlying_ws_send_frame_complete is called with WS_SEND_OK, the callback on_send_complete shall be called with IO_SEND_OK. ]*/
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107 | io_send_result = IO_SEND_OK;
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108 | break;
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109 |
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110 | case WS_SEND_FRAME_CANCELLED:
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111 | /* Codes_SRS_WSIO_01_147: [ When on_underlying_ws_send_frame_complete is called with WS_SEND_CANCELLED, the callback on_send_complete shall be called with IO_SEND_CANCELLED. ]*/
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112 | io_send_result = IO_SEND_CANCELLED;
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113 | break;
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114 | }
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115 |
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116 | complete_send_item(list_item_handle, io_send_result);
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117 | }
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118 | }
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119 |
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120 | static void on_underlying_ws_close_complete(void* context)
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121 | {
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122 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)context;
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123 | if (wsio_instance == NULL)
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124 | {
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125 | /* Codes_SRS_WSIO_01_161: [ If the context passed to on_underlying_ws_close_complete is NULL, on_underlying_ws_close_complete shall do nothing. ]*/
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126 | LogError("NULL context passed to on_underlying_ws_close_complete");
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127 | }
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128 | else
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129 | {
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130 | wsio_instance->io_state = IO_STATE_NOT_OPEN;
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131 |
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132 | /* Codes_SRS_WSIO_01_160: [ If NULL was passed to wsio_close no callback shall be called. ]*/
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133 | if (wsio_instance->on_io_close_complete != NULL)
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134 | {
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135 | /* Codes_SRS_WSIO_01_159: [ When on_underlying_ws_close_complete while the IO is closing (after wsio_close), the close shall be indicated up by calling the on_io_close_complete callback passed to wsio_close. ]*/
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136 | /* Codes_SRS_WSIO_01_163: [ When on_io_close_complete is called, the context passed to wsio_close shall be passed as argument to on_io_close_complete. ]*/
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137 | wsio_instance->on_io_close_complete(wsio_instance->on_io_close_complete_context);
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138 | }
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139 | }
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140 | }
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141 |
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142 | static int internal_close(WSIO_INSTANCE* wsio_instance, ON_IO_CLOSE_COMPLETE on_io_close_complete, void* on_io_close_complete_context)
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143 | {
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144 | int result;
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145 |
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146 | /* Codes_SRS_WSIO_01_089: [ wsio_close after a wsio_close shall fail and return a non-zero value. ]*/
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147 | /* Codes_SRS_WSIO_01_088: [ wsio_close when no open action has been issued shall fail and return a non-zero value. ]*/
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148 | if (wsio_instance->io_state == IO_STATE_NOT_OPEN)
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149 | {
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150 | LogError("wsio_close when not open.");
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151 | result = MU_FAILURE;
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152 | }
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153 | else
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154 | {
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155 | if (wsio_instance->io_state == IO_STATE_OPENING)
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156 | {
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157 | wsio_instance->io_state = IO_STATE_NOT_OPEN;
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158 | indicate_open_complete(wsio_instance, IO_OPEN_CANCELLED);
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159 | result = 0;
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160 | }
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161 | else if (wsio_instance->io_state == IO_STATE_CLOSING)
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162 | {
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163 | LogError("Already closing");
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164 | result = MU_FAILURE;
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165 | }
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166 | else
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167 | {
