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annotate seobeo/os/s_linux_edge.c @ 68:70ca1d99f3fd

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Mimicing what tsoding did for his video. Kinda cool.
author June Park <parkjune1995@gmail.com>
date Thu, 25 Dec 2025 20:03:51 -0800
parents a0f0ad5e42eb
children 75de5903355c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include <sys/epoll.h>
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2 #include "seobeo/seobeo.h"
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3
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4
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5 void *Seobeo_Web_Edge_Worker(void *vargs)
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6 {
7
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7 WorkerArgs *args = vargs;
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8 const int max_events = 64;
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c0f6c8c7829f [Seobeo] Linux epoll. Set the client socket to be nonblocking so that it doesn't stop loading when two different threads handle different client calls. I might have problem with socket not being cleaned up properly so need to check that.
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9 struct epoll_event events[max_events];
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10
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11 // Each thread creates its own epoll to avoid race conditions
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12 int epfd = epoll_create1(0);
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13 if (epfd < 0) {
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14 perror("epoll_create1");
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15 return NULL;
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16 }
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17
ea9ef388ab97 [Seobeo] Fixed issues with epoll or kqeue in different threads. Initizlied the event looop inside of the thread itself.
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18 // Add server socket to this thread's epoll
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19 struct epoll_event ev = {
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20 .events = EPOLLIN | EPOLLET,
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21 .data.ptr = args->srv
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22 };
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23 if (epoll_ctl(epfd, EPOLL_CTL_ADD, args->srv->socket, &ev) < 0) {
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24 perror("epoll_ctl ADD server");
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25 close(epfd);
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26 return NULL;
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27 }
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28
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29 while (1) {
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30 int n = epoll_wait(epfd, events, max_events, -1);
36
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31 if (n < 0) {
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32 if (errno == EINTR) continue;
36
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33 perror("epoll_wait");
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34 continue;
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35 }
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36
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37 for (int i = 0; i < n; i++) {
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38 Seobeo_Handle *phandle = events[i].data.ptr;
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c0f6c8c7829f [Seobeo] Linux epoll. Set the client socket to be nonblocking so that it doesn't stop loading when two different threads handle different client calls. I might have problem with socket not being cleaned up properly so need to check that.
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39
36
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40 if (phandle == args->srv) {
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41 // Accept all pending connections (edge-triggered mode)
36
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42 while (1) {
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43 Seobeo_Handle *p_cli_handle = Seobeo_Stream_Handle_Server_Accept(args->srv);
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44 if (!p_cli_handle) break;
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45
36
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46 struct epoll_event client_ev = {
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47 .events = EPOLLIN | EPOLLET,
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48 .data.ptr = p_cli_handle
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49 };
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50 if (epoll_ctl(epfd, EPOLL_CTL_ADD, p_cli_handle->socket, &client_ev) < 0)
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51 {
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52 perror("epoll_ctl ADD client");
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53 Seobeo_Handle_Destroy(p_cli_handle);
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54 }
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55 }
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56 } else {
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57 // Remove from epoll first
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58 epoll_ctl(epfd, EPOLL_CTL_DEL, phandle->socket, NULL);
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59
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60 // Handle request (this function destroys the handle internally)
36
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61 Seobeo_Web_HandleClientRequest(phandle, args->cache);
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62 }
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63 }
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64 }
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65
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66 close(epfd);
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67 return NULL;
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68 }
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69
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70 void Seobeo_Web_Edge(
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71 Seobeo_Handle *p_server_handle,
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72 int thread_count,
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ecb6ee6a22c3 [Misc] I will no longer drink cool aids of capital P.
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73 Dowa_HashMap *p_html_cache)
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74 {
7
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75 pthread_attr_t attr;
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76 pthread_attr_init(&attr);
33
c0f6c8c7829f [Seobeo] Linux epoll. Set the client socket to be nonblocking so that it doesn't stop loading when two different threads handle different client calls. I might have problem with socket not being cleaned up properly so need to check that.
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77 pthread_attr_setstacksize(&attr, 5 * 1024 * 1024); // 5 MB
7
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78
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79 pthread_t threads[thread_count];
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80 for (int i = 0; i < thread_count; i++) {
18
fa2b8af609d9 [Seobeo] Fixed a bug with pathing. Support SSL.
