Mercurial > hg > nginx-quic
annotate src/event/ngx_event_udp.c @ 8384:c61fcdc1b8e3 quic
UDP: extended datagram context.
Sometimes it is required to process datagram properties at higher level (i.e.
QUIC is interested in source address which may change and IP options). The
patch adds ngx_udp_dgram_t structure used to pass packet-related information
in c->udp.
author | Vladimir Homutov <vl@nginx.com> |
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date | Fri, 02 Apr 2021 18:58:19 +0300 |
parents | 385d511b5064 |
children | 9ce6d80df113 |
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, |
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20 ngx_str_t *key, struct sockaddr *local_sockaddr, socklen_t local_socklen); |
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21 |
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22 |
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23 void |
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24 ngx_event_recvmsg(ngx_event_t *ev) |
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25 { |
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26 size_t len; |
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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; |
8384
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32 socklen_t 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 ngx_udp_dgram_t dgram; |
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38 struct sockaddr *local_sockaddr; |
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39 ngx_listening_t *ls; |
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40 ngx_event_conf_t *ecf; |
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41 ngx_connection_t *c, *lc; |
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42 static u_char buffer[65535]; |
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43 |
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44 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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45 |
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46 #if (NGX_HAVE_IP_RECVDSTADDR) |
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47 u_char msg_control[CMSG_SPACE(sizeof(struct in_addr))]; |
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48 #elif (NGX_HAVE_IP_PKTINFO) |
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49 u_char msg_control[CMSG_SPACE(sizeof(struct in_pktinfo))]; |
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50 #endif |
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51 |
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52 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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53 u_char msg_control6[CMSG_SPACE(sizeof(struct in6_pktinfo))]; |
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54 #endif |
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55 |
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56 #endif |
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57 |
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58 if (ev->timedout) { |
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59 if (ngx_enable_accept_events((ngx_cycle_t *) ngx_cycle) != NGX_OK) { |
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60 return; |
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61 } |
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62 |
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63 ev->timedout = 0; |
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64 } |
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65 |
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66 ecf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_event_core_module); |
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67 |
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68 if (!(ngx_event_flags & NGX_USE_KQUEUE_EVENT)) { |
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69 ev->available = ecf->multi_accept; |
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70 } |
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71 |
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72 lc = ev->data; |
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73 ls = lc->listening; |
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74 ev->ready = 0; |
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75 |
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76 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
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77 "recvmsg on %V, ready: %d", &ls->addr_text, ev->available); |
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78 |
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79 do { |
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80 ngx_memzero(&msg, sizeof(struct msghdr)); |
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81 |
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82 iov[0].iov_base = (void *) buffer; |
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83 iov[0].iov_len = sizeof(buffer); |
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84 |
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85 msg.msg_name = &sa; |
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86 msg.msg_namelen = sizeof(ngx_sockaddr_t); |
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87 msg.msg_iov = iov; |
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88 msg.msg_iovlen = 1; |
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89 |
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90 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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91 |
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92 if (ls->wildcard) { |
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93 |
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94 #if (NGX_HAVE_IP_RECVDSTADDR || NGX_HAVE_IP_PKTINFO) |
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95 if (ls->sockaddr->sa_family == AF_INET) { |
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96 msg.msg_control = &msg_control; |
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97 msg.msg_controllen = sizeof(msg_control); |
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98 } |
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99 #endif |
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100 |
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101 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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102 if (ls->sockaddr->sa_family == AF_INET6) { |
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103 msg.msg_control = &msg_control6; |
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104 msg.msg_controllen = sizeof(msg_control6); |
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105 } |
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106 #endif |
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107 } |
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108 |
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109 #endif |
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110 |
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111 n = recvmsg(lc->fd, &msg, 0); |
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112 |
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113 if (n == -1) { |
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114 err = ngx_socket_errno; |
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115 |
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116 if (err == NGX_EAGAIN) { |
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117 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, err, |
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118 "recvmsg() not ready"); |
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119 return; |
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120 } |
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121 |
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122 ngx_log_error(NGX_LOG_ALERT, ev->log, err, "recvmsg() failed"); |
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123 |
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124 return; |
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125 } |
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126 |
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127 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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128 if (msg.msg_flags & (MSG_TRUNC|MSG_CTRUNC)) { |
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129 ngx_log_error(NGX_LOG_ALERT, ev->log, 0, |
