Mercurial > hg > nginx-quic
annotate src/event/ngx_event_udp.c @ 8350:6bb924b00e30 quic
HTTP/3: fixed server push.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Wed, 10 Mar 2021 17:56:34 +0300 |
parents | 45db1b5c1706 |
children | d62a16fff3a4 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Roman Arutyunyan |
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4 * Copyright (C) Nginx, Inc. |
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
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11 |
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12 |
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13 #if !(NGX_WIN32) |
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14 |
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15 static void ngx_close_accepted_udp_connection(ngx_connection_t *c); |
7286 | 16 static ssize_t ngx_udp_shared_recv(ngx_connection_t *c, u_char *buf, |
17 size_t size); | |
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18 static ngx_int_t ngx_create_udp_connection(ngx_connection_t *c); |
7286 | 19 static ngx_connection_t *ngx_lookup_udp_connection(ngx_listening_t *ls, |
8198
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20 ngx_str_t *key, struct sockaddr *sockaddr, socklen_t socklen, |
7286 | 21 struct sockaddr *local_sockaddr, socklen_t local_socklen); |
7285
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22 |
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23 |
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24 void |
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25 ngx_event_recvmsg(ngx_event_t *ev) |
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26 { |
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27 ssize_t n; |
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28 ngx_str_t key; |
7286 | 29 ngx_buf_t buf; |
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30 ngx_log_t *log; |
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31 ngx_err_t err; |
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32 socklen_t socklen, local_socklen; |
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33 ngx_event_t *rev, *wev; |
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34 struct iovec iov[1]; |
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35 struct msghdr msg; |
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36 ngx_sockaddr_t sa, lsa; |
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37 struct sockaddr *sockaddr, *local_sockaddr; |
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38 ngx_listening_t *ls; |
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39 ngx_event_conf_t *ecf; |
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40 ngx_connection_t *c, *lc; |
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41 static u_char buffer[65535]; |
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42 |
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43 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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44 |
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45 #if (NGX_HAVE_IP_RECVDSTADDR) |
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46 u_char msg_control[CMSG_SPACE(sizeof(struct in_addr))]; |
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47 #elif (NGX_HAVE_IP_PKTINFO) |
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48 u_char msg_control[CMSG_SPACE(sizeof(struct in_pktinfo))]; |
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49 #endif |
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50 |
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51 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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52 u_char msg_control6[CMSG_SPACE(sizeof(struct in6_pktinfo))]; |
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53 #endif |
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54 |
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55 #endif |
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56 |
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57 if (ev->timedout) { |
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58 if (ngx_enable_accept_events((ngx_cycle_t *) ngx_cycle) != NGX_OK) { |
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59 return; |
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60 } |
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61 |
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62 ev->timedout = 0; |
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63 } |
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64 |
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65 ecf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_event_core_module); |
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66 |
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67 if (!(ngx_event_flags & NGX_USE_KQUEUE_EVENT)) { |
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68 ev->available = ecf->multi_accept; |
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69 } |
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70 |
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71 lc = ev->data; |
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72 ls = lc->listening; |
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73 ev->ready = 0; |
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74 |
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75 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
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76 "recvmsg on %V, ready: %d", &ls->addr_text, ev->available); |
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77 |
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78 do { |
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79 ngx_memzero(&msg, sizeof(struct msghdr)); |
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80 |
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81 iov[0].iov_base = (void *) buffer; |
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82 iov[0].iov_len = sizeof(buffer); |
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83 |
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84 msg.msg_name = &sa; |
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85 msg.msg_namelen = sizeof(ngx_sockaddr_t); |
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86 msg.msg_iov = iov; |
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87 msg.msg_iovlen = 1; |
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88 |
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89 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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90 |
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91 if (ls->wildcard) { |
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92 |
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93 #if (NGX_HAVE_IP_RECVDSTADDR || NGX_HAVE_IP_PKTINFO) |
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94 if (ls->sockaddr->sa_family == AF_INET) { |
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95 msg.msg_control = &msg_control; |
