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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10
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11
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12 ngx_os_io_t ngx_io;
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13
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14
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70
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15 ngx_listening_t *
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16 ngx_listening_inet_stream_socket(ngx_conf_t *cf, in_addr_t addr, in_port_t port)
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0
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17 {
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18 size_t len;
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19 ngx_listening_t *ls;
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28
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20 struct sockaddr_in *sin;
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0
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21
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50
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22 ls = ngx_array_push(&cf->cycle->listening);
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23 if (ls == NULL) {
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0
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24 return NULL;
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25 }
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26
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27 ngx_memzero(ls, sizeof(ngx_listening_t));
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28
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50
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29 sin = ngx_pcalloc(cf->pool, sizeof(struct sockaddr_in));
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30 if (sin == NULL) {
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0
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31 return NULL;
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32 }
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33
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28
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34 sin->sin_family = AF_INET;
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35 sin->sin_addr.s_addr = addr;
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36 sin->sin_port = htons(port);
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0
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37
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10
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38
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382
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39 ls->addr_text.data = ngx_pnalloc(cf->pool,
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400
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40 NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1);
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10
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41 if (ls->addr_text.data == NULL) {
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0
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42 return NULL;
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43 }
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44
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400
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45 len = ngx_inet_ntop(AF_INET, &addr, ls->addr_text.data,
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46 NGX_INET_ADDRSTRLEN);
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10
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47
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48 ls->addr_text.len = ngx_sprintf(ls->addr_text.data + len, ":%d", port)
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49 - ls->addr_text.data;
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50
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0
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51 ls->fd = (ngx_socket_t) -1;
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52 ls->type = SOCK_STREAM;
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28
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53 ls->sockaddr = (struct sockaddr *) sin;
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0
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54 ls->socklen = sizeof(struct sockaddr_in);
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55 ls->addr = offsetof(struct sockaddr_in, sin_addr);
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400
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56 ls->addr_text_max_len = NGX_INET_ADDRSTRLEN;
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0
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57
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58 return ls;
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59 }
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60
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61
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70
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62 ngx_int_t
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63 ngx_set_inherited_sockets(ngx_cycle_t *cycle)
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0
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64 {
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72
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65 size_t len;
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66 ngx_uint_t i;
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67 ngx_listening_t *ls;
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68 struct sockaddr_in *sin;
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112
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69 socklen_t olen;
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72
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70 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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90
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71 ngx_err_t err;
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72
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72 struct accept_filter_arg af;
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73 #endif
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74 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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75 int timeout;
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76 #endif
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0
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77
