Mercurial > hg > nginx
annotate src/event/ngx_event_udp.c @ 8731:d62a16fff3a4 quic
QUIC: do not reallocate c->sockaddr.
When a connection is created, enough memory is allocated to accomodate
any future address change.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Thu, 11 Mar 2021 15:22:18 +0300 |
parents | 45db1b5c1706 |
children | db58c7ef1d7c |
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 *sockaddr, socklen_t socklen, |
7286 | 21 struct sockaddr *local_sockaddr, socklen_t local_socklen); |
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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 { |
8731
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27 size_t len; |
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28 ssize_t n; |
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29 ngx_str_t key; |
7286 | 30 ngx_buf_t buf; |
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31 ngx_log_t *log; |
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32 ngx_err_t err; |
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33 socklen_t socklen, local_socklen; |
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34 ngx_event_t *rev, *wev; |
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35 struct iovec iov[1]; |
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36 struct msghdr msg; |
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37 ngx_sockaddr_t sa, lsa; |
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38 struct sockaddr *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 sockaddr = msg.msg_name; |
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136 socklen = msg.msg_namelen; |
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137 |
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138 if (socklen > (socklen_t) sizeof(ngx_sockaddr_t)) { |
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139 socklen = sizeof(ngx_sockaddr_t); |
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140 } |
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141 |
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142 if (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 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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209 { |
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210 struct in6_pktinfo *pkt6; |
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211 struct sockaddr_in6 *sin6; |
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212 |
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|
213 pkt6 = (struct in6_pktinfo *) CMSG_DATA(cmsg); |
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|
214 sin6 = (struct sockaddr_in6 *) local_sockaddr; |
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215 sin6->sin6_addr = pkt6->ipi6_addr; |
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216 |
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217 break; |
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218 } |
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219 |
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220 #endif |
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221 |
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222 } |
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223 } |
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224 |
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225 #endif |
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226 |
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227 ngx_str_null(&key); |
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228 |
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229 #if (NGX_QUIC) |
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230 if (ls->quic) { |
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231 if (ngx_quic_get_packet_dcid(ev->log, buffer, n, &key) != NGX_OK) { |
45db1b5c1706
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232 goto next; |
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|
233 } |
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|
234 } |
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|
235 #endif |
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236 |
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237 c = ngx_lookup_udp_connection(ls, &key, sockaddr, socklen, |
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238 local_sockaddr, local_socklen); |
7286 | 239 |
240 if (c) { | |
241 | |
242 #if (NGX_DEBUG) | |
243 if (c->log->log_level & NGX_LOG_DEBUG_EVENT) { | |
244 ngx_log_handler_pt handler; | |
245 | |
246 handler = c->log->handler; | |
247 c->log->handler = NULL; | |
248 | |
249 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
250 "recvmsg: fd:%d n:%z", c->fd, n); | |
251 | |
252 c->log->handler = handler; | |
253 } | |
254 #endif | |
255 | |
256 ngx_memzero(&buf, sizeof(ngx_buf_t)); | |
257 | |
258 buf.pos = buffer; | |
259 buf.last = buffer + n; | |
260 | |
261 rev = c->read; | |
262 | |
263 c->udp->buffer = &buf; | |
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6d4bc025c5a7
Prevented scheduling events on a shared connection.
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264 |
7286 | 265 rev->ready = 1; |
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Prevented scheduling events on a shared connection.
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266 rev->active = 0; |
7286 | 267 |
268 rev->handler(rev); | |
269 | |
7391
27559d4a5151
Stream: fixed possible use of a freed connection.
Vladimir Homutov <vl@nginx.com>
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270 if (c->udp) { |
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Stream: fixed possible use of a freed connection.
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271 c->udp->buffer = NULL; |
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Stream: fixed possible use of a freed connection.