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168 | LIST_ITEM_HANDLE first_pending_io;
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169 |
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170 | wsio_instance->io_state = IO_STATE_CLOSING;
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171 |
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172 | wsio_instance->on_io_close_complete = on_io_close_complete;
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173 | wsio_instance->on_io_close_complete_context = on_io_close_complete_context;
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174 |
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175 | /* Codes_SRS_WSIO_01_087: [ wsio_close shall call uws_client_close_async while passing as argument the IO handle created in wsio_create. ]*/
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176 | if (uws_client_close_async(wsio_instance->uws, on_underlying_ws_close_complete, wsio_instance) != 0)
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177 | {
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178 | /* Codes_SRS_WSIO_01_164: [ When uws_client_close_async fails, wsio_close shall call the on_io_close_complete callback and continue. ] */
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179 | if (wsio_instance->on_io_close_complete != NULL)
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180 | {
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181 | wsio_instance->on_io_close_complete(wsio_instance->on_io_close_complete_context);
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182 | }
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183 | }
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184 |
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185 | /* Codes_SRS_WSIO_01_085: [ wsio_close shall close the websockets IO if an open action is either pending or has completed successfully (if the IO is open). ]*/
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186 | /* Codes_SRS_WSIO_01_091: [ wsio_close shall obtain all the pending IO items by repetitively querying for the head of the pending IO list and freeing that head item. ]*/
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187 | /* Codes_SRS_WSIO_01_092: [ Obtaining the head of the pending IO list shall be done by calling singlylinkedlist_get_head_item. ]*/
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188 | while ((first_pending_io = singlylinkedlist_get_head_item(wsio_instance->pending_io_list)) != NULL)
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189 | {
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190 | complete_send_item(first_pending_io, IO_SEND_CANCELLED);
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191 | }
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192 |
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193 | /* Codes_SRS_WSIO_01_133: [ On success wsio_close shall return 0. ]*/
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194 | result = 0;
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195 | wsio_instance->io_state = IO_STATE_NOT_OPEN;
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196 | }
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197 | }
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198 | return result;
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199 | }
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200 |
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201 | CONCRETE_IO_HANDLE wsio_create(void* io_create_parameters)
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202 | {
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203 | /* Codes_SRS_WSIO_01_066: [ io_create_parameters shall be used as a WSIO_CONFIG* . ]*/
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204 | WSIO_CONFIG* ws_io_config = (WSIO_CONFIG*)io_create_parameters;
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205 | WSIO_INSTANCE* result;
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206 |
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207 | /* Codes_SRS_WSIO_01_065: [ If the argument io_create_parameters is NULL then wsio_create shall return NULL. ]*/
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208 | if ((ws_io_config == NULL) ||
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209 | /* Codes_SRS_WSIO_01_067: [ If any of the members hostname, resource_name or protocol is NULL in WSIO_CONFIG then wsio_create shall return NULL. ]*/
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210 | (ws_io_config->hostname == NULL) ||
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211 | (ws_io_config->resource_name == NULL) ||
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212 | (ws_io_config->protocol == NULL))
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213 | {
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214 | LogError("NULL io_create_parameters.");
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215 | result = NULL;
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216 | }
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217 | else
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218 | {
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219 | /* Codes_SRS_WSIO_01_001: [wsio_create shall create an instance of wsio and return a non-NULL handle to it.] */
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220 | result = (WSIO_INSTANCE*)malloc(sizeof(WSIO_INSTANCE));
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221 | if (result == NULL)
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222 | {
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223 | /* Codes_SRS_WSIO_01_068: [ If allocating memory for the new wsio instance fails then wsio_create shall return NULL. ]*/
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224 | LogError("Cannot allocate memory for the new WSIO instance.");
