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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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400
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55 ls->addr_text_max_len = NGX_INET_ADDRSTRLEN;
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0
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56
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57 return ls;
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58 }
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59
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60
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70
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61 ngx_int_t
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62 ngx_set_inherited_sockets(ngx_cycle_t *cycle)
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0
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63 {
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72
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64 size_t len;
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65 ngx_uint_t i;
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66 ngx_listening_t *ls;
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112
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67 socklen_t olen;
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72
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68 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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90
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69 ngx_err_t err;
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72
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70 struct accept_filter_arg af;
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71 #endif
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72 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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73 int timeout;
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74 #endif
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0
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75
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76 ls = cycle->listening.elts;
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77 for (i = 0; i < cycle->listening.nelts; i++) {
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78
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79 /* AF_INET only */
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80
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81 ls[i].sockaddr = ngx_palloc(cycle->pool, sizeof(struct sockaddr_in));
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82 if (ls[i].sockaddr == NULL) {
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83 return NGX_ERROR;
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84 }
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85
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86 ls[i].socklen = sizeof(struct sockaddr_in);
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87 if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
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88 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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89 "getsockname() of the inherited "
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90 "socket #%d failed", ls[i].fd);
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91 ls[i].ignore = 1;
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92 continue;
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93 }
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94
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448
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95 switch (ls[i].sockaddr->sa_family) {
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0
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96
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448
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97 #if (NGX_HAVE_INET6)
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98 case AF_INET6:
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99 ls[i].addr_text_max_len = NGX_INET6_ADDRSTRLEN;
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100 break;
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101 #endif
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102
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103 case AF_INET:
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104 ls[i].addr_text_max_len = NGX_INET_ADDRSTRLEN;
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105 break;
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106
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107 default:
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0
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108 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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109 "the inherited socket #%d has "
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448
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110 "an unsupported protocol family", ls[i].fd);
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0
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111 ls[i].ignore = 1;
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112 continue;
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113 }
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10
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114
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448
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115 len = ls[i].addr_text_max_len + sizeof(":65535") - 1;
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0
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116
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448
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117 ls[i].addr_text.data = ngx_pnalloc(cycle->pool, len);
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0
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118 if (ls[i].addr_text.data == NULL) {
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119 return NGX_ERROR;
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120 }