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78 ls = cycle->listening.elts;
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79 for (i = 0; i < cycle->listening.nelts; i++) {
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80
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81 /* AF_INET only */
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82
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83 ls[i].sockaddr = ngx_palloc(cycle->pool, sizeof(struct sockaddr_in));
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84 if (ls[i].sockaddr == NULL) {
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85 return NGX_ERROR;
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86 }
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87
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88 ls[i].socklen = sizeof(struct sockaddr_in);
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89 if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
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90 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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91 "getsockname() of the inherited "
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92 "socket #%d failed", ls[i].fd);
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93 ls[i].ignore = 1;
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94 continue;
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95 }
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96
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28
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97 sin = (struct sockaddr_in *) ls[i].sockaddr;
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0
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98
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28
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99 if (sin->sin_family != AF_INET) {
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0
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100 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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101 "the inherited socket #%d has "
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102 "unsupported family", ls[i].fd);
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103 ls[i].ignore = 1;
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104 continue;
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105 }
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10
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106
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400
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107 ls[i].addr_text_max_len = NGX_INET_ADDRSTRLEN;
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0
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108
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382
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109 ls[i].addr_text.data = ngx_pnalloc(cycle->pool,
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400
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110 NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1);
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0
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111 if (ls[i].addr_text.data == NULL) {
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112 return NGX_ERROR;
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113 }
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114
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400
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115 len = ngx_sock_ntop(ls[i].sockaddr, ls[i].addr_text.data,
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116 NGX_INET_ADDRSTRLEN);
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10
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117 if (len == 0) {
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0
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118 return NGX_ERROR;
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119 }
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10
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120
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121 ls[i].addr_text.len = ngx_sprintf(ls[i].addr_text.data + len, ":%d",
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28
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122 ntohs(sin->sin_port))
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10
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123 - ls[i].addr_text.data;
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72
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124
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326
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125 ls[i].backlog = NGX_LISTEN_BACKLOG;
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86
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126
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112
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127 olen = sizeof(int);
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128
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129 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF, (void *) &ls[i].rcvbuf,
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130 &olen)
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131 == -1)
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132 {
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133 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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134 "getsockopt(SO_RCVBUF) %V failed, ignored",
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135 &ls[i].addr_text);
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136
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137 ls[i].rcvbuf = -1;
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138 }
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139
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140 olen = sizeof(int);
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141
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142 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF, (void *) &ls[i].sndbuf,
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143 &olen)
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144 == -1)
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145 {
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146 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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147 "getsockopt(SO_SNDBUF) %V failed, ignored",
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148 &ls[i].addr_text);
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149
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150 ls[i].sndbuf = -1;
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151 }