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225 | }
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226 | else
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227 | {
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228 | WS_PROTOCOL protocols;
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229 |
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230 | protocols.protocol = ws_io_config->protocol;
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231 |
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232 | result->on_bytes_received = NULL;
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233 | result->on_bytes_received_context = NULL;
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234 | result->on_io_open_complete = NULL;
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235 | result->on_io_open_complete_context = NULL;
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236 | result->on_io_error = NULL;
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237 | result->on_io_error_context = NULL;
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238 | result->on_io_close_complete = NULL;
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239 | result->on_io_close_complete_context = NULL;
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240 |
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241 | /* Codes_SRS_WSIO_01_070: [ The underlying uws instance shall be created by calling uws_client_create_with_io. ]*/
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242 | /* Codes_SRS_WSIO_01_071: [ The arguments for uws_client_create_with_io shall be: ]*/
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243 | /* Codes_SRS_WSIO_01_185: [ - underlying_io_interface shall be set to the underlying_io_interface field in the io_create_parameters passed to wsio_create. ]*/
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244 | /* Codes_SRS_WSIO_01_186: [ - underlying_io_parameters shall be set to the underlying_io_parameters field in the io_create_parameters passed to wsio_create. ]*/
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245 | /* Codes_SRS_WSIO_01_072: [ - hostname set to the hostname field in the io_create_parameters passed to wsio_create. ]*/
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246 | /* Codes_SRS_WSIO_01_130: [ - port set to the port field in the io_create_parameters passed to wsio_create. ]*/
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247 | /* Codes_SRS_WSIO_01_128: [ - resource_name set to the resource_name field in the io_create_parameters passed to wsio_create. ]*/
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248 | /* Codes_SRS_WSIO_01_129: [ - protocols shall be filled with only one structure, that shall have the protocol set to the value of the protocol field in the io_create_parameters passed to wsio_create. ]*/
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249 | result->uws = uws_client_create_with_io(ws_io_config->underlying_io_interface, ws_io_config->underlying_io_parameters, ws_io_config->hostname, ws_io_config->port, ws_io_config->resource_name, &protocols, 1);
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250 | if (result->uws == NULL)
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251 | {
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252 | /* Codes_SRS_WSIO_01_075: [ If uws_client_create_with_io fails, then wsio_create shall fail and return NULL. ]*/
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253 | LogError("Cannot create uws instance.");
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254 | free(result);
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255 | result = NULL;
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256 | }
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257 | else
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258 | {
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259 | /* Codes_SRS_WSIO_01_076: [ wsio_create shall create a pending send IO list that is to be used to queue send packets by calling singlylinkedlist_create. ]*/
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260 | result->pending_io_list = singlylinkedlist_create();
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261 | if (result->pending_io_list == NULL)
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262 | {
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263 | /* Codes_SRS_WSIO_01_077: [ If singlylinkedlist_create fails then wsio_create shall fail and return NULL. ]*/
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264 | LogError("Cannot create singly linked list.");
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265 | uws_client_destroy(result->uws);
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266 | free(result);
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267 | result = NULL;
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268 | }
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269 | else
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270 | {
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271 | result->io_state = IO_STATE_NOT_OPEN;
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272 | }
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273 | }
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274 | }
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275 | }
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276 |
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277 | return result;
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278 | }
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279 |
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280 | void wsio_destroy(CONCRETE_IO_HANDLE ws_io)
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281 | {