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272 } |
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273 |
7286 | 274 rev->ready = 0; |
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275 rev->active = 1; |
7286 | 276 |
277 goto next; | |
278 } | |
279 | |
7285
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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280 #if (NGX_STAT_STUB) |
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281 (void) ngx_atomic_fetch_add(ngx_stat_accepted, 1); |
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282 #endif |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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283 |
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284 ngx_accept_disabled = ngx_cycle->connection_n / 8 |
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285 - 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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286 |
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parents:
diff
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287 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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288 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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289 return; |
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290 } |
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291 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
292 c->shared = 1; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
293 c->type = SOCK_DGRAM; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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294 c->socklen = socklen; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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295 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
296 #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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|
297 (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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|
298 #endif |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
299 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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300 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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|
301 if (c->pool == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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302 ngx_close_accepted_udp_connection(c); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
303 return; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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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 |
8731
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
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|
306 len = socklen; |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
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|
307 |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
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|
308 #if (NGX_QUIC) |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
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|
309 if (ls->quic) { |
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QUIC: do not reallocate c->sockaddr.
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|
310 len = NGX_SOCKADDRLEN; |
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QUIC: do not reallocate c->sockaddr.
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|
311 } |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
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|
312 #endif |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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changeset
|
313 |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
changeset
|
314 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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|
315 if (c->sockaddr == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
316 ngx_close_accepted_udp_connection(c); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
317 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
318 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
319 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
320 ngx_memcpy(c->sockaddr, sockaddr, socklen); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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321 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
322 log = ngx_palloc(c->pool, sizeof(ngx_log_t)); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
323 if (log == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
324 ngx_close_accepted_udp_connection(c); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
325 return; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
326 } |
88a624c9b491
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parents:
diff
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|
327 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
328 *log = ls->log; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
329 |
7286 | 330 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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|
331 c->send = ngx_udp_send; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
332 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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|
333 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
334 c->log = log; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
335 c->pool->log = log; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
336 c->listening = ls; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
337 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
338 if (local_sockaddr == &lsa.sockaddr) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
339 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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|
340 if (local_sockaddr == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
341 ngx_close_accepted_udp_connection(c); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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changeset
|
342 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
343 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
344 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
345 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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|
346 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
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347 |
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348 c->local_sockaddr = local_sockaddr; |
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349 c->local_socklen = local_socklen; |
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350 |
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351 c->buffer = ngx_create_temp_buf(c->pool, n); |
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352 if (c->buffer == NULL) { |
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353 ngx_close_accepted_udp_connection(c); |
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354 return; |
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355 } |
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356 |
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357 c->buffer->last = ngx_cpymem(c->buffer->last, buffer, n); |
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358 |
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359 rev = c->read; |
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360 wev = c->write; |
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361 |
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362 rev->active = 1; |
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363 wev->ready = 1; |
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364 |
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365 rev->log = log; |
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366 wev->log = log; |
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367 |
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368 /* |
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369 * TODO: MT: - ngx_atomic_fetch_add() |
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370 * or protection by critical section or light mutex |
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371 * |
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372 * TODO: MP: - allocated in a shared memory |
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373 * - ngx_atomic_fetch_add() |
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374 * or protection by critical section or light mutex |
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375 */ |
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376 |
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377 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); |
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378 |
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379 #if (NGX_STAT_STUB) |
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380 (void) ngx_atomic_fetch_add(ngx_stat_handled, 1); |
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381 #endif |
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382 |
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383 if (ls->addr_ntop) { |
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384 c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len); |
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385 if (c->addr_text.data == NULL) { |
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386 ngx_close_accepted_udp_connection(c); |
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387 return; |
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388 } |
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389 |
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390 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, |
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391 c->addr_text.data, |
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392 ls->addr_text_max_len, 0); |
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393 if (c->addr_text.len == 0) { |
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394 ngx_close_accepted_udp_connection(c); |
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395 return; |
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396 } |
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397 } |
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398 |
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399 #if (NGX_DEBUG) |
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400 { |
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401 ngx_str_t addr; |
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402 u_char text[NGX_SOCKADDR_STRLEN]; |
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403 |
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404 ngx_debug_accepted_connection(ecf, c); |
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405 |
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406 if (log->log_level & NGX_LOG_DEBUG_EVENT) { |
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407 addr.data = text; |
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408 addr.len = ngx_sock_ntop(c->sockaddr, c->socklen, text, |
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409 NGX_SOCKADDR_STRLEN, 1); |
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410 |
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411 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, log, 0, |
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412 "*%uA recvmsg: %V fd:%d n:%z", |
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413 c->number, &addr, c->fd, n); |
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414 } |
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415 |
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416 } |
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417 #endif |
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418 |
8628
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QUIC: connection multiplexing per port.