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152
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72
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153 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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154
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155 ngx_memzero(&af, sizeof(struct accept_filter_arg));
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112
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156 olen = sizeof(struct accept_filter_arg);
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72
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157
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112
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158 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, &af, &olen)
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72
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159 == -1)
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160 {
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90
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161 err = ngx_errno;
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162
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163 if (err == NGX_EINVAL) {
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164 continue;
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165 }
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166
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167 ngx_log_error(NGX_LOG_NOTICE, cycle->log, err,
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72
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168 "getsockopt(SO_ACCEPTFILTER) for %V failed, ignored",
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169 &ls[i].addr_text);
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170 continue;
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171 }
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172
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112
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173 if (olen < sizeof(struct accept_filter_arg) || af.af_name[0] == '\0') {
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72
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174 continue;
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175 }
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176
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177 ls[i].accept_filter = ngx_palloc(cycle->pool, 16);
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178 if (ls[i].accept_filter == NULL) {
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179 return NGX_ERROR;
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180 }
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181
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182 (void) ngx_cpystrn((u_char *) ls[i].accept_filter,
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183 (u_char *) af.af_name, 16);
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184 #endif
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185
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186 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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187
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188 timeout = 0;
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112
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189 olen = sizeof(int);
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72
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190
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112
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191 if (getsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, &olen)
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72
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192 == -1)
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193 {
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194 ngx_log_error(NGX_LOG_NOTICE, cycle->log, ngx_errno,
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195 "getsockopt(TCP_DEFER_ACCEPT) for %V failed, ignored",
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196 &ls[i].addr_text);
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197 continue;
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198 }
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199
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114
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200 if (olen < sizeof(int) || timeout == 0) {
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72
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201 continue;
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202 }
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203
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204 ls[i].deferred_accept = 1;
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205 #endif
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0
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206 }
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207
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208 return NGX_OK;
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209 }
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210
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211
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70
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212 ngx_int_t
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213 ngx_open_listening_sockets(ngx_cycle_t *cycle)
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0
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214 {
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112
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215 int reuseaddr;
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216 ngx_uint_t i, tries, failed;
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0
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217 ngx_err_t err;
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218 ngx_log_t *log;
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219 ngx_socket_t s;
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220 ngx_listening_t *ls;
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221
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222 reuseaddr = 1;
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223 #if (NGX_SUPPRESS_WARN)
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224 failed = 0;
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225 #endif
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226
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227 log = cycle->log;
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228
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112
