Mercurial > hg > nginx
annotate src/event/ngx_event_udp.c @ 8733:385d511b5064 quic
QUIC: fixed udp buffer initialization.
The start field is used to check if the QUIC packet is first in the datagram.
This fixes stateless reset detection.
author | Vladimir Homutov <vl@nginx.com> |
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date | Tue, 30 Mar 2021 14:33:43 +0300 |
parents | db58c7ef1d7c |
children | c61fcdc1b8e3 |
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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QUIC: connection multiplexing per port.
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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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QUIC: do not handle empty dcid.
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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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QUIC: do not reallocate c->sockaddr.
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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; |
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32 socklen_t socklen, local_socklen; |
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33 ngx_event_t *rev, *wev; |
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34 struct iovec iov[1]; |
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35 struct msghdr msg; |
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36 ngx_sockaddr_t sa, lsa; |
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37 struct sockaddr *sockaddr, *local_sockaddr; |
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38 ngx_listening_t *ls; |
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39 ngx_event_conf_t *ecf; |
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40 ngx_connection_t *c, *lc; |
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41 static u_char buffer[65535]; |
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42 |
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43 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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44 |
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45 #if (NGX_HAVE_IP_RECVDSTADDR) |
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46 u_char msg_control[CMSG_SPACE(sizeof(struct in_addr))]; |
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47 #elif (NGX_HAVE_IP_PKTINFO) |
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48 u_char msg_control[CMSG_SPACE(sizeof(struct in_pktinfo))]; |
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49 #endif |
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50 |
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51 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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52 u_char msg_control6[CMSG_SPACE(sizeof(struct in6_pktinfo))]; |
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53 #endif |
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54 |
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55 #endif |
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56 |
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57 if (ev->timedout) { |
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58 if (ngx_enable_accept_events((ngx_cycle_t *) ngx_cycle) != NGX_OK) { |
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59 return; |
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60 } |
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61 |
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62 ev->timedout = 0; |
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63 } |
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64 |
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65 ecf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_event_core_module); |
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66 |
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67 if (!(ngx_event_flags & NGX_USE_KQUEUE_EVENT)) { |
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68 ev->available = ecf->multi_accept; |
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69 } |
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70 |
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71 lc = ev->data; |
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72 ls = lc->listening; |
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73 ev->ready = 0; |
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74 |
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75 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
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76 "recvmsg on %V, ready: %d", &ls->addr_text, ev->available); |
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77 |
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78 do { |
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79 ngx_memzero(&msg, sizeof(struct msghdr)); |
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80 |
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81 iov[0].iov_base = (void *) buffer; |
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82 iov[0].iov_len = sizeof(buffer); |
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83 |
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84 msg.msg_name = &sa; |
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85 msg.msg_namelen = sizeof(ngx_sockaddr_t); |
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86 msg.msg_iov = iov; |
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87 msg.msg_iovlen = 1; |
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88 |
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89 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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90 |
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91 if (ls->wildcard) { |
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92 |
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93 #if (NGX_HAVE_IP_RECVDSTADDR || NGX_HAVE_IP_PKTINFO) |
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94 if (ls->sockaddr->sa_family == AF_INET) { |
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95 msg.msg_control = &msg_control; |
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96 msg.msg_controllen = sizeof(msg_control); |
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97 } |
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98 #endif |
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99 |
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100 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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101 if (ls->sockaddr->sa_family == AF_INET6) { |
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102 msg.msg_control = &msg_control6; |
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103 msg.msg_controllen = sizeof(msg_control6); |
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104 } |
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105 #endif |
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106 } |
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107 |
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108 #endif |
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109 |
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110 n = recvmsg(lc->fd, &msg, 0); |
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111 |
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112 if (n == -1) { |
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113 err = ngx_socket_errno; |
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114 |
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115 if (err == NGX_EAGAIN) { |
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116 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, err, |
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117 "recvmsg() not ready"); |
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118 return; |
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119 } |
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120 |
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121 ngx_log_error(NGX_LOG_ALERT, ev->log, err, "recvmsg() failed"); |
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122 |
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123 return; |
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124 } |
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125 |
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126 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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127 if (msg.msg_flags & (MSG_TRUNC|MSG_CTRUNC)) { |
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128 ngx_log_error(NGX_LOG_ALERT, ev->log, 0, |
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129 "recvmsg() truncated data"); |
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130 continue; |
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131 } |
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132 #endif |