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419 if (ngx_create_udp_connection(c) != NGX_OK) { |
7286 | 420 ngx_close_accepted_udp_connection(c); |
421 return; | |
422 } | |
423 | |
7285
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424 log->data = NULL; |
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425 log->handler = NULL; |
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426 |
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427 ls->handler(c); |
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428 |
7286 | 429 next: |
430 | |
7285
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431 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
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432 ev->available -= n; |
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433 } |
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434 |
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435 } while (ev->available); |
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436 } |
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437 |
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438 |
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439 static void |
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440 ngx_close_accepted_udp_connection(ngx_connection_t *c) |
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441 { |
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442 ngx_free_connection(c); |
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443 |
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444 c->fd = (ngx_socket_t) -1; |
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445 |
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446 if (c->pool) { |
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447 ngx_destroy_pool(c->pool); |
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448 } |
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449 |
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450 #if (NGX_STAT_STUB) |
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451 (void) ngx_atomic_fetch_add(ngx_stat_active, -1); |
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452 #endif |
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453 } |
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454 |
7286 | 455 |
456 static ssize_t | |
457 ngx_udp_shared_recv(ngx_connection_t *c, u_char *buf, size_t size) | |
458 { | |
459 ssize_t n; | |
460 ngx_buf_t *b; | |
461 | |
462 if (c->udp == NULL || c->udp->buffer == NULL) { | |
463 return NGX_AGAIN; | |
464 } | |
465 | |
466 b = c->udp->buffer; | |
467 | |
468 n = ngx_min(b->last - b->pos, (ssize_t) size); | |
469 | |
470 ngx_memcpy(buf, b->pos, n); | |
471 | |
472 c->udp->buffer = NULL; | |
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Prevented scheduling events on a shared connection.
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473 |
7286 | 474 c->read->ready = 0; |
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475 c->read->active = 1; |
7286 | 476 |
477 return n; | |
478 } | |
479 | |
480 | |
481 void | |
482 ngx_udp_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
483 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
484 { | |
485 ngx_int_t rc; | |
486 ngx_connection_t *c, *ct; | |
487 ngx_rbtree_node_t **p; | |
488 ngx_udp_connection_t *udp, *udpt; | |
489 | |
490 for ( ;; ) { | |
491 | |
492 if (node->key < temp->key) { | |
493 | |
494 p = &temp->left; | |
495 | |
496 } else if (node->key > temp->key) { | |
497 | |
498 p = &temp->right; | |
499 | |
500 } else { /* node->key == temp->key */ | |
501 | |
502 udp = (ngx_udp_connection_t *) node; | |
503 c = udp->connection; | |
504 | |
505 udpt = (ngx_udp_connection_t *) temp; | |
506 ct = udpt->connection; | |
507 | |
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508 rc = ngx_memn2cmp(udp->key.data, udpt->key.data, |
45db1b5c1706
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509 udp->key.len, udpt->key.len); |
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510 |
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511 if (rc == 0 && udp->key.len == 0) { |
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512 rc = ngx_cmp_sockaddr(c->sockaddr, c->socklen, |
45db1b5c1706
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513 ct->sockaddr, ct->socklen, 1); |
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514 } |
7286 | 515 |
516 if (rc == 0 && c->listening->wildcard) { | |
517 rc = ngx_cmp_sockaddr(c->local_sockaddr, c->local_socklen, | |
518 ct->local_sockaddr, ct->local_socklen, 1); | |
519 } | |
520 | |
521 p = (rc < 0) ? &temp->left : &temp->right; | |
522 } | |
523 | |
524 if (*p == sentinel) { | |
525 break; | |
526 } | |
527 | |
528 temp = *p; | |
529 } | |
530 | |
531 *p = node; | |
532 node->parent = temp; | |