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130 "recvmsg() truncated data"); |
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131 continue; |
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132 } |
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133 #endif |
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134 |
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135 dgram.sockaddr = msg.msg_name; |
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136 dgram.socklen = msg.msg_namelen; |
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137 |
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138 if (dgram.socklen > (socklen_t) sizeof(ngx_sockaddr_t)) { |
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139 dgram.socklen = sizeof(ngx_sockaddr_t); |
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140 } |
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141 |
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142 if (dgram.socklen == 0) { |
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143 |
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144 /* |
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145 * on Linux recvmsg() returns zero msg_namelen |
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146 * when receiving packets from unbound AF_UNIX sockets |
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147 */ |
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148 |
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149 dgram.socklen = sizeof(struct sockaddr); |
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150 ngx_memzero(&sa, sizeof(struct sockaddr)); |
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151 sa.sockaddr.sa_family = ls->sockaddr->sa_family; |
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152 } |
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153 |
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154 local_sockaddr = ls->sockaddr; |
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155 local_socklen = ls->socklen; |
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156 |
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157 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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158 |
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159 if (ls->wildcard) { |
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160 struct cmsghdr *cmsg; |
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161 |
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162 ngx_memcpy(&lsa, local_sockaddr, local_socklen); |
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163 local_sockaddr = &lsa.sockaddr; |
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164 |
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165 for (cmsg = CMSG_FIRSTHDR(&msg); |
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166 cmsg != NULL; |
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167 cmsg = CMSG_NXTHDR(&msg, cmsg)) |
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168 { |
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169 |
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170 #if (NGX_HAVE_IP_RECVDSTADDR) |
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171 |
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172 if (cmsg->cmsg_level == IPPROTO_IP |
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173 && cmsg->cmsg_type == IP_RECVDSTADDR |
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174 && local_sockaddr->sa_family == AF_INET) |
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175 { |
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176 struct in_addr *addr; |
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177 struct sockaddr_in *sin; |
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178 |
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179 addr = (struct in_addr *) CMSG_DATA(cmsg); |
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180 sin = (struct sockaddr_in *) local_sockaddr; |
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181 sin->sin_addr = *addr; |
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182 |
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183 break; |
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184 } |
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185 |
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186 #elif (NGX_HAVE_IP_PKTINFO) |
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187 |
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188 if (cmsg->cmsg_level == IPPROTO_IP |
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189 && cmsg->cmsg_type == IP_PKTINFO |
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190 && local_sockaddr->sa_family == AF_INET) |
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191 { |
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192 struct in_pktinfo *pkt; |
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193 struct sockaddr_in *sin; |
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194 |
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195 pkt = (struct in_pktinfo *) CMSG_DATA(cmsg); |
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196 sin = (struct sockaddr_in *) local_sockaddr; |
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197 sin->sin_addr = pkt->ipi_addr; |
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198 |
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199 break; |
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200 } |
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201 |
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202 #endif |
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203 |
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204 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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205 |
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206 if (cmsg->cmsg_level == IPPROTO_IPV6 |
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207 && cmsg->cmsg_type == IPV6_PKTINFO |
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208 && local_sockaddr->sa_family == AF_INET6) |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
209 { |
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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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|
210 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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parents:
diff
changeset
|
211 struct sockaddr_in6 *sin6; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
212 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
213 pkt6 = (struct in6_pktinfo *) CMSG_DATA(cmsg); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
214 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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parents:
diff
changeset
|
215 sin6->sin6_addr = pkt6->ipi6_addr; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
216 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
217 break; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
218 } |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
219 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
220 #endif |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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|
221 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
222 } |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
223 } |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
224 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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225 #endif |
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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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|
226 |
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UDP: extended datagram context.
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diff
changeset
|
227 key.data = (u_char *) dgram.sockaddr; |
c61fcdc1b8e3
UDP: extended datagram context.
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diff
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|
228 key.len = dgram.socklen; |
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229 |
db58c7ef1d7c
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230 #if (NGX_HAVE_UNIX_DOMAIN) |
db58c7ef1d7c
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diff
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|
231 |
8384
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UDP: extended datagram context.
