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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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39 ls->addr_text.data = ngx_palloc(cf->pool,
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40 INET_ADDRSTRLEN - 1 + sizeof(":65535") - 1);
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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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45 len = ngx_inet_ntop(AF_INET, &addr, ls->addr_text.data, INET_ADDRSTRLEN);
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10
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46
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47 ls->addr_text.len = ngx_sprintf(ls->addr_text.data + len, ":%d", port)
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48 - ls->addr_text.data;
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49
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0
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50 ls->fd = (ngx_socket_t) -1;
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51 ls->family = AF_INET;
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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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56 ls->addr_text_max_len = INET_ADDRSTRLEN;
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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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0
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107 ls[i].addr_text_max_len = INET_ADDRSTRLEN;
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108
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10
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109 ls[i].addr_text.data = ngx_palloc(cycle->pool, INET_ADDRSTRLEN - 1
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110 + 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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28
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115 ls[i].family = sin->sin_family;
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10
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116 len = ngx_sock_ntop(ls[i].family, ls[i].sockaddr,
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117 ls[i].addr_text.data, INET_ADDRSTRLEN);
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118 if (len == 0) {
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0
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119 return NGX_ERROR;
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120 }
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10
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121
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122 ls[i].addr_text.len = ngx_sprintf(ls[i].addr_text.data + len, ":%d",
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28
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123 ntohs(sin->sin_port))
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10
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124 - ls[i].addr_text.data;
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72
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125
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326
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126 ls[i].backlog = NGX_LISTEN_BACKLOG;
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86
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127
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112
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128 olen = sizeof(int);
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129
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130 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF, (void *) &ls[i].rcvbuf,
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131 &olen)
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132 == -1)
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133 {
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134 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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135 "getsockopt(SO_RCVBUF) %V failed, ignored",
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136 &ls[i].addr_text);
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137
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138 ls[i].rcvbuf = -1;
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139 }
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140
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141 olen = sizeof(int);
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142
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143 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF, (void *) &ls[i].sndbuf,
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144 &olen)
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145 == -1)
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146 {
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147 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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148 "getsockopt(SO_SNDBUF) %V failed, ignored",
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149 &ls[i].addr_text);
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150
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151 ls[i].sndbuf = -1;
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152 }
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153
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72
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154 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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155
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156 ngx_memzero(&af, sizeof(struct accept_filter_arg));
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112
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157 olen = sizeof(struct accept_filter_arg);
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72
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158
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112
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159 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, &af, &olen)
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72
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160 == -1)
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161 {
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90
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162 err = ngx_errno;
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163
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164 if (err == NGX_EINVAL) {
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165 continue;
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166 }
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167
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168 ngx_log_error(NGX_LOG_NOTICE, cycle->log, err,
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72
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169 "getsockopt(SO_ACCEPTFILTER) for %V failed, ignored",
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170 &ls[i].addr_text);
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171 continue;
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172 }
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173
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112
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174 if (olen < sizeof(struct accept_filter_arg) || af.af_name[0] == '\0') {
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72
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175 continue;
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176 }
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177
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178 ls[i].accept_filter = ngx_palloc(cycle->pool, 16);
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179 if (ls[i].accept_filter == NULL) {
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180 return NGX_ERROR;
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181 }
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182
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183 (void) ngx_cpystrn((u_char *) ls[i].accept_filter,
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184 (u_char *) af.af_name, 16);
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185 #endif
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186
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187 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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188
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189 timeout = 0;
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112
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190 olen = sizeof(int);
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72
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191
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112
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192 if (getsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, &olen)
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72
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193 == -1)
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194 {
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195 ngx_log_error(NGX_LOG_NOTICE, cycle->log, ngx_errno,
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196 "getsockopt(TCP_DEFER_ACCEPT) for %V failed, ignored",
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197 &ls[i].addr_text);
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198 continue;
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199 }
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200
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114
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201 if (olen < sizeof(int) || timeout == 0) {
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72
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202 continue;
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203 }
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204