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121
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448
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122 len = ngx_sock_ntop(ls[i].sockaddr, ls[i].addr_text.data, len, 1);
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10
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123 if (len == 0) {
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0
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124 return NGX_ERROR;
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125 }
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10
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126
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448
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127 ls[i].addr_text.len = len;
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72
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128
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326
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129 ls[i].backlog = NGX_LISTEN_BACKLOG;
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86
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130
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112
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131 olen = sizeof(int);
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132
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133 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF, (void *) &ls[i].rcvbuf,
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134 &olen)
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135 == -1)
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136 {
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137 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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138 "getsockopt(SO_RCVBUF) %V failed, ignored",
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139 &ls[i].addr_text);
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140
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141 ls[i].rcvbuf = -1;
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142 }
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143
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144 olen = sizeof(int);
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145
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146 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF, (void *) &ls[i].sndbuf,
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147 &olen)
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148 == -1)
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149 {
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150 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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151 "getsockopt(SO_SNDBUF) %V failed, ignored",
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152 &ls[i].addr_text);
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153
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154 ls[i].sndbuf = -1;
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155 }
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156
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72
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157 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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158
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159 ngx_memzero(&af, sizeof(struct accept_filter_arg));
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112
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160 olen = sizeof(struct accept_filter_arg);
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72
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161
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112
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162 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, &af, &olen)
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72
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163 == -1)
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164 {
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90
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165 err = ngx_errno;
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166
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167 if (err == NGX_EINVAL) {
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168 continue;
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169 }
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170
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171 ngx_log_error(NGX_LOG_NOTICE, cycle->log, err,
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72
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172 "getsockopt(SO_ACCEPTFILTER) for %V failed, ignored",
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173 &ls[i].addr_text);
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174 continue;
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175 }
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176
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112
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177 if (olen < sizeof(struct accept_filter_arg) || af.af_name[0] == '\0') {
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72
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178 continue;
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179 }
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180
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181 ls[i].accept_filter = ngx_palloc(cycle->pool, 16);
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182 if (ls[i].accept_filter == NULL) {
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183 return NGX_ERROR;
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184 }
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185
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186 (void) ngx_cpystrn((u_char *) ls[i].accept_filter,
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187 (u_char *) af.af_name, 16);
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188 #endif
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189