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diff
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|
232 if (dgram.sockaddr->sa_family == AF_UNIX) { |
c61fcdc1b8e3
UDP: extended datagram context.
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|
233 struct sockaddr_un *saun = (struct sockaddr_un *) dgram.sockaddr; |
8382
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234 |
8384
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|
235 if (dgram.socklen <= (socklen_t) offsetof(struct sockaddr_un, |
c61fcdc1b8e3
UDP: extended datagram context.
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diff
changeset
|
236 sun_path) |
8382
db58c7ef1d7c
QUIC: do not handle empty dcid.
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diff
changeset
|
237 || saun->sun_path[0] == '\0') |
db58c7ef1d7c
QUIC: do not handle empty dcid.
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diff
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|
238 { |
db58c7ef1d7c
QUIC: do not handle empty dcid.
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diff
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|
239 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, |
db58c7ef1d7c
QUIC: do not handle empty dcid.
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diff
changeset
|
240 "unbound unix socket"); |
db58c7ef1d7c
QUIC: do not handle empty dcid.
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diff
changeset
|
241 key.len = 0; |
db58c7ef1d7c
QUIC: do not handle empty dcid.
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diff
changeset
|
242 } |
db58c7ef1d7c
QUIC: do not handle empty dcid.
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diff
changeset
|
243 } |
db58c7ef1d7c
QUIC: do not handle empty dcid.
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diff
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244 |
db58c7ef1d7c
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|
245 #endif |
8198
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
changeset
|
246 |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
changeset
|
247 #if (NGX_QUIC) |
45db1b5c1706
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diff
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|
248 if (ls->quic) { |
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QUIC: connection multiplexing per port.
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diff
changeset
|
249 if (ngx_quic_get_packet_dcid(ev->log, buffer, n, &key) != NGX_OK) { |
45db1b5c1706
QUIC: connection multiplexing per port.
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|
250 goto next; |
45db1b5c1706
QUIC: connection multiplexing per port.
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7440
diff
changeset
|
251 } |
45db1b5c1706
QUIC: connection multiplexing per port.
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7440
diff
changeset
|
252 } |
45db1b5c1706
QUIC: connection multiplexing per port.
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7440
diff
changeset
|
253 #endif |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
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|
254 |
8382
db58c7ef1d7c
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diff
changeset
|
255 c = ngx_lookup_udp_connection(ls, &key, local_sockaddr, local_socklen); |
7286 | 256 |
257 if (c) { | |
258 | |
259 #if (NGX_DEBUG) | |
260 if (c->log->log_level & NGX_LOG_DEBUG_EVENT) { | |
261 ngx_log_handler_pt handler; | |
262 | |
263 handler = c->log->handler; | |
264 c->log->handler = NULL; | |
265 | |
266 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
267 "recvmsg: fd:%d n:%z", c->fd, n); | |
268 | |
269 c->log->handler = handler; | |
270 } | |
271 #endif | |
272 | |
273 ngx_memzero(&buf, sizeof(ngx_buf_t)); | |
274 | |
275 buf.pos = buffer; | |
276 buf.last = buffer + n; | |
8383
385d511b5064
QUIC: fixed udp buffer initialization.
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8382
diff
changeset
|
277 buf.start = buf.pos; |
385d511b5064
QUIC: fixed udp buffer initialization.
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8382
diff
changeset
|
278 buf.end = buffer + sizeof(buffer); |
7286 | 279 |
280 rev = c->read; | |
281 | |
8384
c61fcdc1b8e3
UDP: extended datagram context.
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8383
diff
changeset
|
282 dgram.buffer = &buf; |
c61fcdc1b8e3
UDP: extended datagram context.
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8383
diff
changeset
|
283 |
c61fcdc1b8e3
UDP: extended datagram context.
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8383
diff
changeset
|
284 c->udp->dgram = &dgram; |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
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7393
diff
changeset
|
285 |
7286 | 286 rev->ready = 1; |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
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7393
diff
changeset
|
287 rev->active = 0; |
7286 | 288 |
289 rev->handler(rev); | |
290 | |
7391
27559d4a5151
Stream: fixed possible use of a freed connection.