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133 |
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134 sockaddr = msg.msg_name; |
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135 socklen = msg.msg_namelen; |
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136 |
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137 if (socklen > (socklen_t) sizeof(ngx_sockaddr_t)) { |
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138 socklen = sizeof(ngx_sockaddr_t); |
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139 } |
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140 |
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141 if (socklen == 0) { |
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142 |
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143 /* |
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144 * on Linux recvmsg() returns zero msg_namelen |
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145 * when receiving packets from unbound AF_UNIX sockets |
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146 */ |
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147 |
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148 socklen = sizeof(struct sockaddr); |
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149 ngx_memzero(&sa, sizeof(struct sockaddr)); |
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150 sa.sockaddr.sa_family = ls->sockaddr->sa_family; |
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151 } |
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152 |
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153 local_sockaddr = ls->sockaddr; |
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154 local_socklen = ls->socklen; |
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155 |
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156 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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157 |
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158 if (ls->wildcard) { |
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159 struct cmsghdr *cmsg; |
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160 |
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161 ngx_memcpy(&lsa, local_sockaddr, local_socklen); |
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162 local_sockaddr = &lsa.sockaddr; |
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163 |
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164 for (cmsg = CMSG_FIRSTHDR(&msg); |
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165 cmsg != NULL; |
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166 cmsg = CMSG_NXTHDR(&msg, cmsg)) |
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167 { |
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168 |
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169 #if (NGX_HAVE_IP_RECVDSTADDR) |
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170 |
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171 if (cmsg->cmsg_level == IPPROTO_IP |
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172 && cmsg->cmsg_type == IP_RECVDSTADDR |
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173 && local_sockaddr->sa_family == AF_INET) |
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174 { |
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175 struct in_addr *addr; |
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176 struct sockaddr_in *sin; |
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177 |
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178 addr = (struct in_addr *) CMSG_DATA(cmsg); |
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179 sin = (struct sockaddr_in *) local_sockaddr; |
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180 sin->sin_addr = *addr; |
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181 |
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182 break; |
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183 } |
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184 |
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185 #elif (NGX_HAVE_IP_PKTINFO) |
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186 |
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187 if (cmsg->cmsg_level == IPPROTO_IP |
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188 && cmsg->cmsg_type == IP_PKTINFO |
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189 && local_sockaddr->sa_family == AF_INET) |
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190 { |
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191 struct in_pktinfo *pkt; |
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192 struct sockaddr_in *sin; |
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193 |
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194 pkt = (struct in_pktinfo *) CMSG_DATA(cmsg); |
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195 sin = (struct sockaddr_in *) local_sockaddr; |
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196 sin->sin_addr = pkt->ipi_addr; |
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197 |
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198 break; |
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199 } |
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200 |
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201 #endif |
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202 |
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203 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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204 |
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205 if (cmsg->cmsg_level == IPPROTO_IPV6 |
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206 && cmsg->cmsg_type == IPV6_PKTINFO |
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207 && local_sockaddr->sa_family == AF_INET6) |
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208 { |
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209 struct in6_pktinfo *pkt6; |
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|
210 struct sockaddr_in6 *sin6; |
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211 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
212 pkt6 = (struct in6_pktinfo *) CMSG_DATA(cmsg); |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
213 sin6 = (struct sockaddr_in6 *) local_sockaddr; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
214 sin6->sin6_addr = pkt6->ipi6_addr; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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215 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
216 break; |
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217 } |
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218 |
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219 #endif |
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220 |
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221 } |
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222 } |
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223 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
224 #endif |
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225 |
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226 key.data = (u_char *) sockaddr; |
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227 key.len = socklen; |
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228 |
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229 #if (NGX_HAVE_UNIX_DOMAIN) |
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230 |
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231 if (sockaddr->sa_family == AF_UNIX) { |
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232 struct sockaddr_un *saun = (struct sockaddr_un *) sockaddr; |
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233 |
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234 if (socklen <= (socklen_t) offsetof(struct sockaddr_un, sun_path) |
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235 || saun->sun_path[0] == '\0') |
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236 { |
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237 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, |
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238 "unbound unix socket"); |
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239 key.len = 0; |
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|
240 } |
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241 } |
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242 |
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243 #endif |
8628
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244 |
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|
245 #if (NGX_QUIC) |
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246 if (ls->quic) { |
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247 if (ngx_quic_get_packet_dcid(ev->log, buffer, n, &key) != NGX_OK) { |
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QUIC: connection multiplexing per port.