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81 WorkerArgs *args = malloc(sizeof(WorkerArgs));
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82 *args = (WorkerArgs){ p_server_handle, p_html_cache };
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83
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84 pthread_create(&threads[i], &attr, Seobeo_Web_Edge_Worker, args);
7
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85 }
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86
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87 // Join threads instead of detaching for proper cleanup
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88 for (int i = 0; i < thread_count; i++) {
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89 pthread_join(threads[i], NULL);
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90 }
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91
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92 pthread_attr_destroy(&attr);
36
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93 }
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94
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95
66
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96 void Seobeo_Web_Edge_2(Seobeo_Handle *p_handle_server, Dowa_HashMap *cache)
62
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97 {
36
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98 const int MAX_EVENTS = 1024;
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99 struct epoll_event events[MAX_EVENTS];
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100 char keybuf[32];
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101
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102 int epfd = epoll_create1(0);
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103 if (epfd < 0)
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104 {
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105 perror("epoll_create1");
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106 return;
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107 }
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108
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109 struct epoll_event ev = {
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110 .events = EPOLLIN | EPOLLET,
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111 .data.fd = p_handle_server->socket
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112 };
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113 if (epoll_ctl(epfd, EPOLL_CTL_ADD, p_handle_server->socket, &ev) < 0)
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114 {
36
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115 perror("epoll_ctl ADD server");
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116 close(epfd);
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117 return;
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118 }
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119
65
ecb6ee6a22c3 [Misc] I will no longer drink cool aids of capital P.
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120 Dowa_HashMap *handles = Dowa_HashMap_Create(1024);
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121 snprintf(keybuf, sizeof(keybuf), "%d", p_handle_server->socket);
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122 Dowa_HashMap_Push_Value(handles, keybuf, p_handle_server, sizeof(p_handle_server));
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123
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124 while (1) {
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125 int n = epoll_wait(epfd, events, MAX_EVENTS, -1);
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126 if (n < 0)
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127 {
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128 if (errno == EINTR) continue;
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129 perror("epoll_wait");
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130 break;
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131 }
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132
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133 for (int i = 0; i < n; i++)
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134 {
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135 int fd = events[i].data.fd;
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136
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137 if (fd == p_handle_server->socket)
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138 {
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139 while (1)
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140 {
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141 Seobeo_Handle *p_handle_client = Seobeo_Stream_Handle_Server_Accept(p_handle_server);
36
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142 if (!p_handle_client) break;
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143
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144 struct epoll_event client_ev = {
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145 .events = EPOLLIN | EPOLLET,
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146 .data.fd = p_handle_client->socket
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147 };
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148 if (epoll_ctl(epfd, EPOLL_CTL_ADD, p_handle_client->socket, &client_ev) < 0)
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149 {
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150 perror("epoll_ctl ADD client");
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151 Seobeo_Handle_Destroy(p_handle_client);
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152 continue;
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153 }
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154
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155 snprintf(keybuf, sizeof(keybuf), "%d", p_handle_client->socket);
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156 if (p_handle_client)
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157 Dowa_HashMap_Push_Value_With_Type_NoCopy(handles, keybuf, p_handle_client,
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diff changeset
158 sizeof(p_handle_client), DOWA_HASH_MAP_TYPE_HASHMAP);
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159 }
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160 continue;
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161 }
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162
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163 snprintf(keybuf, sizeof(keybuf), "%d", fd);
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164 Seobeo_Handle *p_handle_client = Dowa_HashMap_Get(handles, keybuf);
36
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165 if (!p_handle_client)
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166 {
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167 // might happen if client closed between event and lookup
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diff changeset
168 epoll_ctl(epfd, EPOLL_CTL_DEL, fd, NULL);
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169 continue;
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170 }
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171
62
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172 // Remove from epoll
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diff changeset
173 epoll_ctl(epfd, EPOLL_CTL_DEL, fd, NULL);
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174
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175 // Handle request (this function destroys the handle internally)
36
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diff changeset
176 Seobeo_Web_HandleClientRequest(p_handle_client, cache);
62
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177
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diff changeset
178 // Remove from hashmap (handle is already destroyed by HandleClientRequest)
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diff changeset
179 Dowa_HashMap_Pop_Key(handles, keybuf);
36
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180 }
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181 }
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diff changeset
182
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diff changeset
183 close(epfd);
62
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diff changeset
184 Dowa_HashMap_Destroy(handles);
7
114cad94008f [Seobeo] Updated to support thread and edge server calls.
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185 }
36
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diff changeset
186