Vladimir Homutov <vl@nginx.com>
parents:
7286
diff
changeset
|
291 if (c->udp) { |
8384
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UDP: extended datagram context.
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8383
diff
changeset
|
292 c->udp->dgram = NULL; |
7391
27559d4a5151
Stream: fixed possible use of a freed connection.
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7286
diff
changeset
|
293 } |
27559d4a5151
Stream: fixed possible use of a freed connection.
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parents:
7286
diff
changeset
|
294 |
7286 | 295 rev->ready = 0; |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
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7393
diff
changeset
|
296 rev->active = 1; |
7286 | 297 |
298 goto next; | |
299 } | |
300 | |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
301 #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
|
302 (void) ngx_atomic_fetch_add(ngx_stat_accepted, 1); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
303 #endif |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
304 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
305 ngx_accept_disabled = ngx_cycle->connection_n / 8 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
306 - ngx_cycle->free_connection_n; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
307 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
308 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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parents:
diff
changeset
|
309 if (c == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
310 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
311 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
312 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
313 c->shared = 1; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
314 c->type = SOCK_DGRAM; |
8384
c61fcdc1b8e3
UDP: extended datagram context.
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parents:
8383
diff
changeset
|
315 c->socklen = dgram.socklen; |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
316 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
317 #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
|
318 (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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parents:
diff
changeset
|
319 #endif |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
320 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
321 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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parents:
diff
changeset
|
322 if (c->pool == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
323 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:
diff
changeset
|
324 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
325 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
326 |
8384
c61fcdc1b8e3
UDP: extended datagram context.
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parents:
8383
diff
changeset
|
327 len = dgram.socklen; |
8381
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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8198
diff
changeset
|
328 |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
Roman Arutyunyan <arut@nginx.com>
parents:
8198
diff
changeset
|
329 #if (NGX_QUIC) |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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8198
diff
changeset
|
330 if (ls->quic) { |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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parents:
8198
diff
changeset
|
331 len = NGX_SOCKADDRLEN; |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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parents:
8198
diff
changeset
|
332 } |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
Roman Arutyunyan <arut@nginx.com>
parents:
8198
diff
changeset
|
333 #endif |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
Roman Arutyunyan <arut@nginx.com>
parents:
8198
diff
changeset
|
334 |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
Roman Arutyunyan <arut@nginx.com>
parents:
8198
diff
changeset
|
335 c->sockaddr = ngx_palloc(c->pool, len); |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
336 if (c->sockaddr == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
337 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:
diff
changeset
|
338 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
339 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
340 |
8384
c61fcdc1b8e3
UDP: extended datagram context.
Vladimir Homutov <vl@nginx.com>
parents:
8383
diff
changeset
|
341 ngx_memcpy(c->sockaddr, dgram.sockaddr, dgram.socklen); |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
342 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
343 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
|
344 if (log == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
345 ngx_close_accepted_udp_connection(c); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
346 return; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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347 } |
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348 |
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349 *log = ls->log; |
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350 |
7286 | 351 c->recv = ngx_udp_shared_recv; |
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352 c->send = ngx_udp_send; |
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353 c->send_chain = ngx_udp_send_chain; |
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354 |
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355 c->log = log; |
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356 c->pool->log = log; |
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357 c->listening = ls; |
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358 |
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359 if (local_sockaddr == &lsa.sockaddr) { |
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360 local_sockaddr = ngx_palloc(c->pool, local_socklen); |
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361 if (local_sockaddr == NULL) { |
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362 ngx_close_accepted_udp_connection(c); |
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363 return; |
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364 } |
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365 |
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366 ngx_memcpy(local_sockaddr, &lsa, local_socklen); |
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367 } |
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368 |
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369 c->local_sockaddr = local_sockaddr; |
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370 c->local_socklen = local_socklen; |
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371 |
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372 c->buffer = ngx_create_temp_buf(c->pool, n); |
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373 if (c->buffer == NULL) { |
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374 ngx_close_accepted_udp_connection(c); |
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375 return; |
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376 } |
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377 |
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378 c->buffer->last = ngx_cpymem(c->buffer->last, buffer, n); |
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379 |
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380 rev = c->read; |
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381 wev = c->write; |
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382 |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
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383 rev->active = 1; |
7285
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384 wev->ready = 1; |