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190 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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191
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192 timeout = 0;
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112
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193 olen = sizeof(int);
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72
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194
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112
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195 if (getsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, &olen)
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72
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196 == -1)
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197 {
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198 ngx_log_error(NGX_LOG_NOTICE, cycle->log, ngx_errno,
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199 "getsockopt(TCP_DEFER_ACCEPT) for %V failed, ignored",
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200 &ls[i].addr_text);
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201 continue;
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202 }
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203
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114
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204 if (olen < sizeof(int) || timeout == 0) {
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72
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205 continue;
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206 }
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207
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208 ls[i].deferred_accept = 1;
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209 #endif
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0
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210 }
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211
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212 return NGX_OK;
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213 }
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214
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215
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70
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216 ngx_int_t
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217 ngx_open_listening_sockets(ngx_cycle_t *cycle)
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0
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218 {
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112
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219 int reuseaddr;
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220 ngx_uint_t i, tries, failed;
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0
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221 ngx_err_t err;
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222 ngx_log_t *log;
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223 ngx_socket_t s;
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224 ngx_listening_t *ls;
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225
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226 reuseaddr = 1;
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227 #if (NGX_SUPPRESS_WARN)
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228 failed = 0;
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229 #endif
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230
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231 log = cycle->log;
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232
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112
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233 /* TODO: configurable try number */
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0
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234
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378
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235 for (tries = 5; tries; tries--) {
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0
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236 failed = 0;
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237
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238 /* for each listening socket */
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239
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240 ls = cycle->listening.elts;
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241 for (i = 0; i < cycle->listening.nelts; i++) {
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242
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243 if (ls[i].ignore) {
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244 continue;
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245 }
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246
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247 if (ls[i].fd != -1) {
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248 continue;
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249 }
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250
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251 if (ls[i].inherited) {
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252
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253 /* TODO: close on exit */
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254 /* TODO: nonblocking */
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255 /* TODO: deferred accept */
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256
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257 continue;
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258 }
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259
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400
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260 s = ngx_socket(ls[i].sockaddr->sa_family, ls[i].type, 0);
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0
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261
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262 if (s == -1) {
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263 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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264 ngx_socket_n " %V failed", &ls[i].addr_text);