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|
248 goto next; |
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|
249 } |
45db1b5c1706
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|
250 } |
45db1b5c1706
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|
251 #endif |
45db1b5c1706
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|
252 |
8732
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diff
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|
253 c = ngx_lookup_udp_connection(ls, &key, local_sockaddr, local_socklen); |
7286 | 254 |
255 if (c) { | |
256 | |
257 #if (NGX_DEBUG) | |
258 if (c->log->log_level & NGX_LOG_DEBUG_EVENT) { | |
259 ngx_log_handler_pt handler; | |
260 | |
261 handler = c->log->handler; | |
262 c->log->handler = NULL; | |
263 | |
264 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
265 "recvmsg: fd:%d n:%z", c->fd, n); | |
266 | |
267 c->log->handler = handler; | |
268 } | |
269 #endif | |
270 | |
8732
db58c7ef1d7c
QUIC: do not handle empty dcid.
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271 #if (NGX_QUIC) |
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272 if (ls->quic) { |
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273 c->socklen = socklen; |
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274 ngx_memcpy(c->sockaddr, sockaddr, socklen); |
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275 } |
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|
276 #endif |
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277 |
7286 | 278 ngx_memzero(&buf, sizeof(ngx_buf_t)); |
279 | |
280 buf.pos = buffer; | |
281 buf.last = buffer + n; | |
8733
385d511b5064
QUIC: fixed udp buffer initialization.
Vladimir Homutov <vl@nginx.com>
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8732
diff
changeset
|
282 buf.start = buf.pos; |
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QUIC: fixed udp buffer initialization.
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8732
diff
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|
283 buf.end = buffer + sizeof(buffer); |
7286 | 284 |
285 rev = c->read; | |
286 | |
287 c->udp->buffer = &buf; | |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
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7393
diff
changeset
|
288 |
7286 | 289 rev->ready = 1; |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
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7393
diff
changeset
|
290 rev->active = 0; |
7286 | 291 |
292 rev->handler(rev); | |
293 | |
7391
27559d4a5151
Stream: fixed possible use of a freed connection.
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7286
diff
changeset
|
294 if (c->udp) { |
27559d4a5151
Stream: fixed possible use of a freed connection.
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7286
diff
changeset
|
295 c->udp->buffer = NULL; |
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Stream: fixed possible use of a freed connection.
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parents:
7286
diff
changeset
|
296 } |
27559d4a5151
Stream: fixed possible use of a freed connection.
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parents:
7286
diff
changeset
|
297 |
7286 | 298 rev->ready = 0; |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
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diff
changeset
|
299 rev->active = 1; |
7286 | 300 |
301 goto next; | |
302 } | |
303 | |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
304 #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
|
305 (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
|
306 #endif |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
307 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
308 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
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|
309 - ngx_cycle->free_connection_n; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
310 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
311 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
|
312 if (c == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
313 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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|
314 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
315 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
316 c->shared = 1; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
317 c->type = SOCK_DGRAM; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
318 c->socklen = socklen; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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|
319 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
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|
320 #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
|
321 (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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changeset
|
322 #endif |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
323 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
324 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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|
325 if (c->pool == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
326 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
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|
327 return; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
328 } |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
329 |
8731
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
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|
330 len = socklen; |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
changeset
|
331 |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
changeset
|
332 #if (NGX_QUIC) |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
changeset
|
333 if (ls->quic) { |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
changeset
|
334 len = NGX_SOCKADDRLEN; |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
changeset
|
335 } |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
336 #endif |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
changeset
|
337 |
d62a16fff3a4
QUIC: do not reallocate c->sockaddr.