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96 msg.msg_controllen = sizeof(msg_control); |
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97 } |
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98 #endif |
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99 |
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100 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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101 if (ls->sockaddr->sa_family == AF_INET6) { |
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102 msg.msg_control = &msg_control6; |
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103 msg.msg_controllen = sizeof(msg_control6); |
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104 } |
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105 #endif |
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106 } |
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107 |
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108 #endif |
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109 |
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110 n = recvmsg(lc->fd, &msg, 0); |
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111 |
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112 if (n == -1) { |
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113 err = ngx_socket_errno; |
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114 |
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115 if (err == NGX_EAGAIN) { |
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116 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, err, |
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117 "recvmsg() not ready"); |
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118 return; |
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119 } |
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120 |
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121 ngx_log_error(NGX_LOG_ALERT, ev->log, err, "recvmsg() failed"); |
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122 |
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123 return; |
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124 } |
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125 |
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126 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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127 if (msg.msg_flags & (MSG_TRUNC|MSG_CTRUNC)) { |
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128 ngx_log_error(NGX_LOG_ALERT, ev->log, 0, |
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129 "recvmsg() truncated data"); |
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130 continue; |
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131 } |
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132 #endif |
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133 |
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134 sockaddr = msg.msg_name; |
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135 socklen = msg.msg_namelen; |
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136 |
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137 if (socklen > (socklen_t) sizeof(ngx_sockaddr_t)) { |
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138 socklen = sizeof(ngx_sockaddr_t); |
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139 } |
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140 |
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141 if (socklen == 0) { |
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142 |
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143 /* |
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144 * on Linux recvmsg() returns zero msg_namelen |
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145 * when receiving packets from unbound AF_UNIX sockets |
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146 */ |
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147 |
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148 socklen = sizeof(struct sockaddr); |
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149 ngx_memzero(&sa, sizeof(struct sockaddr)); |
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150 sa.sockaddr.sa_family = ls->sockaddr->sa_family; |
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151 } |
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152 |
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153 local_sockaddr = ls->sockaddr; |
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154 local_socklen = ls->socklen; |
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155 |
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156 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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157 |
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158 if (ls->wildcard) { |
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159 struct cmsghdr *cmsg; |
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160 |
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161 ngx_memcpy(&lsa, local_sockaddr, local_socklen); |
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162 local_sockaddr = &lsa.sockaddr; |
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163 |
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164 for (cmsg = CMSG_FIRSTHDR(&msg); |
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165 cmsg != NULL; |
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166 cmsg = CMSG_NXTHDR(&msg, cmsg)) |
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167 { |
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168 |
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169 #if (NGX_HAVE_IP_RECVDSTADDR) |
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170 |
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171 if (cmsg->cmsg_level == IPPROTO_IP |
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172 && cmsg->cmsg_type == IP_RECVDSTADDR |
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173 && local_sockaddr->sa_family == AF_INET) |
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174 { |
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175 struct in_addr *addr; |
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176 struct sockaddr_in *sin; |
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177 |
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178 addr = (struct in_addr *) CMSG_DATA(cmsg); |
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179 sin = (struct sockaddr_in *) local_sockaddr; |
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180 sin->sin_addr = *addr; |
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181 |
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182 break; |
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183 } |
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184 |
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185 #elif (NGX_HAVE_IP_PKTINFO) |
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186 |
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187 if (cmsg->cmsg_level == IPPROTO_IP |
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188 && cmsg->cmsg_type == IP_PKTINFO |