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0
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265 return NGX_ERROR;
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266 }
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267
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268 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
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112
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269 (const void *) &reuseaddr, sizeof(int))
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270 == -1)
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271 {
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0
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272 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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273 "setsockopt(SO_REUSEADDR) %V failed",
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274 &ls[i].addr_text);
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112
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275
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306
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276 if (ngx_close_socket(s) == -1) {
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112
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277 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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278 ngx_close_socket_n " %V failed",
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279 &ls[i].addr_text);
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306
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280 }
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112
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281
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0
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282 return NGX_ERROR;
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283 }
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284
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285 /* TODO: close on exit */
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286
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287 if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
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288 if (ngx_nonblocking(s) == -1) {
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289 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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290 ngx_nonblocking_n " %V failed",
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291 &ls[i].addr_text);
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112
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292
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306
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293 if (ngx_close_socket(s) == -1) {
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112
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294 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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295 ngx_close_socket_n " %V failed",
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296 &ls[i].addr_text);
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306
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297 }
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112
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298
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0
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299 return NGX_ERROR;
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300 }
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301 }
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302
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142
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303 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
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304 "bind() %V #%d ", &ls[i].addr_text, s);
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305
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0
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306 if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
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307 err = ngx_socket_errno;
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112
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308
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309 if (err == NGX_EADDRINUSE && ngx_test_config) {
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310 continue;
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311 }
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312
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0
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313 ngx_log_error(NGX_LOG_EMERG, log, err,
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10
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314 "bind() to %V failed", &ls[i].addr_text);
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0
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315
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306
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316 if (ngx_close_socket(s) == -1) {
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0
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317 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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318 ngx_close_socket_n " %V failed",
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319 &ls[i].addr_text);
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306
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320 }
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0
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321
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112
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322 if (err != NGX_EADDRINUSE) {
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323 return NGX_ERROR;
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324 }
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325
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0