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205 ls[i].deferred_accept = 1;
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206 #endif
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0
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207 }
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208
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209 return NGX_OK;
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210 }
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211
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212
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70
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213 ngx_int_t
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214 ngx_open_listening_sockets(ngx_cycle_t *cycle)
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0
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215 {
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112
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216 int reuseaddr;
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217 ngx_uint_t i, tries, failed;
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0
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218 ngx_err_t err;
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219 ngx_log_t *log;
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220 ngx_socket_t s;
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221 ngx_listening_t *ls;
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222
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223 reuseaddr = 1;
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224 #if (NGX_SUPPRESS_WARN)
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225 failed = 0;
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226 #endif
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227
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228 log = cycle->log;
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229
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112
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230 /* TODO: configurable try number */
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0
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231
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376
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232 for (tries = 5; tries; tries--) {
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0
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233 failed = 0;
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234
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235 /* for each listening socket */
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236
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237 ls = cycle->listening.elts;
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238 for (i = 0; i < cycle->listening.nelts; i++) {
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239
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240 if (ls[i].ignore) {
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241 continue;
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242 }
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243
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244 if (ls[i].fd != -1) {
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245 continue;
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246 }
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247
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248 if (ls[i].inherited) {
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249
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250 /* TODO: close on exit */
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251 /* TODO: nonblocking */
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252 /* TODO: deferred accept */
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253
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254 continue;
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255 }
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256
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28
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257 s = ngx_socket(ls[i].family, ls[i].type, 0);
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0
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258
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259 if (s == -1) {
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260 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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261 ngx_socket_n " %V failed", &ls[i].addr_text);
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0
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262 return NGX_ERROR;
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263 }
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264
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265 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
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112
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266 (const void *) &reuseaddr, sizeof(int))
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267 == -1)
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268 {
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0
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269 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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270 "setsockopt(SO_REUSEADDR) %V failed",
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271 &ls[i].addr_text);
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112
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272
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306
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273 if (ngx_close_socket(s) == -1) {
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112
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274 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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275 ngx_close_socket_n " %V failed",
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276 &ls[i].addr_text);
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306
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277 }
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112
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278
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0
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279 return NGX_ERROR;
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280 }
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281
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282 /* TODO: close on exit */
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283
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284 if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
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285 if (ngx_nonblocking(s) == -1) {
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286 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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287 ngx_nonblocking_n " %V failed",
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288 &ls[i].addr_text);
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112
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289
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306
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290 if (ngx_close_socket(s) == -1) {
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112
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291 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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292 ngx_close_socket_n " %V failed",
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293 &ls[i].addr_text);
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306
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294 }
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112
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295
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0
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296 return NGX_ERROR;
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297 }
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298 }
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299
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142
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300 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
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301 "bind() %V #%d ", &ls[i].addr_text, s);
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302
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0
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303 if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
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304 err = ngx_socket_errno;
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112
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305
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306 if (err == NGX_EADDRINUSE && ngx_test_config) {
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307 continue;
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308 }
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309
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0
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310 ngx_log_error(NGX_LOG_EMERG, log, err,
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10
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311 "bind() to %V failed", &ls[i].addr_text);
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0
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312
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306
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313 if (ngx_close_socket(s) == -1) {
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0
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314 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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315 ngx_close_socket_n " %V failed",
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316 &ls[i].addr_text);
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306