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229 /* TODO: configurable try number */
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0
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230
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378
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231 for (tries = 5; tries; tries--) {
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0
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232 failed = 0;
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233
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234 /* for each listening socket */
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235
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236 ls = cycle->listening.elts;
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237 for (i = 0; i < cycle->listening.nelts; i++) {
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238
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239 if (ls[i].ignore) {
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240 continue;
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241 }
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242
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243 if (ls[i].fd != -1) {
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244 continue;
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245 }
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246
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247 if (ls[i].inherited) {
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248
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249 /* TODO: close on exit */
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250 /* TODO: nonblocking */
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251 /* TODO: deferred accept */
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252
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253 continue;
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254 }
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255
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400
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256 s = ngx_socket(ls[i].sockaddr->sa_family, ls[i].type, 0);
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0
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257
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258 if (s == -1) {
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259 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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260 ngx_socket_n " %V failed", &ls[i].addr_text);
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0
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261 return NGX_ERROR;
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262 }
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263
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264 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
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112
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265 (const void *) &reuseaddr, sizeof(int))
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266 == -1)
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267 {
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0
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268 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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269 "setsockopt(SO_REUSEADDR) %V failed",
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270 &ls[i].addr_text);
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112
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271
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306
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272 if (ngx_close_socket(s) == -1) {
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112
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273 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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274 ngx_close_socket_n " %V failed",
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275 &ls[i].addr_text);
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306
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276 }
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112
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277
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0
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278 return NGX_ERROR;
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279 }
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280
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281 /* TODO: close on exit */
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282
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283 if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
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284 if (ngx_nonblocking(s) == -1) {
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285 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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286 ngx_nonblocking_n " %V failed",
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287 &ls[i].addr_text);
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112
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288
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306
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289 if (ngx_close_socket(s) == -1) {
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112
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290 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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291 ngx_close_socket_n " %V failed",
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292 &ls[i].addr_text);
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306
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293 }
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112
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294
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0
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295 return NGX_ERROR;
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296 }
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297 }
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298
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142
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299 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
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300 "bind() %V #%d ", &ls[i].addr_text, s);
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301
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0
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302 if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