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189 && local_sockaddr->sa_family == AF_INET) |
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190 { |
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191 struct in_pktinfo *pkt; |
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192 struct sockaddr_in *sin; |
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193 |
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194 pkt = (struct in_pktinfo *) CMSG_DATA(cmsg); |
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195 sin = (struct sockaddr_in *) local_sockaddr; |
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196 sin->sin_addr = pkt->ipi_addr; |
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197 |
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198 break; |
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199 } |
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200 |
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201 #endif |
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202 |
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203 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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204 |
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205 if (cmsg->cmsg_level == IPPROTO_IPV6 |
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206 && cmsg->cmsg_type == IPV6_PKTINFO |
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207 && local_sockaddr->sa_family == AF_INET6) |
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208 { |
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209 struct in6_pktinfo *pkt6; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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210 struct sockaddr_in6 *sin6; |
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211 |
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212 pkt6 = (struct in6_pktinfo *) CMSG_DATA(cmsg); |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
213 sin6 = (struct sockaddr_in6 *) local_sockaddr; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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214 sin6->sin6_addr = pkt6->ipi6_addr; |
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215 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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216 break; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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217 } |
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218 |
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219 #endif |
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220 |
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221 } |
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222 } |
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223 |
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224 #endif |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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changeset
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225 |
8198
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
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|
226 ngx_str_null(&key); |
45db1b5c1706
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227 |
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diff
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|
228 #if (NGX_QUIC) |
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|
229 if (ls->quic) { |
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230 if (ngx_quic_get_packet_dcid(ev->log, buffer, n, &key) != NGX_OK) { |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
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|
231 goto next; |
45db1b5c1706
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diff
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|
232 } |
45db1b5c1706
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|
233 } |
45db1b5c1706
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|
234 #endif |
45db1b5c1706
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235 |
45db1b5c1706
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236 c = ngx_lookup_udp_connection(ls, &key, sockaddr, socklen, |
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237 local_sockaddr, local_socklen); |
7286 | 238 |
239 if (c) { | |
240 | |
241 #if (NGX_DEBUG) | |
242 if (c->log->log_level & NGX_LOG_DEBUG_EVENT) { | |
243 ngx_log_handler_pt handler; | |
244 | |
245 handler = c->log->handler; | |
246 c->log->handler = NULL; | |
247 | |
248 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
249 "recvmsg: fd:%d n:%z", c->fd, n); | |
250 | |
251 c->log->handler = handler; | |
252 } | |
253 #endif | |
254 | |
255 ngx_memzero(&buf, sizeof(ngx_buf_t)); | |
256 | |
257 buf.pos = buffer; | |
258 buf.last = buffer + n; | |
259 | |
260 rev = c->read; | |
261 | |
262 c->udp->buffer = &buf; | |
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6d4bc025c5a7
Prevented scheduling events on a shared connection.
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7393
diff
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263 |
7286 | 264 rev->ready = 1; |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
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265 rev->active = 0; |
7286 | 266 |
267 rev->handler(rev); | |
268 | |
7391
27559d4a5151
Stream: fixed possible use of a freed connection.
Vladimir Homutov <vl@nginx.com>
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7286
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269 if (c->udp) { |
27559d4a5151
Stream: fixed possible use of a freed connection.
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270 c->udp->buffer = NULL; |
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Stream: fixed possible use of a freed connection.
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271 } |
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272 |
7286 | 273 rev->ready = 0; |
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Prevented scheduling events on a shared connection.
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|
274 rev->active = 1; |
7286 | 275 |
276 goto next; | |
277 } | |
278 | |
7285
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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279 #if (NGX_STAT_STUB) |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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280 (void) ngx_atomic_fetch_add(ngx_stat_accepted, 1); |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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281 #endif |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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282 |
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283 ngx_accept_disabled = ngx_cycle->connection_n / 8 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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284 - ngx_cycle->free_connection_n; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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285 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