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diff
changeset
|
338 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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changeset
|
339 if (c->sockaddr == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
340 ngx_close_accepted_udp_connection(c); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
341 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
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|
342 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
343 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
344 ngx_memcpy(c->sockaddr, sockaddr, socklen); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
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|
345 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
346 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
|
347 if (log == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
348 ngx_close_accepted_udp_connection(c); |
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349 return; |
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350 } |
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351 |
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352 *log = ls->log; |
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353 |
7286 | 354 c->recv = ngx_udp_shared_recv; |
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355 c->send = ngx_udp_send; |
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356 c->send_chain = ngx_udp_send_chain; |
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357 |
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358 c->log = log; |
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359 c->pool->log = log; |
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360 c->listening = ls; |
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361 |
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362 if (local_sockaddr == &lsa.sockaddr) { |
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363 local_sockaddr = ngx_palloc(c->pool, local_socklen); |
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364 if (local_sockaddr == NULL) { |
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365 ngx_close_accepted_udp_connection(c); |
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366 return; |
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367 } |
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368 |
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369 ngx_memcpy(local_sockaddr, &lsa, local_socklen); |
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370 } |
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371 |
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372 c->local_sockaddr = local_sockaddr; |
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373 c->local_socklen = local_socklen; |
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374 |
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375 c->buffer = ngx_create_temp_buf(c->pool, n); |
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376 if (c->buffer == NULL) { |
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377 ngx_close_accepted_udp_connection(c); |
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378 return; |
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379 } |
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380 |
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381 c->buffer->last = ngx_cpymem(c->buffer->last, buffer, n); |
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382 |
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383 rev = c->read; |
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|
384 wev = c->write; |
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385 |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
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7393
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386 rev->active = 1; |
7285
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387 wev->ready = 1; |
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388 |
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389 rev->log = log; |
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390 wev->log = log; |
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391 |
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392 /* |
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393 * TODO: MT: - ngx_atomic_fetch_add() |
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394 * or protection by critical section or light mutex |
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395 * |
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396 * TODO: MP: - allocated in a shared memory |
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397 * - ngx_atomic_fetch_add() |
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398 * or protection by critical section or light mutex |
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399 */ |
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400 |
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401 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); |
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402 |
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403 #if (NGX_STAT_STUB) |
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|
404 (void) ngx_atomic_fetch_add(ngx_stat_handled, 1); |
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405 #endif |
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406 |
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407 if (ls->addr_ntop) { |
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408 c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len); |
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409 if (c->addr_text.data == NULL) { |
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410 ngx_close_accepted_udp_connection(c); |
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411 return; |
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412 } |
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413 |
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|
414 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, |
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|
415 c->addr_text.data, |
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|
416 ls->addr_text_max_len, 0); |
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|
417 if (c->addr_text.len == 0) { |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
418 ngx_close_accepted_udp_connection(c); |
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419 return; |
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420 } |
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421 } |
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422 |
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|
423 #if (NGX_DEBUG) |
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424 { |
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|
425 ngx_str_t addr; |
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|
426 u_char text[NGX_SOCKADDR_STRLEN]; |
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427 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
428 ngx_debug_accepted_connection(ecf, c); |
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|
429 |
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430 if (log->log_level & NGX_LOG_DEBUG_EVENT) { |
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431 addr.data = text; |
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432 addr.len = ngx_sock_ntop(c->sockaddr, c->socklen, text, |
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433 NGX_SOCKADDR_STRLEN, 1); |
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434 |
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|
435 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, log, 0, |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
436 "*%uA recvmsg: %V fd:%d n:%z", |
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|
437 c->number, &addr, c->fd, n); |
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438 } |
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439 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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440 } |
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441 #endif |
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changeset
|
442 |
8628
45db1b5c1706
QUIC: connection multiplexing per port.