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303 err = ngx_socket_errno;
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112
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304
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305 if (err == NGX_EADDRINUSE && ngx_test_config) {
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306 continue;
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307 }
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308
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0
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309 ngx_log_error(NGX_LOG_EMERG, log, err,
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10
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310 "bind() to %V failed", &ls[i].addr_text);
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0
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311
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306
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312 if (ngx_close_socket(s) == -1) {
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0
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313 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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314 ngx_close_socket_n " %V failed",
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315 &ls[i].addr_text);
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306
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316 }
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0
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317
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112
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318 if (err != NGX_EADDRINUSE) {
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319 return NGX_ERROR;
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320 }
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321
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0
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322 failed = 1;
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112
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323
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0
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324 continue;
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325 }
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326
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306
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327 if (listen(s, ls[i].backlog) == -1) {
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328 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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329 "listen() to %V, backlog %d failed",
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330 &ls[i].addr_text, ls[i].backlog);
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331
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332 if (ngx_close_socket(s) == -1) {
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333 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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334 ngx_close_socket_n " %V failed",
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335 &ls[i].addr_text);
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336 }
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337
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338 return NGX_ERROR;
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339 }
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340
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112
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341 ls[i].listen = 1;
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0
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342
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|
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343 ls[i].fd = s;
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344 }
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345
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112
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346 if (!failed) {
|
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0
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347 break;
|
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112
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348 }
|
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0
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349
|
|
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350 /* TODO: delay configurable */
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351
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352 ngx_log_error(NGX_LOG_NOTICE, log, 0,
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353 "try again to bind() after 500ms");
|
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112
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354
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0
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355 ngx_msleep(500);
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356 }
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357
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|
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358 if (failed) {
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26
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359 ngx_log_error(NGX_LOG_EMERG, log, 0, "still could not bind()");
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0
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360 return NGX_ERROR;
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361 }
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362
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363 return NGX_OK;
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364 }
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365
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366
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70
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367 void
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112
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368 ngx_configure_listening_socket(ngx_cycle_t *cycle)
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|
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369 {
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370 ngx_uint_t i;
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371 ngx_listening_t *ls;
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372
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|
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373 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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374 struct accept_filter_arg af;
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375 #endif