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385 |
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386 rev->log = log; |
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387 wev->log = log; |
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388 |
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389 /* |
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390 * TODO: MT: - ngx_atomic_fetch_add() |
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391 * or protection by critical section or light mutex |
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392 * |
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393 * TODO: MP: - allocated in a shared memory |
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394 * - ngx_atomic_fetch_add() |
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395 * or protection by critical section or light mutex |
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396 */ |
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397 |
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398 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); |
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399 |
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400 #if (NGX_STAT_STUB) |
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|
401 (void) ngx_atomic_fetch_add(ngx_stat_handled, 1); |
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402 #endif |
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403 |
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404 if (ls->addr_ntop) { |
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405 c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len); |
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406 if (c->addr_text.data == NULL) { |
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407 ngx_close_accepted_udp_connection(c); |
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408 return; |
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409 } |
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410 |
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|
411 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, |
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|
412 c->addr_text.data, |
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|
413 ls->addr_text_max_len, 0); |
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|
414 if (c->addr_text.len == 0) { |
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|
415 ngx_close_accepted_udp_connection(c); |
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416 return; |
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417 } |
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418 } |
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419 |
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420 #if (NGX_DEBUG) |
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421 { |
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|
422 ngx_str_t addr; |
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423 u_char text[NGX_SOCKADDR_STRLEN]; |
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424 |
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425 ngx_debug_accepted_connection(ecf, c); |
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426 |
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427 if (log->log_level & NGX_LOG_DEBUG_EVENT) { |
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|
428 addr.data = text; |
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|
429 addr.len = ngx_sock_ntop(c->sockaddr, c->socklen, text, |
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430 NGX_SOCKADDR_STRLEN, 1); |
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431 |
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432 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, log, 0, |
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433 "*%uA recvmsg: %V fd:%d n:%z", |
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434 c->number, &addr, c->fd, n); |
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435 } |
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436 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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437 } |
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|
438 #endif |
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changeset
|
439 |
8198
45db1b5c1706
QUIC: connection multiplexing per port.
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7440
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|
440 if (ngx_create_udp_connection(c) != NGX_OK) { |
7286 | 441 ngx_close_accepted_udp_connection(c); |
442 return; | |
443 } | |
444 | |
7285
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445 log->data = NULL; |
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|
446 log->handler = NULL; |
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447 |
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448 ls->handler(c); |
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449 |
7286 | 450 next: |
451 | |
7285
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452 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
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453 ev->available -= n; |
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454 } |
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455 |
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456 } while (ev->available); |
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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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457 } |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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458 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
459 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
460 static void |
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|
461 ngx_close_accepted_udp_connection(ngx_connection_t *c) |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
462 { |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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463 ngx_free_connection(c); |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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464 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
465 c->fd = (ngx_socket_t) -1; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
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|
466 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
467 if (c->pool) { |
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|
468 ngx_destroy_pool(c->pool); |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
469 } |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
470 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
471 #if (NGX_STAT_STUB) |
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|
472 (void) ngx_atomic_fetch_add(ngx_stat_active, -1); |
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473 #endif |
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474 } |
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475 |
7286 | 476 |
477 static ssize_t | |
478 ngx_udp_shared_recv(ngx_connection_t *c, u_char *buf, size_t size) | |
479 { | |
480 ssize_t n; | |
481 ngx_buf_t *b; | |
482 | |
8384
c61fcdc1b8e3
UDP: extended datagram context.
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|
483 if (c->udp == NULL || c->udp->dgram == NULL) { |
7286 | 484 return NGX_AGAIN; |
485 } | |
486 | |
8384
c61fcdc1b8e3
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487 b = c->udp->dgram->buffer; |
7286 | 488 |
489 n = ngx_min(b->last - b->pos, (ssize_t) size); | |
490 | |
491 ngx_memcpy(buf, b->pos, n); | |
492 | |
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|
493 c->udp->dgram = NULL; |
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Prevented scheduling events on a shared connection.