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326 failed = 1;
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112
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327
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0
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328 continue;
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329 }
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330
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306
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331 if (listen(s, ls[i].backlog) == -1) {
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332 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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333 "listen() to %V, backlog %d failed",
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334 &ls[i].addr_text, ls[i].backlog);
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335
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|
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336 if (ngx_close_socket(s) == -1) {
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337 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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338 ngx_close_socket_n " %V failed",
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339 &ls[i].addr_text);
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340 }
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341
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|
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342 return NGX_ERROR;
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|
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343 }
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344
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|
112
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345 ls[i].listen = 1;
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0
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346
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|
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347 ls[i].fd = s;
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348 }
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349
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112
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350 if (!failed) {
|
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0
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351 break;
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112
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352 }
|
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0
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353
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|
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354 /* TODO: delay configurable */
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355
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|
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356 ngx_log_error(NGX_LOG_NOTICE, log, 0,
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357 "try again to bind() after 500ms");
|
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112
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358
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0
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359 ngx_msleep(500);
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360 }
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361
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|
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362 if (failed) {
|
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26
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363 ngx_log_error(NGX_LOG_EMERG, log, 0, "still could not bind()");
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0
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364 return NGX_ERROR;
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365 }
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366
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367 return NGX_OK;
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368 }
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369
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370
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70
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371 void
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112
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372 ngx_configure_listening_socket(ngx_cycle_t *cycle)
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|
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373 {
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374 ngx_uint_t i;
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375 ngx_listening_t *ls;
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376
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|
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377 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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378 struct accept_filter_arg af;
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379 #endif
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380 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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381 int timeout;
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|
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382 #endif
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|
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383
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|
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384 ls = cycle->listening.elts;
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385 for (i = 0; i < cycle->listening.nelts; i++) {
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386
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|
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387 if (ls[i].rcvbuf != -1) {
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388 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF,
|
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389 (const void *) &ls[i].rcvbuf, sizeof(int))