286 c = ngx_get_connection(lc->fd, ev->log); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
287 if (c == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
288 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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289 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
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290 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
291 c->shared = 1; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
292 c->type = SOCK_DGRAM; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
293 c->socklen = socklen; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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294 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
295 #if (NGX_STAT_STUB) |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
296 (void) ngx_atomic_fetch_add(ngx_stat_active, 1); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
297 #endif |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
298 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
299 c->pool = ngx_create_pool(ls->pool_size, ev->log); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
300 if (c->pool == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
301 ngx_close_accepted_udp_connection(c); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
302 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
303 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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|
304 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
305 c->sockaddr = ngx_palloc(c->pool, socklen); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
306 if (c->sockaddr == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
307 ngx_close_accepted_udp_connection(c); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
308 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
309 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
310 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
311 ngx_memcpy(c->sockaddr, sockaddr, socklen); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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312 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
313 log = ngx_palloc(c->pool, sizeof(ngx_log_t)); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
314 if (log == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
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changeset
|
315 ngx_close_accepted_udp_connection(c); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
316 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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|
317 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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|
318 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
319 *log = ls->log; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
320 |
7286 | 321 c->recv = ngx_udp_shared_recv; |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
322 c->send = ngx_udp_send; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
323 c->send_chain = ngx_udp_send_chain; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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|
324 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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changeset
|
325 c->log = log; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
326 c->pool->log = log; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
327 c->listening = ls; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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|
328 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
329 if (local_sockaddr == &lsa.sockaddr) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
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changeset
|
330 local_sockaddr = ngx_palloc(c->pool, local_socklen); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
331 if (local_sockaddr == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
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changeset
|
332 ngx_close_accepted_udp_connection(c); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
333 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
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|
334 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
335 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
336 ngx_memcpy(local_sockaddr, &lsa, local_socklen); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
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changeset
|
337 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
338 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
339 c->local_sockaddr = local_sockaddr; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
340 c->local_socklen = local_socklen; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
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changeset
|
341 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
342 c->buffer = ngx_create_temp_buf(c->pool, n); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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|
343 if (c->buffer == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
344 ngx_close_accepted_udp_connection(c); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
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|
345 return; |
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346 } |
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347 |
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348 c->buffer->last = ngx_cpymem(c->buffer->last, buffer, n); |
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349 |
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350 rev = c->read; |
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351 wev = c->write; |
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352 |
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353 rev->active = 1; |
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354 wev->ready = 1; |
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355 |
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356 rev->log = log; |
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357 wev->log = log; |
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358 |
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359 /* |
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360 * TODO: MT: - ngx_atomic_fetch_add() |
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361 * or protection by critical section or light mutex |
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362 * |
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363 * TODO: MP: - allocated in a shared memory |
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364 * - ngx_atomic_fetch_add() |
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365 * or protection by critical section or light mutex |
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366 */ |
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367 |
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368 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); |