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494 |
7286 | 495 c->read->ready = 0; |
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496 c->read->active = 1; |
7286 | 497 |
498 return n; | |
499 } | |
500 | |
501 | |
502 void | |
503 ngx_udp_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
504 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
505 { | |
506 ngx_int_t rc; | |
507 ngx_connection_t *c, *ct; | |
508 ngx_rbtree_node_t **p; | |
509 ngx_udp_connection_t *udp, *udpt; | |
510 | |
511 for ( ;; ) { | |
512 | |
513 if (node->key < temp->key) { | |
514 | |
515 p = &temp->left; | |
516 | |
517 } else if (node->key > temp->key) { | |
518 | |
519 p = &temp->right; | |
520 | |
521 } else { /* node->key == temp->key */ | |
522 | |
523 udp = (ngx_udp_connection_t *) node; | |
524 c = udp->connection; | |
525 | |
526 udpt = (ngx_udp_connection_t *) temp; | |
527 ct = udpt->connection; | |
528 | |
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529 rc = ngx_memn2cmp(udp->key.data, udpt->key.data, |
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530 udp->key.len, udpt->key.len); |
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531 |
7286 | 532 if (rc == 0 && c->listening->wildcard) { |
533 rc = ngx_cmp_sockaddr(c->local_sockaddr, c->local_socklen, | |
534 ct->local_sockaddr, ct->local_socklen, 1); | |
535 } | |
536 | |
537 p = (rc < 0) ? &temp->left : &temp->right; | |
538 } | |
539 | |
540 if (*p == sentinel) { | |
541 break; | |
542 } | |
543 | |
544 temp = *p; | |
545 } | |
546 | |
547 *p = node; | |
548 node->parent = temp; | |
549 node->left = sentinel; | |
550 node->right = sentinel; | |
551 ngx_rbt_red(node); | |
552 } | |
553 | |
554 | |
555 static ngx_int_t | |
8198
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556 ngx_create_udp_connection(ngx_connection_t *c) |
7286 | 557 { |
8198
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558 ngx_str_t key; |
7286 | 559 ngx_pool_cleanup_t *cln; |
560 ngx_udp_connection_t *udp; | |
561 | |
8198
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562 #if (NGX_QUIC) |
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563 if (c->listening->quic) { |
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564 return NGX_OK; |
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565 } |
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|
566 #endif |
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|
567 |
7286 | 568 if (c->udp) { |
569 return NGX_OK; | |
570 } | |
571 | |
572 udp = ngx_pcalloc(c->pool, sizeof(ngx_udp_connection_t)); | |
573 if (udp == NULL) { | |
574 return NGX_ERROR; | |
575 } | |
576 | |
577 cln = ngx_pool_cleanup_add(c->pool, 0); | |
578 if (cln == NULL) { | |
579 return NGX_ERROR; | |
580 } | |
581 | |
582 cln->data = c; | |
583 cln->handler = ngx_delete_udp_connection; | |
584 | |
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db58c7ef1d7c
QUIC: do not handle empty dcid.
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585 key.data = (u_char *) c->sockaddr; |
db58c7ef1d7c
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586 key.len = c->socklen; |
8198
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587 |
45db1b5c1706
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588 ngx_insert_udp_connection(c, udp, &key); |
7286 | 589 |
590 c->udp = udp; | |
591 | |
592 return NGX_OK; | |
593 } | |
594 | |
595 | |
7393
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Stream: proxy_requests directive.
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596 void |
8198
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597 ngx_insert_udp_connection(ngx_connection_t *c, ngx_udp_connection_t *udp, |
45db1b5c1706
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598 ngx_str_t *key) |
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599 { |
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|
600 uint32_t hash; |
45db1b5c1706
QUIC: connection multiplexing per port.
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|
601 |
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|
602 ngx_crc32_init(hash); |
45db1b5c1706
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|
603 |
45db1b5c1706
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changeset
|
604 ngx_crc32_update(&hash, key->data, key->len); |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
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|
605 |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
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|
606 if (c->listening->wildcard) { |
45db1b5c1706
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|
607 ngx_crc32_update(&hash, (u_char *) c->local_sockaddr, c->local_socklen); |
45db1b5c1706
QUIC: connection multiplexing per port.