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376 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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377 int timeout;
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|
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378 #endif
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379
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|
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380 ls = cycle->listening.elts;
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|
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381 for (i = 0; i < cycle->listening.nelts; i++) {
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382
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|
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383 if (ls[i].rcvbuf != -1) {
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384 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF,
|
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385 (const void *) &ls[i].rcvbuf, sizeof(int))
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386 == -1)
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|
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387 {
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388 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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118
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389 "setsockopt(SO_RCVBUF, %d) %V failed, ignored",
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|
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390 ls[i].rcvbuf, &ls[i].addr_text);
|
|
112
|
391 }
|
|
|
392 }
|
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393
|
|
|
394 if (ls[i].sndbuf != -1) {
|
|
|
395 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF,
|
|
|
396 (const void *) &ls[i].sndbuf, sizeof(int))
|
|
|
397 == -1)
|
|
|
398 {
|
|
|
399 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
118
|
400 "setsockopt(SO_SNDBUF, %d) %V failed, ignored",
|
|
|
401 ls[i].sndbuf, &ls[i].addr_text);
|
|
112
|
402 }
|
|
|
403 }
|
|
|
404
|
|
184
|
405 #if 0
|
|
|
406 if (1) {
|
|
|
407 int tcp_nodelay = 1;
|
|
|
408
|
|
|
409 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
410 (const void *) &tcp_nodelay, sizeof(int))
|
|
|
411 == -1)
|
|
|
412 {
|
|
|
413 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
414 "setsockopt(TCP_NODELAY) %V failed, ignored",
|
|
|
415 &ls[i].addr_text);
|
|
|
416 }
|
|
|
417 }
|
|
|
418 #endif
|
|
|
419
|
|
112
|
420 if (ls[i].listen) {
|
|
306
|
421
|
|
|
422 /* change backlog via listen() */
|
|
|
423
|
|
112
|
424 if (listen(ls[i].fd, ls[i].backlog) == -1) {
|
|
|
425 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
306
|
426 "listen() to %V, backlog %d failed, ignored",
|
|
112
|
427 &ls[i].addr_text, ls[i].backlog);
|
|
|
428 }
|
|
|
429 }
|
|
|
430
|
|
|
431 /*
|
|
|
432 * setting deferred mode should be last operation on socket,
|
|
|
433 * because code may prematurely continue cycle on failure
|
|
|
434 */
|
|
|
435
|
|
|
436 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
|
|
437
|
|
|
438 #ifdef SO_ACCEPTFILTER
|
|
|
439
|
|
176
|
440 if (ls[i].delete_deferred) {
|
|
|
441 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)
|
|
|
442 == -1)
|
|
112
|
443 {
|
|
|
444 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
445 "setsockopt(SO_ACCEPTFILTER, NULL) "
|
|
|
446 "for %V failed, ignored",
|
|
176
|
447 &ls[i].addr_text);
|
|
112
|
448
|
|
176
|
449 if (ls[i].accept_filter) {
|
|
112
|
450 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
|
451 "could not change the accept filter "
|
|
|
452 "to \"%s\" for %V, ignored",
|
|
176
|
453 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
454 }
|
|
|
455
|
|
|
456 continue;
|
|
|
457 }
|
|
|
458
|
|
176
|
459 ls[i].deferred_accept = 0;
|
|
112
|
460 }
|
|
|
461
|
|
176
|
462 if (ls[i].add_deferred) {
|
|
112
|
463 ngx_memzero(&af, sizeof(struct accept_filter_arg));
|
|
|
464 (void) ngx_cpystrn((u_char *) af.af_name,
|
|
176
|
465 (u_char *) ls[i].accept_filter, 16);
|
|
112
|
466
|
|
176
|
467 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER,
|
|
112
|
468 &af, sizeof(struct accept_filter_arg))
|
|
|
469 == -1)
|
|
|
470 {
|
|
|
471 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
472 "setsockopt(SO_ACCEPTFILTER, \"%s\") "
|
|
|
473 " for %V failed, ignored",
|
|
176
|
474 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
475 continue;
|
|
|
476 }
|
|
|
477
|
|
176
|
478 ls[i].deferred_accept = 1;
|
|
112
|
479 }
|
|
|
480
|
|
|
481 #endif
|
|
|
482
|
|
|
483 #ifdef TCP_DEFER_ACCEPT
|
|
|
484
|
|
176
|
485 if (ls[i].add_deferred || ls[i].delete_deferred) {
|
|
112
|
486
|
|
176
|
487 if (ls[i].add_deferred) {
|
|
|
488 timeout = (int) (ls[i].post_accept_timeout / 1000);
|
|
112
|
489
|
|
|
490 } else {
|
|
|
491 timeout = 0;
|
|
|
492 }
|
|
|
493
|
|
176
|
494 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT,
|
|
112
|
495 &timeout, sizeof(int))
|
|
|
496 == -1)
|
|
|
497 {
|
|
|
498 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
499 "setsockopt(TCP_DEFER_ACCEPT, %d) for %V failed, "
|
|
|
500 "ignored",
|
|
176
|
501 timeout, &ls[i].addr_text);
|
|
112
|
502
|
|
|
503 continue;
|
|
|
504 }
|
|
|
505 }
|
|
|
506
|
|
176
|
507 if (ls[i].add_deferred) {
|
|
|
508 ls[i].deferred_accept = 1;
|
|
112
|
509 }
|
|
|
510
|
|
|
511 #endif
|
|
|
512
|
|
|
513 #endif /* NGX_HAVE_DEFERRED_ACCEPT */
|
|
|
514 }
|
|
|
515
|
|
|
516 return;
|
|
|
517 }
|
|
|
518
|
|
|
519
|
|
|
520 void
|
|
70
|
521 ngx_close_listening_sockets(ngx_cycle_t *cycle)
|
|
0
|
522 {
|
|
92
|
523 ngx_uint_t i;
|
|
|
524 ngx_listening_t *ls;
|
|
|
525 ngx_connection_t *c;
|
|
0
|
526
|
|
|
527 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
|
528 return;
|
|
|
529 }
|
|
|
530
|
|
|
531 ngx_accept_mutex_held = 0;
|
|
160
|
532 ngx_use_accept_mutex = 0;
|
|
0
|
533
|
|
|
534 ls = cycle->listening.elts;
|
|
|
535 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
536
|
|
92
|
537 c = ls[i].connection;
|
|
0
|
538
|
|
362
|
539 if (c->read->active) {
|
|
|
540 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
92
|
541 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
362
|
542
|
|
|
543 } else if (ngx_event_flags & NGX_USE_EPOLL_EVENT) {
|
|
0
|
544
|
|
362
|
545 /*
|
|
|
546 * it seems that Linux-2.6.x OpenVZ sends events
|
|
|
547 * for closed shared listening sockets unless
|
|
|
548 * the events was explicity deleted
|
|
|
549 */
|
|
|
550
|
|
|
551 ngx_del_event(c->read, NGX_READ_EVENT, 0);
|
|
|
552
|
|
|
553 } else {
|
|
92
|
554 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
0
|
555 }
|
|
|
556 }
|
|
|
557
|
|
92
|
558 ngx_free_connection(c);
|
|
|
559
|
|
|
560 c->fd = (ngx_socket_t) -1;
|
|
|
561
|
|
112
|
562 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
|
|
|
563 "close listening %V #%d ", &ls[i].addr_text, ls[i].fd);