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369 |
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370 #if (NGX_STAT_STUB) |
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371 (void) ngx_atomic_fetch_add(ngx_stat_handled, 1); |
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372 #endif |
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373 |
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374 if (ls->addr_ntop) { |
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375 c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len); |
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376 if (c->addr_text.data == NULL) { |
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377 ngx_close_accepted_udp_connection(c); |
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378 return; |
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379 } |
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380 |
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381 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, |
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382 c->addr_text.data, |
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383 ls->addr_text_max_len, 0); |
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384 if (c->addr_text.len == 0) { |
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385 ngx_close_accepted_udp_connection(c); |
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386 return; |
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387 } |
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388 } |
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389 |
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390 #if (NGX_DEBUG) |
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391 { |
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392 ngx_str_t addr; |
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393 u_char text[NGX_SOCKADDR_STRLEN]; |
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394 |
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395 ngx_debug_accepted_connection(ecf, c); |
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396 |
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397 if (log->log_level & NGX_LOG_DEBUG_EVENT) { |
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398 addr.data = text; |
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399 addr.len = ngx_sock_ntop(c->sockaddr, c->socklen, text, |
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400 NGX_SOCKADDR_STRLEN, 1); |
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401 |
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402 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, log, 0, |
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403 "*%uA recvmsg: %V fd:%d n:%z", |
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404 c->number, &addr, c->fd, n); |
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405 } |
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406 |
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407 } |
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408 #endif |
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409 |
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410 if (ngx_create_udp_connection(c) != NGX_OK) { |
7286 | 411 ngx_close_accepted_udp_connection(c); |
412 return; | |
413 } | |
414 | |
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415 log->data = NULL; |
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416 log->handler = NULL; |
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417 |
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418 ls->handler(c); |
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419 |
7286 | 420 next: |
421 | |
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422 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
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423 ev->available -= n; |
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424 } |
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425 |
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426 } while (ev->available); |
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427 } |
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428 |
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429 |
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430 static void |
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431 ngx_close_accepted_udp_connection(ngx_connection_t *c) |
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432 { |
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433 ngx_free_connection(c); |
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434 |
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435 c->fd = (ngx_socket_t) -1; |
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436 |
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437 if (c->pool) { |
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438 ngx_destroy_pool(c->pool); |
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439 } |
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440 |
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441 #if (NGX_STAT_STUB) |
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442 (void) ngx_atomic_fetch_add(ngx_stat_active, -1); |
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443 #endif |
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444 } |
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445 |
7286 | 446 |
447 static ssize_t | |
448 ngx_udp_shared_recv(ngx_connection_t *c, u_char *buf, size_t size) | |
449 { | |
450 ssize_t n; | |
451 ngx_buf_t *b; | |
452 | |
453 if (c->udp == NULL || c->udp->buffer == NULL) { | |
454 return NGX_AGAIN; | |
455 } | |
456 | |
457 b = c->udp->buffer; | |
458 | |
459 n = ngx_min(b->last - b->pos, (ssize_t) size); | |
460 | |
461 ngx_memcpy(buf, b->pos, n); | |
462 | |
463 c->udp->buffer = NULL; | |
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464 |
7286 | 465 c->read->ready = 0; |
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466 c->read->active = 1; |
7286 | 467 |
468 return n; | |
469 } | |
470 | |
471 | |
472 void | |
473 ngx_udp_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
474 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
475 { | |
476 ngx_int_t rc; | |
477 ngx_connection_t *c, *ct; | |
478 ngx_rbtree_node_t **p; | |
479 ngx_udp_connection_t *udp, *udpt; | |
480 | |
481 for ( ;; ) { | |
482 | |
483 if (node->key < temp->key) { | |
484 | |
485 p = &temp->left; | |
486 | |
487 } else if (node->key > temp->key) { | |
488 | |
489 p = &temp->right; | |
490 | |
491 } else { /* node->key == temp->key */ | |
492 | |
493 udp = (ngx_udp_connection_t *) node; | |
494 c = udp->connection; | |
495 | |
496 udpt = (ngx_udp_connection_t *) temp; | |
497 ct = udpt->connection; | |
498 | |
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499 rc = ngx_memn2cmp(udp->key.data, udpt->key.data, |
45db1b5c1706
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|
500 udp->key.len, udpt->key.len); |
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501 |
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diff