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|
608 } |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
changeset
|
609 |
45db1b5c1706
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|
610 ngx_crc32_final(hash); |
45db1b5c1706
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|
611 |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
changeset
|
612 udp->connection = c; |
45db1b5c1706
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diff
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|
613 udp->key = *key; |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
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|
614 udp->node.key = hash; |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
changeset
|
615 |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
changeset
|
616 ngx_rbtree_insert(&c->listening->rbtree, &udp->node); |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
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|
617 } |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
changeset
|
618 |
45db1b5c1706
QUIC: connection multiplexing per port.
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diff
changeset
|
619 |
45db1b5c1706
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diff
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|
620 void |
7286 | 621 ngx_delete_udp_connection(void *data) |
622 { | |
623 ngx_connection_t *c = data; | |
624 | |
7393
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625 if (c->udp == NULL) { |
4698cede59ff
Stream: proxy_requests directive.
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626 return; |
4698cede59ff
Stream: proxy_requests directive.
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|
627 } |
4698cede59ff
Stream: proxy_requests directive.
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|
628 |
7286 | 629 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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diff
changeset
|
630 |
27559d4a5151
Stream: fixed possible use of a freed connection.
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7286
diff
changeset
|
631 c->udp = NULL; |
7286 | 632 } |
633 | |
634 | |
635 static ngx_connection_t * | |
8198
45db1b5c1706
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636 ngx_lookup_udp_connection(ngx_listening_t *ls, ngx_str_t *key, |
45db1b5c1706
QUIC: connection multiplexing per port.
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changeset
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637 struct sockaddr *local_sockaddr, socklen_t local_socklen) |
7286 | 638 { |
639 uint32_t hash; | |
640 ngx_int_t rc; | |
641 ngx_connection_t *c; | |
642 ngx_rbtree_node_t *node, *sentinel; | |
643 ngx_udp_connection_t *udp; | |
644 | |
8382
db58c7ef1d7c
QUIC: do not handle empty dcid.
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diff
changeset
|
645 if (key->len == 0) { |
db58c7ef1d7c
QUIC: do not handle empty dcid.
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|
646 return NULL; |
7286 | 647 } |
648 | |
649 node = ls->rbtree.root; | |
650 sentinel = ls->rbtree.sentinel; | |
651 | |
652 ngx_crc32_init(hash); | |
8198
45db1b5c1706
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diff
changeset
|
653 ngx_crc32_update(&hash, key->data, key->len); |
45db1b5c1706
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changeset
|
654 |
7286 | 655 if (ls->wildcard) { |
656 ngx_crc32_update(&hash, (u_char *) local_sockaddr, local_socklen); | |
657 } | |
658 | |
659 ngx_crc32_final(hash); | |
660 | |
661 while (node != sentinel) { | |
662 | |
663 if (hash < node->key) { | |
664 node = node->left; | |
665 continue; | |
666 } | |
667 | |
668 if (hash > node->key) { | |
669 node = node->right; | |
670 continue; | |
671 } | |
672 | |
673 /* hash == node->key */ | |
674 | |
675 udp = (ngx_udp_connection_t *) node; | |
676 | |
677 c = udp->connection; | |
678 | |
8198
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|
679 rc = ngx_memn2cmp(key->data, udp->key.data, key->len, udp->key.len); |
45db1b5c1706
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|
680 |
7286 | 681 if (rc == 0 && ls->wildcard) { |
682 rc = ngx_cmp_sockaddr(local_sockaddr, local_socklen, | |
683 c->local_sockaddr, c->local_socklen, 1); | |
684 } | |
685 | |
686 if (rc == 0) { | |
687 return c; | |
688 } | |
689 | |
690 node = (rc < 0) ? node->left : node->right; | |
691 } | |
692 | |
693 return NULL; | |
694 } | |
695 | |
7393
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Stream: proxy_requests directive.
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diff
changeset
|
696 #else |
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|
697 |
4698cede59ff
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|
698 void |
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changeset
|
699 ngx_delete_udp_connection(void *data) |
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|
700 { |
4698cede59ff
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|
701 return; |
4698cede59ff
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diff
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|
702 } |
4698cede59ff
Stream: proxy_requests directive.
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|
703 |
7286 | 704 #endif |