|
|
|
564
|
|
92
|
565 if (ngx_close_socket(ls[i].fd) == -1) {
|
|
0
|
566 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
10
|
567 ngx_close_socket_n " %V failed", &ls[i].addr_text);
|
|
0
|
568 }
|
|
92
|
569 }
|
|
|
570 }
|
|
0
|
571
|
|
92
|
572
|
|
|
573 ngx_connection_t *
|
|
|
574 ngx_get_connection(ngx_socket_t s, ngx_log_t *log)
|
|
|
575 {
|
|
110
|
576 ngx_uint_t instance;
|
|
|
577 ngx_event_t *rev, *wev;
|
|
|
578 ngx_connection_t *c;
|
|
92
|
579
|
|
|
580 /* disable warning: Win32 SOCKET is u_int while UNIX socket is int */
|
|
|
581
|
|
|
582 if (ngx_cycle->files && (ngx_uint_t) s >= ngx_cycle->files_n) {
|
|
|
583 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
|
584 "the new socket has number %d, "
|
|
|
585 "but only %ui files are available",
|
|
|
586 s, ngx_cycle->files_n);
|
|
|
587 return NULL;
|
|
|
588 }
|
|
|
589
|
|
|
590 /* ngx_mutex_lock */
|
|
|
591
|
|
|
592 c = ngx_cycle->free_connections;
|
|
|
593
|
|
|
594 if (c == NULL) {
|
|
|
595 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
412
|
596 "%ui worker_connections are not enough",
|
|
92
|
597 ngx_cycle->connection_n);
|
|
|
598
|
|
|
599 /* ngx_mutex_unlock */
|
|
|
600
|
|
|
601 return NULL;
|
|
|
602 }
|
|
|
603
|
|
|
604 ngx_cycle->free_connections = c->data;
|
|
|
605 ngx_cycle->free_connection_n--;
|
|
|
606
|
|
|
607 /* ngx_mutex_unlock */
|
|
|
608
|
|
|
609 if (ngx_cycle->files) {
|
|
|
610 ngx_cycle->files[s] = c;
|
|
|
611 }
|
|
|
612
|
|
110
|
613 rev = c->read;
|
|
|
614 wev = c->write;
|
|
|
615
|
|
|
616 ngx_memzero(c, sizeof(ngx_connection_t));
|
|
|
617
|
|
|
618 c->read = rev;
|
|
|
619 c->write = wev;
|
|
|
620 c->fd = s;
|
|
|
621 c->log = log;
|
|
|
622
|
|
|
623 instance = rev->instance;
|
|
|
624
|
|
|
625 ngx_memzero(rev, sizeof(ngx_event_t));
|
|
|
626 ngx_memzero(wev, sizeof(ngx_event_t));
|
|
|
627
|
|
|
628 rev->instance = !instance;
|
|
|
629 wev->instance = !instance;
|
|
|
630
|
|
|
631 rev->index = NGX_INVALID_INDEX;
|
|
|
632 wev->index = NGX_INVALID_INDEX;
|
|
|
633
|
|
|
634 rev->data = c;
|
|
|
635 wev->data = c;
|
|
|
636
|
|
|
637 wev->write = 1;
|
|
|
638
|
|
92
|
639 return c;
|
|
|
640 }
|
|
|
641
|
|
|
642
|
|
|
643 void
|
|
|
644 ngx_free_connection(ngx_connection_t *c)
|
|
|
645 {
|
|
|
646 /* ngx_mutex_lock */
|
|
|
647
|
|
|
648 c->data = ngx_cycle->free_connections;
|
|
|
649 ngx_cycle->free_connections = c;
|
|
|
650 ngx_cycle->free_connection_n++;
|
|
|
651
|
|
|
652 /* ngx_mutex_unlock */
|
|
|
653
|
|
|
654 if (ngx_cycle->files) {
|
|
|
655 ngx_cycle->files[c->fd] = NULL;
|
|
0
|
656 }
|
|
|
657 }
|
|
|
658
|
|
|
659
|
|
70
|
660 void
|
|
|
661 ngx_close_connection(ngx_connection_t *c)
|
|
0
|
662 {
|
|
366
|
663 ngx_err_t err;
|
|
|
664 ngx_uint_t log_error, level;
|
|
0
|
665 ngx_socket_t fd;
|
|
|
666
|
|
28
|
667 if (c->fd == -1) {
|
|
0
|
668 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
|
|
|
669 return;
|
|
|
670 }
|
|
|
671
|
|
|
672 if (c->read->timer_set) {
|
|
|
673 ngx_del_timer(c->read);
|
|
|
674 }
|
|
126
|
675
|
|
0
|
676 if (c->write->timer_set) {
|
|
|
677 ngx_del_timer(c->write);
|
|
|
678 }
|
|
126
|
679
|
|
0
|
680 if (ngx_del_conn) {
|
|
|
681 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
|
682
|
|
|
683 } else {
|
|
|
684 if (c->read->active || c->read->disabled) {
|
|
|
685 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
686 }
|
|
|
687
|
|
|
688 if (c->write->active || c->write->disabled) {
|
|
|
689 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
|
|
|
690 }
|
|
|
691 }
|
|
|
692
|
|
|
693 #if (NGX_THREADS)
|
|
|
694
|
|
|
695 /*
|
|
|
696 * we have to clean the connection information before the closing
|
|
|
697 * because another thread may reopen the same file descriptor
|
|
|
698 * before we clean the connection
|
|
|
699 */
|
|
|
700
|
|
112
|
701 ngx_mutex_lock(ngx_posted_events_mutex);
|
|
0
|
702
|
|
112
|
703 if (c->read->prev) {
|
|
|
704 ngx_delete_posted_event(c->read);
|
|
|
705 }
|
|
0
|
706
|
|
112
|
707 if (c->write->prev) {
|
|
|
708 ngx_delete_posted_event(c->write);
|
|
|
709 }
|
|
0
|
710
|
|
112
|
711 c->read->closed = 1;
|
|
|
712 c->write->closed = 1;
|
|
0
|
713
|
|
112
|
714 if (c->single_connection) {
|
|
|
715 ngx_unlock(&c->lock);
|
|
|
716 c->read->locked = 0;
|
|
|
717 c->write->locked = 0;
|
|
|
718 }
|
|
0
|
719
|
|
112
|
720 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
0
|
721
|
|
|
722 #else
|
|
|
723
|
|
|
724 if (c->read->prev) {
|
|
|
725 ngx_delete_posted_event(c->read);
|
|
|
726 }
|
|
|
727
|
|
|
728 if (c->write->prev) {
|
|
|
729 ngx_delete_posted_event(c->write);
|
|
|
730 }
|
|
|
731
|
|
|
732 c->read->closed = 1;
|
|
|
733 c->write->closed = 1;
|
|
|
734
|
|
|
735 #endif
|
|
|
736
|
|
366
|
737 log_error = c->log_error;
|
|
|
738
|
|
92
|
739 ngx_free_connection(c);
|
|
|
740
|
|
0
|
741 fd = c->fd;
|
|
|
742 c->fd = (ngx_socket_t) -1;
|
|
|
743
|
|
|
744 if (ngx_close_socket(fd) == -1) {
|
|
|
745
|
|
366
|
746 err = ngx_socket_errno;
|
|
|
747
|
|
|
748 if (err == NGX_ECONNRESET || err == NGX_ENOTCONN) {
|
|
|
749
|
|
|
750 switch (log_error) {
|
|
|
751
|
|
|
752 case NGX_ERROR_INFO:
|
|
|
753 level = NGX_LOG_INFO;
|
|
|
754 break;
|
|
|
755
|
|
|
756 case NGX_ERROR_ERR:
|
|
|
757 level = NGX_LOG_ERR;
|
|
|
758 break;
|
|
|
759
|
|
|
760 default:
|
|
|
761 level = NGX_LOG_CRIT;
|
|
|
762 }
|
|
|
763
|
|
|
764 } else {
|
|
|
765 level = NGX_LOG_CRIT;
|
|
|
766 }
|
|
|
767
|
|
0
|
768 /* we use ngx_cycle->log because c->log was in c->pool */
|
|
|
769
|
|
366
|
770 ngx_log_error(level, ngx_cycle->log, err,
|
|
332
|
771 ngx_close_socket_n " %d failed", fd);
|
|
0
|
772 }
|
|
|
773 }
|
|
|
774
|
|
|
775
|
|
70
|
776 ngx_int_t
|
|
|
777 ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
|
|
0
|
778 {
|
|
|
779 ngx_uint_t level;
|
|
|
780
|
|
|
781 if (err == NGX_ECONNRESET
|
|
|
782 && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
|
|
|
783 {
|
|
|
784 return 0;
|
|
|
785 }
|
|
|
786
|
|
86
|
787 if (err == 0
|
|
|
788 || err == NGX_ECONNRESET
|
|
10
|
789 #if !(NGX_WIN32)
|
|
0
|
790 || err == NGX_EPIPE
|
|
|
791 #endif
|
|
|
792 || err == NGX_ENOTCONN
|
|
136
|
793 || err == NGX_ETIMEDOUT
|
|
0
|
794 || err == NGX_ECONNREFUSED
|
|
364
|
795 || err == NGX_ENETDOWN
|
|
|
796 || err == NGX_ENETUNREACH
|
|
|
797 || err == NGX_EHOSTDOWN
|
|
0
|
798 || err == NGX_EHOSTUNREACH)
|
|
|
799 {
|
|
|
800 switch (c->log_error) {
|
|
|
801
|
|
|
802 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
803 case NGX_ERROR_INFO:
|
|
|
804 level = NGX_LOG_INFO;
|
|
|
805 break;
|
|
|
806
|
|
|
807 case NGX_ERROR_ERR:
|
|
|
808 level = NGX_LOG_ERR;
|
|
|
809 break;
|
|
|
810
|
|
|
811 default:
|
|
366
|
812 level = NGX_LOG_ALERT;
|
|
0
|
813 }
|
|
|
814
|
|
|
815 } else {
|
|
366
|
816 level = NGX_LOG_ALERT;
|
|
0
|
817 }
|
|
|
818
|
|
|
819 ngx_log_error(level, c->log, err, text);
|
|
|
820
|
|
|
821 return NGX_ERROR;
|
|
|
822 }
|