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7440
diff
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|
443 if (ngx_create_udp_connection(c) != NGX_OK) { |
7286 | 444 ngx_close_accepted_udp_connection(c); |
445 return; | |
446 } | |
447 | |
7285
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
448 log->data = NULL; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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449 log->handler = NULL; |
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450 |
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451 ls->handler(c); |
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452 |
7286 | 453 next: |
454 | |
7285
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|
455 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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456 ev->available -= n; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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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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459 } while (ev->available); |
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460 } |
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461 |
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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 static void |
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464 ngx_close_accepted_udp_connection(ngx_connection_t *c) |
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465 { |
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466 ngx_free_connection(c); |
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467 |
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468 c->fd = (ngx_socket_t) -1; |
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469 |
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470 if (c->pool) { |
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471 ngx_destroy_pool(c->pool); |
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472 } |
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473 |
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474 #if (NGX_STAT_STUB) |
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475 (void) ngx_atomic_fetch_add(ngx_stat_active, -1); |
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476 #endif |
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477 } |
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478 |
7286 | 479 |
480 static ssize_t | |
481 ngx_udp_shared_recv(ngx_connection_t *c, u_char *buf, size_t size) | |
482 { | |
483 ssize_t n; | |
484 ngx_buf_t *b; | |
485 | |
486 if (c->udp == NULL || c->udp->buffer == NULL) { | |
487 return NGX_AGAIN; | |
488 } | |
489 | |
490 b = c->udp->buffer; | |
491 | |
492 n = ngx_min(b->last - b->pos, (ssize_t) size); | |
493 | |
494 ngx_memcpy(buf, b->pos, n); | |
495 | |
496 c->udp->buffer = NULL; | |
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497 |
7286 | 498 c->read->ready = 0; |
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499 c->read->active = 1; |
7286 | 500 |
501 return n; | |
502 } | |
503 | |
504 | |
505 void | |
506 ngx_udp_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
507 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
508 { | |
509 ngx_int_t rc; | |
510 ngx_connection_t *c, *ct; | |
511 ngx_rbtree_node_t **p; | |
512 ngx_udp_connection_t *udp, *udpt; | |
513 | |
514 for ( ;; ) { | |
515 | |
516 if (node->key < temp->key) { | |
517 | |
518 p = &temp->left; | |
519 | |
520 } else if (node->key > temp->key) { | |
521 | |
522 p = &temp->right; | |
523 | |
524 } else { /* node->key == temp->key */ | |
525 | |
526 udp = (ngx_udp_connection_t *) node; | |
527 c = udp->connection; | |
528 | |
529 udpt = (ngx_udp_connection_t *) temp; | |
530 ct = udpt->connection; | |
531 | |
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532 rc = ngx_memn2cmp(udp->key.data, udpt->key.data, |
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533 udp->key.len, udpt->key.len); |
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534 |
7286 | 535 if (rc == 0 && c->listening->wildcard) { |
536 rc = ngx_cmp_sockaddr(c->local_sockaddr, c->local_socklen, | |
537 ct->local_sockaddr, ct->local_socklen, 1); | |
538 } | |
539 | |
540 p = (rc < 0) ? &temp->left : &temp->right; | |
541 } | |
542 | |
543 if (*p == sentinel) { | |
544 break; | |
545 } | |
546 | |
547 temp = *p; | |
548 } | |
549 | |
550 *p = node; | |
551 node->parent = temp; | |
552 node->left = sentinel; | |
553 node->right = sentinel; | |
554 ngx_rbt_red(node); | |
555 } | |
556 | |
557 | |
558 static ngx_int_t | |
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559 ngx_create_udp_connection(ngx_connection_t *c) |
7286 | 560 { |
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561 ngx_str_t key; |
7286 | 562 ngx_pool_cleanup_t *cln; |
563 ngx_udp_connection_t *udp; | |
564 | |
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565 #if (NGX_QUIC) |
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566 if (c->listening->quic) { |
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567 return NGX_OK; |
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568 } |
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569 #endif |
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570 |
7286 | 571 if (c->udp) { |
572 return NGX_OK; | |
573 } | |
574 | |
575 udp = ngx_pcalloc(c->pool, sizeof(ngx_udp_connection_t)); | |
576 if (udp == NULL) { | |
577 return NGX_ERROR; | |
578 } | |
579 | |
580 cln = ngx_pool_cleanup_add(c->pool, 0); | |
581 if (cln == NULL) { | |