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390 == -1)
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|
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391 {
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392 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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118
|
393 "setsockopt(SO_RCVBUF, %d) %V failed, ignored",
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|
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394 ls[i].rcvbuf, &ls[i].addr_text);
|
|
112
|
395 }
|
|
|
396 }
|
|
|
397
|
|
|
398 if (ls[i].sndbuf != -1) {
|
|
|
399 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF,
|
|
|
400 (const void *) &ls[i].sndbuf, sizeof(int))
|
|
|
401 == -1)
|
|
|
402 {
|
|
|
403 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
118
|
404 "setsockopt(SO_SNDBUF, %d) %V failed, ignored",
|
|
|
405 ls[i].sndbuf, &ls[i].addr_text);
|
|
112
|
406 }
|
|
|
407 }
|
|
|
408
|
|
184
|
409 #if 0
|
|
|
410 if (1) {
|
|
|
411 int tcp_nodelay = 1;
|
|
|
412
|
|
|
413 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
414 (const void *) &tcp_nodelay, sizeof(int))
|
|
|
415 == -1)
|
|
|
416 {
|
|
|
417 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
418 "setsockopt(TCP_NODELAY) %V failed, ignored",
|
|
|
419 &ls[i].addr_text);
|
|
|
420 }
|
|
|
421 }
|
|
|
422 #endif
|
|
|
423
|
|
112
|
424 if (ls[i].listen) {
|
|
306
|
425
|
|
|
426 /* change backlog via listen() */
|
|
|
427
|
|
112
|
428 if (listen(ls[i].fd, ls[i].backlog) == -1) {
|
|
|
429 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
306
|
430 "listen() to %V, backlog %d failed, ignored",
|
|
112
|
431 &ls[i].addr_text, ls[i].backlog);
|
|
|
432 }
|
|
|
433 }
|
|
|
434
|
|
|
435 /*
|
|
|
436 * setting deferred mode should be last operation on socket,
|
|
|
437 * because code may prematurely continue cycle on failure
|
|
|
438 */
|
|
|
439
|
|
|
440 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
|
|
441
|
|
|
442 #ifdef SO_ACCEPTFILTER
|
|
|
443
|
|
176
|
444 if (ls[i].delete_deferred) {
|
|
|
445 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)
|
|
|
446 == -1)
|
|
112
|
447 {
|
|
|
448 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
449 "setsockopt(SO_ACCEPTFILTER, NULL) "
|
|
|
450 "for %V failed, ignored",
|
|
176
|
451 &ls[i].addr_text);
|
|
112
|
452
|
|
176
|
453 if (ls[i].accept_filter) {
|
|
112
|
454 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
|
455 "could not change the accept filter "
|
|
|
456 "to \"%s\" for %V, ignored",
|
|
176
|
457 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
458 }
|
|
|
459
|
|
|
460 continue;
|
|
|
461 }
|
|
|
462
|
|
176
|
463 ls[i].deferred_accept = 0;
|
|
112
|
464 }
|
|
|
465
|
|
176
|
466 if (ls[i].add_deferred) {
|
|
112
|
467 ngx_memzero(&af, sizeof(struct accept_filter_arg));
|
|
|
468 (void) ngx_cpystrn((u_char *) af.af_name,
|
|
176
|
469 (u_char *) ls[i].accept_filter, 16);
|
|
112
|
470
|
|
176
|
471 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER,
|
|
112
|
472 &af, sizeof(struct accept_filter_arg))
|
|
|
473 == -1)
|
|
|
474 {
|
|
|
475 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
476 "setsockopt(SO_ACCEPTFILTER, \"%s\") "
|
|
|
477 " for %V failed, ignored",
|
|
176
|
478 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
479 continue;
|
|
|
480 }
|
|
|
481
|
|
176
|
482 ls[i].deferred_accept = 1;
|
|
112
|
483 }
|
|
|
484
|
|
|
485 #endif
|
|
|
486
|
|
|
487 #ifdef TCP_DEFER_ACCEPT
|
|
|
488
|
|
176
|
489 if (ls[i].add_deferred || ls[i].delete_deferred) {
|
|
112
|
490
|
|
176
|
491 if (ls[i].add_deferred) {
|
|
|
492 timeout = (int) (ls[i].post_accept_timeout / 1000);
|
|
112
|
493
|
|
|
494 } else {
|
|
|
495 timeout = 0;
|
|
|
496 }
|
|
|
497
|
|
176
|
498 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT,
|
|
112
|
499 &timeout, sizeof(int))
|
|
|
500 == -1)
|
|
|
501 {
|
|
|
502 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
503 "setsockopt(TCP_DEFER_ACCEPT, %d) for %V failed, "
|
|
|
504 "ignored",
|
|
176
|
505 timeout, &ls[i].addr_text);
|
|
112
|
506
|
|
|
507 continue;
|
|
|
508 }
|
|
|
509 }
|
|
|
510
|
|
176
|
511 if (ls[i].add_deferred) {
|
|
|
512 ls[i].deferred_accept = 1;
|
|
112
|
513 }
|
|
|
514
|
|
|
515 #endif
|
|
|
516
|
|
|
517 #endif /* NGX_HAVE_DEFERRED_ACCEPT */
|
|
|
518 }
|
|
|
519
|
|
|
520 return;
|
|
|
521 }
|
|
|
522
|
|
|
523
|
|
|
524 void
|
|
70
|
525 ngx_close_listening_sockets(ngx_cycle_t *cycle)
|
|
0
|
526 {
|
|
92
|
527 ngx_uint_t i;
|
|
|
528 ngx_listening_t *ls;
|
|
|
529 ngx_connection_t *c;
|
|
0
|
530
|
|
|
531 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
|
532 return;
|
|
|
533 }
|
|
|
534
|
|
|
535 ngx_accept_mutex_held = 0;
|
|
160
|
536 ngx_use_accept_mutex = 0;
|
|
0
|
537
|
|
|
538 ls = cycle->listening.elts;
|
|
|
539 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
540
|
|
92
|
541 c = ls[i].connection;
|
|
0
|
542
|
|
362
|
543 if (c->read->active) {
|
|
|
544 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
92
|
545 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
362
|
546
|
|
|
547 } else if (ngx_event_flags & NGX_USE_EPOLL_EVENT) {
|
|
0
|
548
|
|
362
|
549 /*
|
|
|
550 * it seems that Linux-2.6.x OpenVZ sends events
|
|
|
551 * for closed shared listening sockets unless
|
|
|
552 * the events was explicity deleted
|
|
|
553 */
|
|
|
554
|
|
|
555 ngx_del_event(c->read, NGX_READ_EVENT, 0);
|
|
|
556
|
|
|
557 } else {
|
|
92
|
558 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
0
|
559 }
|
|
|
560 }
|
|
|
561
|
|
92
|
562 ngx_free_connection(c);
|
|
|
563
|
|
|
564 c->fd = (ngx_socket_t) -1;
|
|
|
565
|
|
112
|
566 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
|
|
|
567 "close listening %V #%d ", &ls[i].addr_text, ls[i].fd);
|
|
|
568
|
|
92
|
569 if (ngx_close_socket(ls[i].fd) == -1) {
|
|
0
|
570 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
10
|
571 ngx_close_socket_n " %V failed", &ls[i].addr_text);
|
|
0
|
572 }
|
|
92
|
573 }
|
|
|
574 }
|
|
0
|
575
|
|
92
|
576
|
|
|
577 ngx_connection_t *
|
|
|
578 ngx_get_connection(ngx_socket_t s, ngx_log_t *log)
|
|
|
579 {
|
|
110
|
580 ngx_uint_t instance;
|
|
|
581 ngx_event_t *rev, *wev;
|
|
|
582 ngx_connection_t *c;
|
|
92
|
583
|
|
|
584 /* disable warning: Win32 SOCKET is u_int while UNIX socket is int */
|
|
|
585
|
|
|