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282 | /* Codes_SRS_WSIO_01_079: [ If ws_io is NULL, wsio_destroy shall do nothing. ]*/
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283 | if (ws_io == NULL)
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284 | {
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285 | LogError("NULL handle");
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286 | }
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287 | else
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288 | {
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289 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)ws_io;
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290 |
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291 | if (wsio_instance->io_state != IO_STATE_NOT_OPEN)
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292 | {
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293 | internal_close(wsio_instance, NULL, NULL);
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294 | }
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295 |
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296 | /* Codes_SRS_WSIO_01_078: [ wsio_destroy shall free all resources associated with the wsio instance. ]*/
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297 | /* Codes_SRS_WSIO_01_080: [ wsio_destroy shall destroy the uws instance created in wsio_create by calling uws_client_destroy. ]*/
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298 | uws_client_destroy(wsio_instance->uws);
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299 | /* Codes_SRS_WSIO_01_081: [ wsio_destroy shall free the list used to track the pending send IOs by calling singlylinkedlist_destroy. ]*/
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300 | singlylinkedlist_destroy(wsio_instance->pending_io_list);
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301 | free(ws_io);
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302 | }
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303 | }
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304 |
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305 | static void on_underlying_ws_open_complete(void* context, WS_OPEN_RESULT open_result)
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306 | {
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307 | if (context == NULL)
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308 | {
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309 | /* Codes_SRS_WSIO_01_138: [ When on_underlying_ws_open_complete is called with a NULL context, it shall do nothing. ]*/
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310 | LogError("NULL context in on_underlying_ws_open_complete");
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311 | }
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312 | else
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313 | {
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314 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)context;
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315 |
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316 | switch (wsio_instance->io_state)
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317 | {
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318 | default:
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319 | /* Codes_SRS_WSIO_01_142: [ When on_underlying_ws_open_complete is called while in the CLOSING state an error shall be indicated by calling the on_io_error callback passed to wsio_open. ]*/
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320 | case IO_STATE_CLOSING:
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321 | /* Codes_SRS_WSIO_01_141: [ When on_underlying_ws_open_complete is called while in the ERROR state it shall indicate an error by calling the on_io_error callback passed to wsio_open. ]*/
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322 | case IO_STATE_ERROR:
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323 | /* Codes_SRS_WSIO_01_139: [ When on_underlying_ws_open_complete is called while in OPEN state it shall indicate an error by calling the on_io_error callback passed to wsio_open and switch to the ERROR state. ]*/
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324 | case IO_STATE_OPEN:
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325 | /* Codes_SRS_WSIO_01_140: [ When calling on_io_error, the on_io_error_context argument given in wsio_open shall be passed to the callback on_io_error. ]*/
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326 | indicate_error(wsio_instance);
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327 | break;
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328 |
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329 | case IO_STATE_OPENING:
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330 | wsio_instance->io_state = IO_STATE_OPEN;
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331 |
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332 | switch (open_result)
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333 | {
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334 | default:
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335 | /* Codes_SRS_WSIO_01_137: [ When on_underlying_ws_open_complete is called with any other error code while the IO is opening, the callback on_io_open_complete shall be called with IO_OPEN_ERROR. ]*/
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336 | wsio_instance->io_state = IO_STATE_NOT_OPEN;
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337 | indicate_open_complete(wsio_instance, IO_OPEN_ERROR);
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338 | break;
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339 |
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340 | case WS_OPEN_CANCELLED:
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341 | /* Codes_SRS_WSIO_01_149: [ When on_underlying_ws_open_complete is called with WS_OPEN_CANCELLED while the IO is opening, the callback on_io_open_complete shall be called with IO_OPEN_CANCELLED. ]*/
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342 | wsio_instance->io_state = IO_STATE_NOT_OPEN;
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343 | indicate_open_complete(wsio_instance, IO_OPEN_CANCELLED);
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344 | break;
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345 |
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346 | case WS_OPEN_OK:
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347 | /* Codes_SRS_WSIO_01_136: [ When on_underlying_ws_open_complete is called with WS_OPEN_OK while the IO is opening, the callback on_io_open_complete shall be called with IO_OPEN_OK. ]*/
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348 | wsio_instance->io_state = IO_STATE_OPEN;
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349 | indicate_open_complete(wsio_instance, IO_OPEN_OK);
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350 | break;
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351 | }
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352 |
|
---|
353 | break;
|
---|
354 | }
|
---|
355 | }
|
---|
356 | }
|
---|
357 |
|
---|
358 | static void on_underlying_ws_frame_received(void* context, unsigned char frame_type, const unsigned char* buffer, size_t size)
|
---|
359 | {
|
---|
360 | if (context == NULL)
|
---|
361 | {
|
---|
362 | /* Codes_SRS_WSIO_01_150: [ If on_underlying_ws_frame_received is called with NULL context it shall do nothing. ]*/
|
---|
363 | LogError("NULL context for on_underlying_ws_frame_received");
|
---|
364 | }
|
---|
365 | else
|
---|
366 | {
|
---|
367 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)context;
|
---|
368 |
|
---|
369 | if (wsio_instance->io_state != IO_STATE_OPEN)
|
---|
370 | {
|
---|
371 | /* Codes_SRS_WSIO_01_126: [ If on_underlying_ws_frame_received is called while the IO is in any state other than OPEN, it shall do nothing. ]*/
|
---|
372 | LogError("on_underlying_ws_frame_received called in a bad state.");
|
---|
373 | }
|
---|
374 | else
|
---|
375 | {
|
---|
376 | if (frame_type != WS_FRAME_TYPE_BINARY)
|
---|
377 | {
|
---|
378 | /* Codes_SRS_WSIO_01_151: [ If the WebSocket frame type is not binary then an error shall be indicated by calling the on_io_error callback passed to wsio_open. ]*/
|
---|
379 | LogError("Invalid non binary WebSocket frame received.");
|
---|
380 | /* Codes_SRS_WSIO_01_152: [ When calling on_io_error, the on_io_error_context argument given in wsio_open shall be passed to the callback on_io_error. ]*/
|
---|
381 | indicate_error(wsio_instance);
|
---|
382 | }
|
---|
383 | else
|
---|
384 | {
|
---|
385 | /* Codes_SRS_WSIO_01_153: [ When on_underlying_ws_frame_received is called with zero size, no bytes shall be indicated up as received. ]*/
|
---|
386 | if (size > 0)
|
---|
387 | {
|
---|
388 | if (buffer == NULL)
|
---|
389 | {
|
---|
390 | /* Codes_SRS_WSIO_01_154: [ When on_underlying_ws_frame_received is called with a positive size and a NULL buffer, an error shall be indicated by calling the on_io_error callback passed to wsio_open. ]*/
|
---|
391 | LogError("NULL buffer received for Websocket frame with positive payload length.");
|
---|
392 | indicate_error(wsio_instance);
|
---|
393 | }
|
---|
394 | else
|
---|
395 | {
|
---|
396 | /* Codes_SRS_WSIO_01_124: [ When on_underlying_ws_frame_received is called the bytes in the frame shall be indicated by calling the on_bytes_received callback passed to wsio_open. ]*/
|
---|
397 | /* Codes_SRS_WSIO_01_125: [ When calling on_bytes_received, the on_bytes_received_context argument given in wsio_open shall be passed to the callback on_bytes_received. ]*/
|
---|
398 | wsio_instance->on_bytes_received(wsio_instance->on_bytes_received_context, buffer, size);
|
---|
399 | }
|
---|
400 | }
|
---|
401 | }
|
---|
402 | }
|
---|
403 | }
|
---|
404 | }
|
---|
405 |
|
---|
406 | static void on_underlying_ws_peer_closed(void* context, uint16_t* close_code, const unsigned char* extra_data, size_t extra_data_length)
|
---|
407 | {
|
---|
408 | /* Codes_SRS_WSIO_01_168: [ The close_code, extra_data and extra_data_length arguments shall be ignored. ]*/
|
---|
409 | (void)close_code;
|
---|
410 | (void)extra_data;
|
---|
411 | (void)extra_data_length;
|
---|
412 |
|
---|
413 | if (context == NULL)
|
---|
414 | {
|
---|
415 | /* Codes_SRS_WSIO_01_167: [ If on_underlying_ws_peer_closed is called with a NULL context it shall do nothing. ]*/
|
---|
416 | LogError("NULL context for on_underlying_ws_peer_closed");
|
---|
417 | }
|
---|
418 | else
|
---|
419 | {
|
---|
420 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)context;
|
---|
421 |
|
---|
422 | switch (wsio_instance->io_state)
|
---|
423 | {
|
---|
424 | default:
|
---|
425 | /* Codes_SRS_WSIO_01_166: [ When on_underlying_ws_peer_closed and the state of the IO is OPEN an error shall be indicated by calling the on_io_error callback passed to wsio_open. ]*/
|
---|
426 | case IO_STATE_OPEN:
|
---|
427 | /* Codes_SRS_WSIO_01_169: [ When on_underlying_ws_peer_closed and the state of the IO is CLOSING an error shall be indicated by calling the on_io_error callback passed to wsio_open. ]*/
|
---|
428 | case IO_STATE_CLOSING:
|
---|
429 | indicate_error(wsio_instance);
|
---|
430 | break;
|
---|
431 |
|
---|
432 | case IO_STATE_NOT_OPEN:
|
---|
433 | // Codes_SRS_WSIO_07_001: [When on_underlying_ws_peer_closed and the state of the IO is NOT_OPEN an error will be raised and the io_state will remain as NOT_OPEN]
|
---|
434 | indicate_error(wsio_instance);
|
---|
435 | wsio_instance->io_state = IO_STATE_NOT_OPEN;
|
---|
436 | break;
|
---|
437 |
|
---|
438 | case IO_STATE_OPENING:
|
---|