533 node->left = sentinel; | |
534 node->right = sentinel; | |
535 ngx_rbt_red(node); | |
536 } | |
537 | |
538 | |
539 static ngx_int_t | |
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540 ngx_create_udp_connection(ngx_connection_t *c) |
7286 | 541 { |
8628
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542 ngx_str_t key; |
7286 | 543 ngx_pool_cleanup_t *cln; |
544 ngx_udp_connection_t *udp; | |
545 | |
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546 #if (NGX_QUIC) |
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547 if (c->listening->quic) { |
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548 return NGX_OK; |
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549 } |
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550 #endif |
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551 |
7286 | 552 if (c->udp) { |
553 return NGX_OK; | |
554 } | |
555 | |
556 udp = ngx_pcalloc(c->pool, sizeof(ngx_udp_connection_t)); | |
557 if (udp == NULL) { | |
558 return NGX_ERROR; | |
559 } | |
560 | |
561 cln = ngx_pool_cleanup_add(c->pool, 0); | |
562 if (cln == NULL) { | |
563 return NGX_ERROR; | |
564 } | |
565 | |
566 cln->data = c; | |
567 cln->handler = ngx_delete_udp_connection; | |
568 | |
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569 key.len = 0; |
45db1b5c1706
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570 |
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571 ngx_insert_udp_connection(c, udp, &key); |
7286 | 572 |
573 c->udp = udp; | |
574 | |
575 return NGX_OK; | |
576 } | |
577 | |
578 | |
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579 void |
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580 ngx_insert_udp_connection(ngx_connection_t *c, ngx_udp_connection_t *udp, |
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581 ngx_str_t *key) |
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582 { |
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583 uint32_t hash; |
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584 |
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585 ngx_crc32_init(hash); |
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586 |
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587 ngx_crc32_update(&hash, key->data, key->len); |
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588 |
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589 if (key->len == 0) { |
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590 ngx_crc32_update(&hash, (u_char *) c->sockaddr, c->socklen); |
45db1b5c1706
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591 } |
45db1b5c1706
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|
592 |
45db1b5c1706
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593 if (c->listening->wildcard) { |
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594 ngx_crc32_update(&hash, (u_char *) c->local_sockaddr, c->local_socklen); |
45db1b5c1706
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595 } |
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|
596 |
45db1b5c1706
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|
597 ngx_crc32_final(hash); |
45db1b5c1706
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|
598 |
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|
599 udp->connection = c; |
45db1b5c1706
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600 udp->key = *key; |
45db1b5c1706
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|
601 udp->node.key = hash; |
45db1b5c1706
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|
602 |
45db1b5c1706
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|
603 ngx_rbtree_insert(&c->listening->rbtree, &udp->node); |
45db1b5c1706
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604 } |
45db1b5c1706
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|
605 |
45db1b5c1706
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|
606 |
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|
607 void |
7286 | 608 ngx_delete_udp_connection(void *data) |
609 { | |
610 ngx_connection_t *c = data; | |
611 | |
7393
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|
612 if (c->udp == NULL) { |
4698cede59ff
Stream: proxy_requests directive.
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|
613 return; |
4698cede59ff
Stream: proxy_requests directive.
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|
614 } |
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
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|
615 |
7286 | 616 ngx_rbtree_delete(&c->listening->rbtree, &c->udp->node); |
7391
27559d4a5151
Stream: fixed possible use of a freed connection.
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diff
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|
617 |
27559d4a5151
Stream: fixed possible use of a freed connection.