582 return NGX_ERROR; | |
583 } | |
584 | |
585 cln->data = c; | |
586 cln->handler = ngx_delete_udp_connection; | |
587 | |
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588 key.data = (u_char *) c->sockaddr; |
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589 key.len = c->socklen; |
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590 |
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591 ngx_insert_udp_connection(c, udp, &key); |
7286 | 592 |
593 c->udp = udp; | |
594 | |
595 return NGX_OK; | |
596 } | |
597 | |
598 | |
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599 void |
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600 ngx_insert_udp_connection(ngx_connection_t *c, ngx_udp_connection_t *udp, |
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601 ngx_str_t *key) |
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602 { |
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603 uint32_t hash; |
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604 |
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605 ngx_crc32_init(hash); |
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606 |
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|
607 ngx_crc32_update(&hash, key->data, key->len); |
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608 |
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609 if (c->listening->wildcard) { |
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610 ngx_crc32_update(&hash, (u_char *) c->local_sockaddr, c->local_socklen); |
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611 } |
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|
612 |
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|
613 ngx_crc32_final(hash); |
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|
614 |
45db1b5c1706
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|
615 udp->connection = c; |
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616 udp->key = *key; |
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617 udp->node.key = hash; |
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618 |
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|
619 ngx_rbtree_insert(&c->listening->rbtree, &udp->node); |
45db1b5c1706
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|
620 } |
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|
621 |
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|
622 |
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623 void |
7286 | 624 ngx_delete_udp_connection(void *data) |
625 { | |
626 ngx_connection_t *c = data; | |
627 | |
7393
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628 if (c->udp == NULL) { |
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629 return; |
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630 } |
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631 |
7286 | 632 ngx_rbtree_delete(&c->listening->rbtree, &c->udp->node); |
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633 |
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634 c->udp = NULL; |
7286 | 635 } |
636 | |
637 | |
638 static ngx_connection_t * | |
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639 ngx_lookup_udp_connection(ngx_listening_t *ls, ngx_str_t *key, |
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640 struct sockaddr *local_sockaddr, socklen_t local_socklen) |
7286 | 641 { |
642 uint32_t hash; | |
643 ngx_int_t rc; | |
644 ngx_connection_t *c; | |
645 ngx_rbtree_node_t *node, *sentinel; | |
646 ngx_udp_connection_t *udp; | |
647 | |
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648 if (key->len == 0) { |
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649 return NULL; |
7286 | 650 } |
651 | |
652 node = ls->rbtree.root; | |
653 sentinel = ls->rbtree.sentinel; | |
654 | |
655 ngx_crc32_init(hash); | |
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656 ngx_crc32_update(&hash, key->data, key->len); |
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657 |
7286 | 658 if (ls->wildcard) { |
659 ngx_crc32_update(&hash, (u_char *) local_sockaddr, local_socklen); | |
660 } | |
661 | |
662 ngx_crc32_final(hash); | |
663 | |
664 while (node != sentinel) { | |
665 | |
666 if (hash < node->key) { | |
667 node = node->left; | |
668 continue; | |
669 } | |
670 | |
671 if (hash > node->key) { | |
672 node = node->right; | |
673 continue; | |
674 } | |
675 | |
676 /* hash == node->key */ | |
677 | |
678 udp = (ngx_udp_connection_t *) node; | |
679 | |
680 c = udp->connection; | |
681 | |
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682 rc = ngx_memn2cmp(key->data, udp->key.data, key->len, udp->key.len); |
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683 |
7286 | 684 if (rc == 0 && ls->wildcard) { |
685 rc = ngx_cmp_sockaddr(local_sockaddr, local_socklen, | |
686 c->local_sockaddr, c->local_socklen, 1); | |
687 } | |
688 | |
689 if (rc == 0) { | |
690 return c; | |
691 } | |
692 | |
693 node = (rc < 0) ? node->left : node->right; | |
694 } | |
695 | |
696 return NULL; | |
697 } | |
698 | |
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|
699 #else |
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|
700 |
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|
701 void |
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|
702 ngx_delete_udp_connection(void *data) |
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703 { |
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704 return; |
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|
705 } |
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706 |
7286 | 707 #endif |