439 | /* Codes_SRS_WSIO_01_170: [ When on_underlying_ws_peer_closed and the state of the IO is OPENING an error shall be indicated by calling the on_io_open_complete callback passed to wsio_open with the error code IO_OPEN_ERROR. ]*/
|
---|
440 | wsio_instance->io_state = IO_STATE_NOT_OPEN;
|
---|
441 | indicate_open_complete(wsio_instance, IO_OPEN_ERROR);
|
---|
442 | break;
|
---|
443 | }
|
---|
444 | }
|
---|
445 | }
|
---|
446 |
|
---|
447 | static void on_underlying_ws_error(void* context, WS_ERROR ws_error)
|
---|
448 | {
|
---|
449 | (void)ws_error;
|
---|
450 | /* Don't have much to do with the error here */
|
---|
451 | LogError("on_underlying_ws_error called with error code %d", (int)ws_error);
|
---|
452 |
|
---|
453 | if (context == NULL)
|
---|
454 | {
|
---|
455 | /* Codes_SRS_WSIO_01_135: [ When on_underlying_ws_error is called with a NULL context, it shall do nothing. ]*/
|
---|
456 | LogError("NULL context in on_underlying_ws_error");
|
---|
457 | }
|
---|
458 | else
|
---|
459 | {
|
---|
460 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)context;
|
---|
461 |
|
---|
462 | if (wsio_instance->io_state == IO_STATE_OPENING)
|
---|
463 | {
|
---|
464 | /* Codes_SRS_WSIO_01_123: [ When calling on_io_error, the on_io_error_context argument given in wsio_open shall be passed to the callback on_io_error. ]*/
|
---|
465 | wsio_instance->on_io_open_complete(wsio_instance->on_io_open_complete_context, IO_OPEN_ERROR);
|
---|
466 | wsio_instance->io_state = IO_STATE_NOT_OPEN;
|
---|
467 | }
|
---|
468 | else
|
---|
469 | {
|
---|
470 | /* Codes_SRS_WSIO_01_123: [ When calling on_io_error, the on_io_error_context argument given in wsio_open shall be passed to the callback on_io_error. ]*/
|
---|
471 | wsio_instance->on_io_error(wsio_instance->on_io_error_context);
|
---|
472 | }
|
---|
473 | }
|
---|
474 | }
|
---|
475 |
|
---|
476 | int wsio_open(CONCRETE_IO_HANDLE ws_io, ON_IO_OPEN_COMPLETE on_io_open_complete, void* on_io_open_complete_context, ON_BYTES_RECEIVED on_bytes_received, void* on_bytes_received_context, ON_IO_ERROR on_io_error, void* on_io_error_context)
|
---|
477 | {
|
---|
478 | int result = 0;
|
---|
479 |
|
---|
480 | if ((ws_io == NULL) ||
|
---|
481 | (on_io_open_complete == NULL) ||
|
---|
482 | (on_bytes_received == NULL) ||
|
---|
483 | (on_io_error == NULL))
|
---|
484 | {
|
---|
485 | /* Codes_SRS_WSIO_01_132: [ If any of the arguments ws_io, on_io_open_complete, on_bytes_received, on_io_error is NULL, wsio_open shall fail and return a non-zero value. ]*/
|
---|
486 | LogError("Bad arguments: ws_io=%p, on_io_open_complete=%p, on_bytes_received=%p, on_io_error=%p",
|
---|
487 | ws_io, on_io_open_complete, on_bytes_received, on_io_error);
|
---|
488 | result = MU_FAILURE;
|
---|
489 | }
|
---|
490 | else
|
---|
491 | {
|
---|
492 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)ws_io;
|
---|
493 |
|
---|
494 | if (wsio_instance->io_state != IO_STATE_NOT_OPEN)
|
---|
495 | {
|
---|
496 | /* Codes_SRS_WSIO_01_165: [ wsio_open when CLOSING shall fail and return a non-zero value. ]*/
|
---|
497 | /* Codes_SRS_WSIO_01_131: [ wsio_open when already OPEN or OPENING shall fail and return a non-zero value. ]*/
|
---|
498 | LogError("wsio has already been opened current state: %d", wsio_instance->io_state);
|
---|
499 | result = MU_FAILURE;
|
---|
500 | }
|
---|
501 | else
|
---|
502 | {
|
---|
503 | wsio_instance->on_bytes_received = on_bytes_received;
|
---|
504 | wsio_instance->on_bytes_received_context = on_bytes_received_context;
|
---|
505 | wsio_instance->on_io_open_complete = on_io_open_complete;
|
---|
506 | wsio_instance->on_io_open_complete_context = on_io_open_complete_context;
|
---|
507 | wsio_instance->on_io_error = on_io_error;
|
---|
508 | wsio_instance->on_io_error_context = on_io_error_context;
|
---|
509 |
|
---|
510 | wsio_instance->io_state = IO_STATE_OPENING;
|
---|
511 |
|
---|
512 | /* Codes_SRS_WSIO_01_082: [ wsio_open shall open the underlying uws instance by calling uws_client_open_async and providing the uws handle created in wsio_create as argument. ] */
|
---|
513 | if (uws_client_open_async(wsio_instance->uws, on_underlying_ws_open_complete, wsio_instance, on_underlying_ws_frame_received, wsio_instance, on_underlying_ws_peer_closed, wsio_instance, on_underlying_ws_error, wsio_instance) != 0)
|
---|
514 | {
|
---|
515 | /* Codes_SRS_WSIO_01_084: [ If opening the underlying uws instance fails then wsio_open shall fail and return a non-zero value. ]*/
|
---|
516 | LogError("Opening the uws instance failed.");
|
---|
517 | wsio_instance->io_state = IO_STATE_NOT_OPEN;
|
---|
518 | result = MU_FAILURE;
|
---|
519 | }
|
---|
520 | else
|
---|
521 | {
|
---|
522 | /* Codes_SRS_WSIO_01_083: [ On success, wsio_open shall return 0. ]*/
|
---|
523 | result = 0;
|
---|
524 | }
|
---|
525 | }
|
---|
526 | }
|
---|
527 |
|
---|
528 | return result;
|
---|
529 | }
|
---|
530 |
|
---|
531 | int wsio_close(CONCRETE_IO_HANDLE ws_io, ON_IO_CLOSE_COMPLETE on_io_close_complete, void* on_io_close_complete_context)
|
---|
532 | {
|
---|
533 | int result = 0;
|
---|
534 |
|
---|
535 | if (ws_io == NULL)
|
---|
536 | {
|
---|
537 | /* Codes_SRS_WSIO_01_086: [ if ws_io is NULL, wsio_close shall return a non-zero value. ]*/
|
---|
538 | LogError("NULL handle");
|
---|
539 | result = MU_FAILURE;
|
---|
540 | }
|
---|
541 | else
|
---|
542 | {
|
---|
543 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)ws_io;
|
---|
544 |
|
---|
545 | if (internal_close(wsio_instance, on_io_close_complete, on_io_close_complete_context) != 0)
|
---|
546 | {
|
---|
547 | result = MU_FAILURE;
|
---|
548 | }
|
---|
549 | else
|
---|
550 | {
|
---|
551 | result = 0;
|
---|
552 | }
|
---|
553 | }
|
---|
554 |
|
---|
555 | return result;
|
---|
556 | }
|
---|
557 |
|
---|
558 | int wsio_send(CONCRETE_IO_HANDLE ws_io, const void* buffer, size_t size, ON_SEND_COMPLETE on_send_complete, void* callback_context)