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diff
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|
618 c->udp = NULL; |
7286 | 619 } |
620 | |
621 | |
622 static ngx_connection_t * | |
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|
623 ngx_lookup_udp_connection(ngx_listening_t *ls, ngx_str_t *key, |
45db1b5c1706
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|
624 struct sockaddr *sockaddr, socklen_t socklen, |
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|
625 struct sockaddr *local_sockaddr, socklen_t local_socklen) |
7286 | 626 { |
627 uint32_t hash; | |
628 ngx_int_t rc; | |
629 ngx_connection_t *c; | |
630 ngx_rbtree_node_t *node, *sentinel; | |
631 ngx_udp_connection_t *udp; | |
632 | |
633 #if (NGX_HAVE_UNIX_DOMAIN) | |
634 | |
635 if (sockaddr->sa_family == AF_UNIX) { | |
636 struct sockaddr_un *saun = (struct sockaddr_un *) sockaddr; | |
637 | |
638 if (socklen <= (socklen_t) offsetof(struct sockaddr_un, sun_path) | |
639 || saun->sun_path[0] == '\0') | |
640 { | |
641 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, | |
642 "unbound unix socket"); | |
643 return NULL; | |
644 } | |
645 } | |
646 | |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
647 #endif |
7286 | 648 |
649 node = ls->rbtree.root; | |
650 sentinel = ls->rbtree.sentinel; | |
651 | |
652 ngx_crc32_init(hash); | |
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|
653 |
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diff
changeset
|
654 ngx_crc32_update(&hash, key->data, key->len); |
45db1b5c1706
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diff
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|
655 |
45db1b5c1706
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diff
changeset
|
656 if (key->len == 0) { |
45db1b5c1706
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diff
changeset
|
657 ngx_crc32_update(&hash, (u_char *) sockaddr, socklen); |
45db1b5c1706
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diff
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|
658 } |
7286 | 659 |
660 if (ls->wildcard) { | |
661 ngx_crc32_update(&hash, (u_char *) local_sockaddr, local_socklen); | |
662 } | |
663 | |
664 ngx_crc32_final(hash); | |
665 | |
666 while (node != sentinel) { | |
667 | |
668 if (hash < node->key) { | |
669 node = node->left; | |
670 continue; | |
671 } | |
672 | |
673 if (hash > node->key) { | |
674 node = node->right; | |
675 continue; | |
676 } | |
677 | |
678 /* hash == node->key */ | |
679 | |
680 udp = (ngx_udp_connection_t *) node; | |
681 | |
682 c = udp->connection; | |
683 | |
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684 rc = ngx_memn2cmp(key->data, udp->key.data, key->len, udp->key.len); |
45db1b5c1706
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diff
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|
685 |
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|
686 if (rc == 0 && key->len == 0) { |
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changeset
|
687 rc = ngx_cmp_sockaddr(sockaddr, socklen, |
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688 c->sockaddr, c->socklen, 1); |
45db1b5c1706
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|
689 } |
7286 | 690 |
691 if (rc == 0 && ls->wildcard) { | |
692 rc = ngx_cmp_sockaddr(local_sockaddr, local_socklen, | |
693 c->local_sockaddr, c->local_socklen, 1); | |
694 } | |
695 | |
696 if (rc == 0) { | |
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697 if (key->len) { |
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698 rc = ngx_cmp_sockaddr(sockaddr, socklen, |
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|
699 c->sockaddr, c->socklen, 1); |
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|
700 |
45db1b5c1706
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|
701 if (rc) { |
45db1b5c1706
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|
702 #if (NGX_DEBUG) |
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703 if (c->log->log_level & NGX_LOG_DEBUG_EVENT) { |
45db1b5c1706
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|
704 ngx_str_t addr; |
45db1b5c1706
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|
705 u_char text[NGX_SOCKADDR_STRLEN]; |
45db1b5c1706
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diff
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|
706 |
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|
707 addr.data = text; |
45db1b5c1706
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|
708 addr.len = ngx_sock_ntop(sockaddr, socklen, text, |
45db1b5c1706
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|
709 NGX_SOCKADDR_STRLEN, 1); |
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|
710 |
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|
711 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
45db1b5c1706
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diff
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|
712 "client migrated to %V", &addr); |
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|
713 } |
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|
714 #endif |
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|
715 |
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|
716 ngx_memcpy(c->sockaddr, sockaddr, socklen); |
45db1b5c1706
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|
717 c->socklen = socklen; |
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|
718 } |
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diff
changeset
|
719 } |
45db1b5c1706
QUIC: connection multiplexing per port.
Roman Arutyunyan <arut@nginx.com>
parents:
7440
diff
changeset
|
720 |
7286 | 721 return c; |
722 } | |
723 | |
724 node = (rc < 0) ? node->left : node->right; | |
725 } | |
726 | |
727 return NULL; | |
728 } | |
729 | |
7393
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
parents:
7391
diff
changeset
|
730 #else |
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
parents:
7391
diff
changeset
|
731 |
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
parents:
7391
diff
changeset
|
732 void |
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
parents:
7391
diff
changeset
|
733 ngx_delete_udp_connection(void *data) |
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
parents:
7391
diff
changeset
|
734 { |
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
parents:
7391
diff
changeset
|
735 return; |
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
parents:
7391
diff
changeset
|
736 } |
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
parents:
7391
diff
changeset
|
737 |
7286 | 738 #endif |