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|
502 if (rc == 0 && udp->key.len == 0) { |
45db1b5c1706
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diff
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|
503 rc = ngx_cmp_sockaddr(c->sockaddr, c->socklen, |
45db1b5c1706
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diff
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504 ct->sockaddr, ct->socklen, 1); |
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|
505 } |
7286 | 506 |
507 if (rc == 0 && c->listening->wildcard) { | |
508 rc = ngx_cmp_sockaddr(c->local_sockaddr, c->local_socklen, | |
509 ct->local_sockaddr, ct->local_socklen, 1); | |
510 } | |
511 | |
512 p = (rc < 0) ? &temp->left : &temp->right; | |
513 } | |
514 | |
515 if (*p == sentinel) { | |
516 break; | |
517 } | |
518 | |
519 temp = *p; | |
520 } | |
521 | |
522 *p = node; | |
523 node->parent = temp; | |
524 node->left = sentinel; | |
525 node->right = sentinel; | |
526 ngx_rbt_red(node); | |
527 } | |
528 | |
529 | |
530 static ngx_int_t | |
8198
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|
531 ngx_create_udp_connection(ngx_connection_t *c) |
7286 | 532 { |
8198
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|
533 ngx_str_t key; |
7286 | 534 ngx_pool_cleanup_t *cln; |
535 ngx_udp_connection_t *udp; | |
536 | |
8198
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|
537 #if (NGX_QUIC) |
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diff
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|
538 if (c->listening->quic) { |
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539 return NGX_OK; |
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|
540 } |
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|
541 #endif |
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|
542 |
7286 | 543 if (c->udp) { |
544 return NGX_OK; | |
545 } | |
546 | |
547 udp = ngx_pcalloc(c->pool, sizeof(ngx_udp_connection_t)); | |
548 if (udp == NULL) { | |
549 return NGX_ERROR; | |
550 } | |
551 | |
552 cln = ngx_pool_cleanup_add(c->pool, 0); | |
553 if (cln == NULL) { | |
554 return NGX_ERROR; | |
555 } | |
556 | |
557 cln->data = c; | |
558 cln->handler = ngx_delete_udp_connection; | |
559 | |
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560 key.len = 0; |
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561 |
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562 ngx_insert_udp_connection(c, udp, &key); |
7286 | 563 |
564 c->udp = udp; | |
565 | |
566 return NGX_OK; | |
567 } | |
568 | |
569 | |
7393
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570 void |
8198
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571 ngx_insert_udp_connection(ngx_connection_t *c, ngx_udp_connection_t *udp, |
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572 ngx_str_t *key) |
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573 { |
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574 uint32_t hash; |
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575 |
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576 ngx_crc32_init(hash); |
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577 |
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578 ngx_crc32_update(&hash, key->data, key->len); |
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579 |
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580 if (key->len == 0) { |
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581 ngx_crc32_update(&hash, (u_char *) c->sockaddr, c->socklen); |
45db1b5c1706
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|
582 } |
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|
583 |
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|
584 if (c->listening->wildcard) { |
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585 ngx_crc32_update(&hash, (u_char *) c->local_sockaddr, c->local_socklen); |
45db1b5c1706
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|
586 } |
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|
587 |
45db1b5c1706
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|
588 ngx_crc32_final(hash); |
45db1b5c1706
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|
589 |
45db1b5c1706
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|
590 udp->connection = c; |
45db1b5c1706
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|
591 udp->key = *key; |
45db1b5c1706
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diff
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|
592 udp->node.key = hash; |
45db1b5c1706
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|
593 |
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|
594 ngx_rbtree_insert(&c->listening->rbtree, &udp->node); |
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|
595 } |
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|
596 |
45db1b5c1706
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|
597 |
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|
598 void |
7286 | 599 ngx_delete_udp_connection(void *data) |
600 { | |
601 ngx_connection_t *c = data; | |
602 | |
7393
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Stream: proxy_requests directive.
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|
603 if (c->udp == NULL) { |
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Stream: proxy_requests directive.
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|
604 return; |
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Stream: proxy_requests directive.
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diff
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|
605 } |
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
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diff
changeset
|
606 |
7286 | 607 ngx_rbtree_delete(&c->listening->rbtree, &c->udp->node); |
7391
27559d4a5151
Stream: fixed possible use of a freed connection.
Vladimir Homutov <vl@nginx.com>
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7286
diff
changeset
|
608 |
27559d4a5151
Stream: fixed possible use of a freed connection.
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7286
diff
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|
609 c->udp = NULL; |
7286 | 610 } |
611 | |
612 | |
613 static ngx_connection_t * | |
8198
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|
614 ngx_lookup_udp_connection(ngx_listening_t *ls, ngx_str_t *key, |
45db1b5c1706
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|
615 struct sockaddr *sockaddr, socklen_t socklen, |
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|
616 struct sockaddr *local_sockaddr, socklen_t local_socklen) |
7286 | 617 { |
618 uint32_t hash; | |
619 ngx_int_t rc; | |
620 ngx_connection_t *c; | |
621 ngx_rbtree_node_t *node, *sentinel; | |
622 ngx_udp_connection_t *udp; | |
623 | |
624 #if (NGX_HAVE_UNIX_DOMAIN) | |
625 | |
626 if (sockaddr->sa_family == AF_UNIX) { | |
627 struct sockaddr_un *saun = (struct sockaddr_un *) sockaddr; | |
628 | |
629 if (socklen <= (socklen_t) offsetof(struct sockaddr_un, sun_path) | |
630 || saun->sun_path[0] == '\0') | |
631 { | |
632 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, | |
633 "unbound unix socket"); | |
634 return NULL; | |