|
---|
559 | {
|
---|
560 | int result;
|
---|
561 |
|
---|
562 | /* Codes_SRS_WSIO_01_100: [ If any of the arguments ws_io or buffer are NULL, wsio_send shall fail and return a non-zero value. ]*/
|
---|
563 | if ((ws_io == NULL) ||
|
---|
564 | (buffer == NULL) ||
|
---|
565 | /* Codes_SRS_WSIO_01_101: [ If size is zero then wsio_send shall fail and return a non-zero value. ]*/
|
---|
566 | (size == 0))
|
---|
567 | {
|
---|
568 | LogError("Bad arguments: ws_io=%p, buffer=%p, size=%u",
|
---|
569 | ws_io, buffer, (unsigned int)size);
|
---|
570 | result = MU_FAILURE;
|
---|
571 | }
|
---|
572 | else
|
---|
573 | {
|
---|
574 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)ws_io;
|
---|
575 |
|
---|
576 | if (wsio_instance->io_state != IO_STATE_OPEN)
|
---|
577 | {
|
---|
578 | /* Codes_SRS_WSIO_01_099: [ If the wsio is not OPEN (open has not been called or is still in progress) then wsio_send shall fail and return a non-zero value. ]*/
|
---|
579 | LogError("Attempting to send when not open");
|
---|
580 | result = MU_FAILURE;
|
---|
581 | }
|
---|
582 | else
|
---|
583 | {
|
---|
584 | LIST_ITEM_HANDLE new_item;
|
---|
585 | PENDING_IO* pending_socket_io = (PENDING_IO*)malloc(sizeof(PENDING_IO));
|
---|
586 | if (pending_socket_io == NULL)
|
---|
587 | {
|
---|
588 | /* Codes_SRS_WSIO_01_134: [ If allocating memory for the pending IO data fails, wsio_send shall fail and return a non-zero value. ]*/
|
---|
589 | result = MU_FAILURE;
|
---|
590 | }
|
---|
591 | else
|
---|
592 | {
|
---|
593 | /* Codes_SRS_WSIO_01_103: [ The entry shall contain the on_send_complete callback and its context. ]*/
|
---|
594 | pending_socket_io->on_send_complete = on_send_complete;
|
---|
595 | pending_socket_io->callback_context = callback_context;
|
---|
596 | pending_socket_io->wsio = wsio_instance;
|
---|
597 |
|
---|
598 | /* Codes_SRS_WSIO_01_102: [ An entry shall be queued in the singly linked list by calling singlylinkedlist_add. ]*/
|
---|
599 | if ((new_item = singlylinkedlist_add(wsio_instance->pending_io_list, pending_socket_io)) == NULL)
|
---|
600 | {
|
---|
601 | /* Codes_SRS_WSIO_01_104: [ If singlylinkedlist_add fails, wsio_send shall fail and return a non-zero value. ]*/
|
---|
602 | free(pending_socket_io);
|
---|
603 | result = MU_FAILURE;
|
---|
604 | }
|
---|
605 | else
|
---|
606 | {
|
---|
607 | /* Codes_SRS_WSIO_01_095: [ wsio_send shall call uws_client_send_frame_async, passing the buffer and size arguments as they are: ]*/
|
---|
608 | /* Codes_SRS_WSIO_01_097: [ The is_final argument shall be set to true. ]*/
|
---|
609 | /* Codes_SRS_WSIO_01_096: [ The frame type used shall be WS_FRAME_TYPE_BINARY. ]*/
|
---|
610 | if (uws_client_send_frame_async(wsio_instance->uws, WS_FRAME_TYPE_BINARY, (const unsigned char*)buffer, size, true, on_underlying_ws_send_frame_complete, new_item) != 0)
|
---|
611 | {
|
---|
612 | if (singlylinkedlist_remove(wsio_instance->pending_io_list, new_item) != 0)
|
---|
613 | {
|
---|
614 | LogError("Failed removing pending IO from linked list.");
|
---|
615 | }
|
---|
616 |
|
---|
617 | free(pending_socket_io);
|
---|
618 | result = MU_FAILURE;
|
---|
619 | }
|
---|
620 | else
|
---|
621 | {
|
---|
622 | /* Codes_SRS_WSIO_01_098: [ On success, wsio_send shall return 0. ]*/
|
---|
623 | result = 0;
|
---|
624 | }
|
---|
625 | }
|
---|
626 | }
|
---|
627 | }
|
---|
628 | }
|
---|
629 |
|
---|
630 | return result;
|
---|
631 | }
|
---|
632 |
|
---|
633 | void wsio_dowork(CONCRETE_IO_HANDLE ws_io)
|
---|
634 | {
|
---|
635 | if (ws_io == NULL)
|
---|
636 | {
|
---|
637 | /* Codes_SRS_WSIO_01_107: [ If the ws_io argument is NULL, wsio_dowork shall do nothing. ]*/
|
---|
638 | LogError("NULL handle");
|
---|
639 | }
|
---|
640 | else
|
---|
641 | {
|
---|
642 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)ws_io;
|
---|
643 |
|
---|
644 | /* Codes_SRS_WSIO_01_108: [ If the IO is not yet open, wsio_dowork shall do nothing. ]*/
|
---|
645 | if (wsio_instance->io_state != IO_STATE_NOT_OPEN)
|
---|
646 | {
|
---|
647 | /* Codes_SRS_WSIO_01_106: [ wsio_dowork shall call uws_client_dowork with the uws handle created in wsio_create. ]*/
|
---|
648 | uws_client_dowork(wsio_instance->uws);
|
---|
649 | }
|
---|
650 | }
|
---|
651 | }
|
---|
652 |
|
---|
653 | int wsio_setoption(CONCRETE_IO_HANDLE ws_io, const char* optionName, const void* value)
|
---|
654 | {
|
---|
655 | int result;
|
---|
656 | if (
|
---|
657 | /* Codes_SRS_WSIO_01_109: [ If any of the arguments ws_io or option_name is NULL wsio_setoption shall return a non-zero value. ]*/
|
---|
658 | (ws_io == NULL) ||
|
---|
659 | (optionName == NULL)
|
---|
660 | )
|
---|
661 | {
|
---|
662 | LogError("Bad parameters: ws_io=%p, optionName=%p",
|
---|
663 | ws_io, optionName);
|
---|
664 | result = MU_FAILURE;
|
---|
665 | }
|
---|
666 | else
|
---|
667 | {
|
---|
668 | WSIO_INSTANCE* wsio_instance = (WSIO_INSTANCE*)ws_io;
|
---|
669 |
|
---|
670 | if (strcmp(WSIO_OPTIONS, optionName) == 0)
|
---|
671 | {
|
---|
672 | /* Codes_SRS_WSIO_01_183: [ If the option name is WSIOOptions then wsio_setoption shall call OptionHandler_FeedOptions and pass to it the underlying IO handle and the value argument. ]*/
|
---|
673 | if (OptionHandler_FeedOptions((OPTIONHANDLER_HANDLE)value, wsio_instance->uws) != OPTIONHANDLER_OK)
|
---|
674 | {
|
---|
675 | /* Codes_SRS_WSIO_01_184: [ If OptionHandler_FeedOptions fails, wsio_setoption shall fail and return a non-zero value. ]*/
|
---|
676 | LogError("unable to OptionHandler_FeedOptions");
|
---|
677 | result = MU_FAILURE;
|
---|
678 | }
|
---|
679 | else
|
---|
680 | {
|
---|
681 | /* Codes_SRS_WSIO_01_158: [ On success, wsio_setoption shall return 0. ]*/
|
---|
682 | result = 0;
|
---|
683 | }
|
---|
684 | }
|
---|
685 | else
|
---|
686 | {
|
---|
687 | /* Codes_SRS_WSIO_01_156: [ Otherwise all options shall be passed as they are to uws by calling uws_client_set_option. ]*/