586 if (ngx_cycle->files && (ngx_uint_t) s >= ngx_cycle->files_n) {
|
|
|
587 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
|
588 "the new socket has number %d, "
|
|
|
589 "but only %ui files are available",
|
|
|
590 s, ngx_cycle->files_n);
|
|
|
591 return NULL;
|
|
|
592 }
|
|
|
593
|
|
|
594 /* ngx_mutex_lock */
|
|
|
595
|
|
|
596 c = ngx_cycle->free_connections;
|
|
|
597
|
|
|
598 if (c == NULL) {
|
|
|
599 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
412
|
600 "%ui worker_connections are not enough",
|
|
92
|
601 ngx_cycle->connection_n);
|
|
|
602
|
|
|
603 /* ngx_mutex_unlock */
|
|
|
604
|
|
|
605 return NULL;
|
|
|
606 }
|
|
|
607
|
|
|
608 ngx_cycle->free_connections = c->data;
|
|
|
609 ngx_cycle->free_connection_n--;
|
|
|
610
|
|
|
611 /* ngx_mutex_unlock */
|
|
|
612
|
|
|
613 if (ngx_cycle->files) {
|
|
|
614 ngx_cycle->files[s] = c;
|
|
|
615 }
|
|
|
616
|
|
110
|
617 rev = c->read;
|
|
|
618 wev = c->write;
|
|
|
619
|
|
|
620 ngx_memzero(c, sizeof(ngx_connection_t));
|
|
|
621
|
|
|
622 c->read = rev;
|
|
|
623 c->write = wev;
|
|
|
624 c->fd = s;
|
|
|
625 c->log = log;
|
|
|
626
|
|
|
627 instance = rev->instance;
|
|
|
628
|
|
|
629 ngx_memzero(rev, sizeof(ngx_event_t));
|
|
|
630 ngx_memzero(wev, sizeof(ngx_event_t));
|
|
|
631
|
|
|
632 rev->instance = !instance;
|
|
|
633 wev->instance = !instance;
|
|
|
634
|
|
|
635 rev->index = NGX_INVALID_INDEX;
|
|
|
636 wev->index = NGX_INVALID_INDEX;
|
|
|
637
|
|
|
638 rev->data = c;
|
|
|
639 wev->data = c;
|
|
|
640
|
|
|
641 wev->write = 1;
|
|
|
642
|
|
92
|
643 return c;
|
|
|
644 }
|
|
|
645
|
|
|
646
|
|
|
647 void
|
|
|
648 ngx_free_connection(ngx_connection_t *c)
|
|
|
649 {
|
|
|
650 /* ngx_mutex_lock */
|
|
|
651
|
|
|
652 c->data = ngx_cycle->free_connections;
|
|
|
653 ngx_cycle->free_connections = c;
|
|
|
654 ngx_cycle->free_connection_n++;
|
|
|
655
|
|
|
656 /* ngx_mutex_unlock */
|
|
|
657
|
|
|
658 if (ngx_cycle->files) {
|
|
|
659 ngx_cycle->files[c->fd] = NULL;
|
|
0
|
660 }
|
|
|
661 }
|
|
|
662
|
|
|
663
|
|
70
|
664 void
|
|
|
665 ngx_close_connection(ngx_connection_t *c)
|
|
0
|
666 {
|
|
366
|
667 ngx_err_t err;
|
|
|
668 ngx_uint_t log_error, level;
|
|
0
|
669 ngx_socket_t fd;
|
|
|
670
|
|
28
|
671 if (c->fd == -1) {
|
|
0
|
672 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
|
|
|
673 return;
|
|
|
674 }
|
|
|
675
|
|
|
676 if (c->read->timer_set) {
|
|
|
677 ngx_del_timer(c->read);
|
|
|
678 }
|
|
126
|
679
|
|
0
|
680 if (c->write->timer_set) {
|
|
|
681 ngx_del_timer(c->write);
|
|
|
682 }
|
|
126
|
683
|
|
0
|
684 if (ngx_del_conn) {
|
|
|
685 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
|
686
|
|
|
687 } else {
|
|
|
688 if (c->read->active || c->read->disabled) {
|
|
|
689 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
690 }
|
|
|
691
|
|
|
692 if (c->write->active || c->write->disabled) {
|
|
|
693 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
|
|
|
694 }
|
|
|
695 }
|
|
|
696
|
|
|
697 #if (NGX_THREADS)
|
|
|
698
|
|
|
699 /*
|
|
|
700 * we have to clean the connection information before the closing
|
|
|
701 * because another thread may reopen the same file descriptor
|
|
|
702 * before we clean the connection
|
|
|
703 */
|
|
|
704
|
|
112
|
705 ngx_mutex_lock(ngx_posted_events_mutex);
|
|
0
|
706
|
|
112
|
707 if (c->read->prev) {
|
|
|
708 ngx_delete_posted_event(c->read);
|
|
|
709 }
|
|
0
|
710
|
|
112
|
711 if (c->write->prev) {
|
|
|
712 ngx_delete_posted_event(c->write);
|
|
|
713 }
|
|
0
|
714
|
|
112
|
715 c->read->closed = 1;
|
|
|
716 c->write->closed = 1;
|
|
0
|
717
|
|
112
|
718 if (c->single_connection) {
|
|
|
719 ngx_unlock(&c->lock);
|
|
|
720 c->read->locked = 0;
|
|
|
721 c->write->locked = 0;
|
|
|
722 }
|
|
0
|
723
|
|
112
|
724 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
0
|
725
|
|
|
726 #else
|
|
|
727
|
|
|
728 if (c->read->prev) {
|
|
|
729 ngx_delete_posted_event(c->read);
|
|
|
730 }
|
|
|
731
|
|
|
732 if (c->write->prev) {
|
|
|
733 ngx_delete_posted_event(c->write);
|
|
|
734 }
|
|
|
735
|
|
|
736 c->read->closed = 1;
|
|
|
737 c->write->closed = 1;
|
|
|
738
|
|
|
739 #endif
|
|
|
740
|
|
366
|
741 log_error = c->log_error;
|
|
|
742
|
|
92
|
743 ngx_free_connection(c);
|
|
|
744
|
|
0
|
745 fd = c->fd;
|
|
|
746 c->fd = (ngx_socket_t) -1;
|
|
|
747
|
|
|
748 if (ngx_close_socket(fd) == -1) {
|
|
|
749
|
|
366
|
750 err = ngx_socket_errno;
|
|
|
751
|
|
|
752 if (err == NGX_ECONNRESET || err == NGX_ENOTCONN) {
|
|
|
753
|
|
|
754 switch (log_error) {
|
|
|
755
|
|
|
756 case NGX_ERROR_INFO:
|
|
|
757 level = NGX_LOG_INFO;
|
|
|
758 break;
|
|
|
759
|
|
|
760 case NGX_ERROR_ERR:
|
|
|
761 level = NGX_LOG_ERR;
|
|
|
762 break;
|
|
|
763
|
|
|
764 default:
|
|
|
765 level = NGX_LOG_CRIT;
|
|
|
766 }
|
|
|
767
|
|
|
768 } else {
|
|
|
769 level = NGX_LOG_CRIT;
|
|
|
770 }
|
|
|
771
|
|
0
|
772 /* we use ngx_cycle->log because c->log was in c->pool */
|
|
|
773
|
|
366
|
774 ngx_log_error(level, ngx_cycle->log, err,
|
|
332
|
775 ngx_close_socket_n " %d failed", fd);
|
|
0
|
776 }
|
|
|
777 }
|
|
|
778
|
|
|
779
|
|
70
|
780 ngx_int_t
|
|
|
781 ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
|
|
0
|
782 {
|
|
|
783 ngx_uint_t level;
|
|
|
784
|
|
|
785 if (err == NGX_ECONNRESET
|
|
|
786 && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
|
|
|
787 {
|
|
|
788 return 0;
|
|
|
789 }
|
|
|
790
|
|
86
|
791 if (err == 0
|
|
|
792 || err == NGX_ECONNRESET
|
|
10
|
793 #if !(NGX_WIN32)
|
|
0
|
794 || err == NGX_EPIPE
|
|
|
795 #endif
|
|
|
796 || err == NGX_ENOTCONN
|
|
136
|
797 || err == NGX_ETIMEDOUT
|
|
0
|
798 || err == NGX_ECONNREFUSED
|
|
364
|
799 || err == NGX_ENETDOWN
|
|
|
800 || err == NGX_ENETUNREACH
|
|
|
801 || err == NGX_EHOSTDOWN
|
|
0
|
802 || err == NGX_EHOSTUNREACH)
|
|
|
803 {
|
|
|
804 switch (c->log_error) {
|
|
|
805
|
|
|
806 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
807 case NGX_ERROR_INFO:
|
|
|
808 level = NGX_LOG_INFO;
|
|
|
809 break;
|
|
|
810
|
|
|
811 case NGX_ERROR_ERR:
|
|
|
812 level = NGX_LOG_ERR;
|
|
|
813 break;
|
|
|
814
|
|
|
815 default:
|
|
366
|
816 level = NGX_LOG_ALERT;
|
|
0
|
817 }
|
|
|
818
|
|
|
819 } else {
|
|
366
|
820 level = NGX_LOG_ALERT;
|
|
0
|
821 }
|
|
|
822
|
|
|
823 ngx_log_error(level, c->log, err, text);
|
|
|
824
|
|
|
825 return NGX_ERROR;
|
|
|
826 }
|