635 } | |
636 } | |
637 | |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
638 #endif |
7286 | 639 |
640 node = ls->rbtree.root; | |
641 sentinel = ls->rbtree.sentinel; | |
642 | |
643 ngx_crc32_init(hash); | |
8198
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diff
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|
644 |
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diff
changeset
|
645 ngx_crc32_update(&hash, key->data, key->len); |
45db1b5c1706
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diff
changeset
|
646 |
45db1b5c1706
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diff
changeset
|
647 if (key->len == 0) { |
45db1b5c1706
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diff
changeset
|
648 ngx_crc32_update(&hash, (u_char *) sockaddr, socklen); |
45db1b5c1706
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diff
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|
649 } |
7286 | 650 |
651 if (ls->wildcard) { | |
652 ngx_crc32_update(&hash, (u_char *) local_sockaddr, local_socklen); | |
653 } | |
654 | |
655 ngx_crc32_final(hash); | |
656 | |
657 while (node != sentinel) { | |
658 | |
659 if (hash < node->key) { | |
660 node = node->left; | |
661 continue; | |
662 } | |
663 | |
664 if (hash > node->key) { | |
665 node = node->right; | |
666 continue; | |
667 } | |
668 | |
669 /* hash == node->key */ | |
670 | |
671 udp = (ngx_udp_connection_t *) node; | |
672 | |
673 c = udp->connection; | |
674 | |
8198
45db1b5c1706
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diff
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|
675 rc = ngx_memn2cmp(key->data, udp->key.data, key->len, udp->key.len); |
45db1b5c1706
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diff
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|
676 |
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diff
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|
677 if (rc == 0 && key->len == 0) { |
45db1b5c1706
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diff
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|
678 rc = ngx_cmp_sockaddr(sockaddr, socklen, |
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|
679 c->sockaddr, c->socklen, 1); |
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|
680 } |
7286 | 681 |
682 if (rc == 0 && ls->wildcard) { | |
683 rc = ngx_cmp_sockaddr(local_sockaddr, local_socklen, | |
684 c->local_sockaddr, c->local_socklen, 1); | |
685 } | |
686 | |
687 if (rc == 0) { | |
8198
45db1b5c1706
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diff
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|
688 if (key->len) { |
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diff
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|
689 rc = ngx_cmp_sockaddr(sockaddr, socklen, |
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|
690 c->sockaddr, c->socklen, 1); |
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|
691 |
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diff
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|
692 if (rc) { |
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diff
changeset
|
693 #if (NGX_DEBUG) |
45db1b5c1706
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|
694 if (c->log->log_level & NGX_LOG_DEBUG_EVENT) { |
45db1b5c1706
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|
695 ngx_str_t addr; |
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|
696 u_char text[NGX_SOCKADDR_STRLEN]; |
45db1b5c1706
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diff
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|
697 |
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diff
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|
698 addr.data = text; |
45db1b5c1706
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|
699 addr.len = ngx_sock_ntop(sockaddr, socklen, text, |
45db1b5c1706
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|
700 NGX_SOCKADDR_STRLEN, 1); |
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|
701 |
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|
702 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
45db1b5c1706
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diff
changeset
|
703 "client migrated to %V", &addr); |
45db1b5c1706
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|
704 } |
45db1b5c1706
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|
705 #endif |
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|
706 |
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diff
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|
707 if (c->socklen < socklen) { |
45db1b5c1706
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|
708 c->sockaddr = ngx_palloc(c->pool, socklen); |
45db1b5c1706
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diff
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|
709 if (c->sockaddr == NULL) { |
45db1b5c1706
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|
710 return c; |
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|
711 } |
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|
712 } |
45db1b5c1706
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diff
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|
713 |
45db1b5c1706
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diff
changeset
|
714 ngx_memcpy(c->sockaddr, sockaddr, socklen); |
45db1b5c1706
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|
715 c->socklen = socklen; |
45db1b5c1706
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diff
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|
716 } |
45db1b5c1706
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diff
changeset
|
717 } |
45db1b5c1706
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diff
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|
718 |
7286 | 719 return c; |
720 } | |
721 | |
722 node = (rc < 0) ? node->left : node->right; | |
723 } | |
724 | |
725 return NULL; | |
726 } | |
727 | |
7393
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728 #else |
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parents:
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729 |
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Vladimir Homutov <vl@nginx.com>
parents:
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730 void |
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parents:
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731 ngx_delete_udp_connection(void *data) |
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Vladimir Homutov <vl@nginx.com>
parents:
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diff
changeset
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732 { |
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Vladimir Homutov <vl@nginx.com>
parents:
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733 return; |
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Vladimir Homutov <vl@nginx.com>
parents:
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734 } |
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Vladimir Homutov <vl@nginx.com>
parents:
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changeset
|
735 |
7286 | 736 #endif |