|
---|
688 | if (uws_client_set_option(wsio_instance->uws, optionName, value) != 0)
|
---|
689 | {
|
---|
690 | /* Codes_SRS_WSIO_01_157: [ If uws_client_set_option fails, wsio_setoption shall fail and return a non-zero value. ]*/
|
---|
691 | LogError("Setting the option %s failed", optionName);
|
---|
692 | result = MU_FAILURE;
|
---|
693 | }
|
---|
694 | else
|
---|
695 | {
|
---|
696 | /* Codes_SRS_WSIO_01_158: [ On success, wsio_setoption shall return 0. ]*/
|
---|
697 | result = 0;
|
---|
698 | }
|
---|
699 | }
|
---|
700 | }
|
---|
701 |
|
---|
702 | return result;
|
---|
703 | }
|
---|
704 |
|
---|
705 | static void* wsio_clone_option(const char* name, const void* value)
|
---|
706 | {
|
---|
707 | void *result;
|
---|
708 |
|
---|
709 | if (
|
---|
710 | (name == NULL) ||
|
---|
711 | (value == NULL)
|
---|
712 | )
|
---|
713 | {
|
---|
714 | /* Codes_SRS_WSIO_01_174: [ If wsio_clone_option is called with NULL name or value it shall return NULL. ]*/
|
---|
715 | LogError("invalid argument detected: const char* name=%p, const void* value=%p", name, value);
|
---|
716 | result = NULL;
|
---|
717 | }
|
---|
718 | else
|
---|
719 | {
|
---|
720 | if (strcmp(name, WSIO_OPTIONS) == 0)
|
---|
721 | {
|
---|
722 | /* Codes_SRS_WSIO_01_171: [** wsio_clone_option called with name being WSIOOptions shall return the same value. ]*/
|
---|
723 | result = (void*)value;
|
---|
724 | }
|
---|
725 | else
|
---|
726 | {
|
---|
727 | /* Codes_SRS_WSIO_01_173: [ wsio_clone_option called with any other option name than WSIOOptions shall return NULL. ]*/
|
---|
728 | LogError("unknown option: %s", name);
|
---|
729 | result = NULL;
|
---|
730 | }
|
---|
731 | }
|
---|
732 |
|
---|
733 | return result;
|
---|
734 | }
|
---|
735 |
|
---|
736 | static void wsio_destroy_option(const char* name, const void* value)
|
---|
737 | {
|
---|
738 | if (
|
---|
739 | (name == NULL) ||
|
---|
740 | (value == NULL)
|
---|
741 | )
|
---|
742 | {
|
---|
743 | /* Codes_SRS_WSIO_01_177: [ If wsio_destroy_option is called with NULL name or value it shall do nothing. ]*/
|
---|
744 | LogError("Bad arguments: const char* name=%p, const void* value=%p", name, value);
|
---|
745 | }
|
---|
746 | else
|
---|
747 | {
|
---|
748 | if (strcmp(name, WSIO_OPTIONS) == 0)
|
---|
749 | {
|
---|
750 | /* Codes_SRS_WSIO_01_175: [ wsio_destroy_option called with the option name being WSIOOptions shall destroy the value by calling OptionHandler_Destroy. ]*/
|
---|
751 | OptionHandler_Destroy((OPTIONHANDLER_HANDLE)value);
|
---|
752 | }
|
---|
753 | else
|
---|
754 | {
|
---|
755 | /* Codes_SRS_WSIO_01_176: [ If wsio_destroy_option is called with any other name it shall do nothing. ]*/
|
---|
756 | LogError("unknown option: %s", name);
|
---|
757 | }
|
---|
758 | }
|
---|
759 | }
|
---|
760 |
|
---|
761 | OPTIONHANDLER_HANDLE wsio_retrieveoptions(CONCRETE_IO_HANDLE handle)
|
---|
762 | {
|
---|
763 | OPTIONHANDLER_HANDLE result;
|
---|
764 | if (handle == NULL)
|
---|
765 | {
|
---|
766 | /* Codes_SRS_WSIO_01_118: [ If parameter handle is NULL then wsio_retrieveoptions shall fail and return NULL. ]*/
|
---|
767 | LogError("parameter handle is NULL");
|
---|
768 | result = NULL;
|
---|
769 | }
|
---|
770 | else
|
---|
771 | {
|
---|
772 | WSIO_INSTANCE* wsio = (WSIO_INSTANCE*)handle;
|
---|
773 |
|
---|
774 | /* Codes_SRS_WSIO_01_119: [ wsio_retrieveoptions shall call OptionHandler_Create to produce an OPTIONHANDLER_HANDLE and on success return the new OPTIONHANDLER_HANDLE handle. ]*/
|
---|
775 | result = OptionHandler_Create(wsio_clone_option, wsio_destroy_option, wsio_setoption);
|
---|
776 | if (result == NULL)
|
---|
777 | {
|
---|
778 | /* Codes_SRS_WSIO_01_120: [ If OptionHandler_Create fails then wsio_retrieveoptions shall fail and return NULL. ]*/
|
---|
779 | LogError("OptionHandler_Create failed");
|
---|
780 | }
|
---|
781 | else
|
---|
782 | {
|
---|
783 | /* Codes_SRS_WSIO_01_179: [ When calling uws_client_retrieve_options the uws client handle shall be passed to it. ]*/
|
---|
784 | /* Codes_SRS_WSIO_01_178: [ uws_client_retrieve_options shall add to the option handler one option, whose name shall be uWSCLientOptions and the value shall be queried by calling uws_client_retrieve_options. ]*/
|
---|
785 | OPTIONHANDLER_HANDLE concreteOptions = uws_client_retrieve_options(wsio->uws);
|
---|
786 | if (concreteOptions == NULL)
|
---|
787 | {
|
---|
788 | /* Codes_SRS_WSIO_01_180: [ If uws_client_retrieve_options fails, uws_client_retrieve_options shall fail and return NULL. ]*/
|
---|
789 | LogError("unable to concrete_io_retrieveoptions");
|
---|
790 | OptionHandler_Destroy(result);
|
---|
791 | result = NULL;
|
---|
792 | }
|
---|
793 | else
|
---|
794 | {
|
---|
795 | /* Codes_SRS_WSIO_01_181: [ Adding the option shall be done by calling OptionHandler_AddOption. ]*/
|
---|
796 | if (OptionHandler_AddOption(result, WSIO_OPTIONS, concreteOptions) != OPTIONHANDLER_OK)
|
---|
797 | {
|
---|
798 | /* Codes_SRS_WSIO_01_182: [ If OptionHandler_AddOption fails, uws_client_retrieve_options shall fail and return NULL. ]*/
|
---|
799 | LogError("unable to OptionHandler_AddOption");
|
---|
800 | OptionHandler_Destroy(concreteOptions);
|
---|
801 | OptionHandler_Destroy(result);
|
---|
802 | result = NULL;
|
---|
803 | }
|
---|
804 | }
|
---|
805 | }
|
---|
806 | }
|
---|
807 |
|
---|
808 | return result;
|
---|
809 | }
|
---|
810 |
|
---|
811 | static const IO_INTERFACE_DESCRIPTION ws_io_interface_description =
|
---|
812 | {
|
---|
813 | wsio_retrieveoptions,
|
---|
814 | wsio_create,
|
---|
815 | wsio_destroy,
|
---|
816 | wsio_open,
|
---|
817 | wsio_close,
|
---|
818 | wsio_send,
|
---|
819 | wsio_dowork,
|
---|
820 | wsio_setoption
|
---|
821 | };
|
---|
822 |
|
---|
823 | const IO_INTERFACE_DESCRIPTION* wsio_get_interface_description(void)
|
---|
824 | {
|
---|
825 | return &ws_io_interface_description;
|
---|
826 | }
|
---|