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317 }
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0
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318
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112
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319 if (err != NGX_EADDRINUSE) {
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320 return NGX_ERROR;
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321 }
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322
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0
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323 failed = 1;
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112
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324
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0
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325 continue;
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326 }
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327
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306
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328 if (listen(s, ls[i].backlog) == -1) {
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329 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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330 "listen() to %V, backlog %d failed",
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331 &ls[i].addr_text, ls[i].backlog);
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332
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333 if (ngx_close_socket(s) == -1) {
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334 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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335 ngx_close_socket_n " %V failed",
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336 &ls[i].addr_text);
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337 }
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338
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339 return NGX_ERROR;
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340 }
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341
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112
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342 ls[i].listen = 1;
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0
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343
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|
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344 ls[i].fd = s;
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345 }
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346
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112
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347 if (!failed) {
|
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0
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348 break;
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112
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349 }
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0
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350
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|
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351 /* TODO: delay configurable */
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352
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353 ngx_log_error(NGX_LOG_NOTICE, log, 0,
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354 "try again to bind() after 500ms");
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112
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355
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0
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356 ngx_msleep(500);
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357 }
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358
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|
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359 if (failed) {
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26
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360 ngx_log_error(NGX_LOG_EMERG, log, 0, "still could not bind()");
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0
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361 return NGX_ERROR;
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362 }
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363
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364 return NGX_OK;
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365 }
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366
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367
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70
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368 void
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112
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369 ngx_configure_listening_socket(ngx_cycle_t *cycle)
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|
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370 {
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371 ngx_uint_t i;
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372 ngx_listening_t *ls;
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373
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374 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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375 struct accept_filter_arg af;
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376 #endif
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377 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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378 int timeout;
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379 #endif
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380
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|
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381 ls = cycle->listening.elts;
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382 for (i = 0; i < cycle->listening.nelts; i++) {
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383
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|
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384 if (ls[i].rcvbuf != -1) {
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385 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF,
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386 (const void *) &ls[i].rcvbuf, sizeof(int))
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387 == -1)
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388 {
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389 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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118
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390 "setsockopt(SO_RCVBUF, %d) %V failed, ignored",
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|
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391 ls[i].rcvbuf, &ls[i].addr_text);
|
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112
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392 }
|
|
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393 }
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394
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|
|
395 if (ls[i].sndbuf != -1) {
|
|
|
396 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF,
|
|
|
397 (const void *) &ls[i].sndbuf, sizeof(int))
|
|
|
398 == -1)
|
|
|
399 {
|
|
|
400 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
118
|
401 "setsockopt(SO_SNDBUF, %d) %V failed, ignored",
|
|
|
402 ls[i].sndbuf, &ls[i].addr_text);
|
|
112
|
403 }
|
|
|
404 }
|
|
|
405
|
|
184
|
406 #if 0
|
|
|
407 if (1) {
|
|
|
408 int tcp_nodelay = 1;
|
|
|
409
|
|
|
410 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
411 (const void *) &tcp_nodelay, sizeof(int))
|
|
|
412 == -1)
|
|
|
413 {
|
|
|
414 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
415 "setsockopt(TCP_NODELAY) %V failed, ignored",
|
|
|
416 &ls[i].addr_text);
|
|
|
417 }
|
|
|
418 }
|
|
|
419 #endif
|
|
|
420
|
|
112
|
421 if (ls[i].listen) {
|
|
306
|
422
|
|
|
423 /* change backlog via listen() */
|
|
|
424
|
|
112
|
425 if (listen(ls[i].fd, ls[i].backlog) == -1) {
|
|
|
426 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
306
|
427 "listen() to %V, backlog %d failed, ignored",
|
|
112
|
428 &ls[i].addr_text, ls[i].backlog);
|
|
|
429 }
|
|
|
430 }
|
|
|
431
|
|
|
432 /*
|
|
|
433 * setting deferred mode should be last operation on socket,
|
|
|
434 * because code may prematurely continue cycle on failure
|
|
|
435 */
|
|
|
436
|
|
|
437 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
|
|
438
|
|
|
439 #ifdef SO_ACCEPTFILTER
|
|
|
440
|
|
176
|
441 if (ls[i].delete_deferred) {
|
|
|
442 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)
|
|
|
443 == -1)
|
|
112
|
444 {
|
|
|
445 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
446 "setsockopt(SO_ACCEPTFILTER, NULL) "
|
|
|
447 "for %V failed, ignored",
|
|
176
|
448 &ls[i].addr_text);
|
|
112
|
449
|
|
176
|
450 if (ls[i].accept_filter) {
|
|
112
|
451 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
|
452 "could not change the accept filter "
|
|
|
453 "to \"%s\" for %V, ignored",
|
|
176
|
454 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
455 }
|
|
|
456
|
|
|
457 continue;
|
|
|
458 }
|
|
|
459
|
|
176
|
460 ls[i].deferred_accept = 0;
|
|
112
|
461 }
|
|
|
462
|
|
176
|
463 if (ls[i].add_deferred) {
|
|
112
|
464 ngx_memzero(&af, sizeof(struct accept_filter_arg));
|
|
|
465 (void) ngx_cpystrn((u_char *) af.af_name,
|
|
176
|
466 (u_char *) ls[i].accept_filter, 16);
|
|
112
|
467
|
|
176
|
468 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER,
|
|
112
|
469 &af, sizeof(struct accept_filter_arg))
|
|
|
470 == -1)
|
|
|
471 {
|
|
|
472 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
473 "setsockopt(SO_ACCEPTFILTER, \"%s\") "
|
|
|
474 " for %V failed, ignored",
|
|
176
|
475 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
476 continue;
|
|
|
477 }
|
|
|
478
|
|
176
|
479 ls[i].deferred_accept = 1;
|
|
112
|
480 }
|
|
|
481
|
|
|
482 #endif
|
|
|
483
|
|
|
484 #ifdef TCP_DEFER_ACCEPT
|
|
|
485
|
|
176
|
486 if (ls[i].add_deferred || ls[i].delete_deferred) {
|
|
112
|
487
|
|
176
|
488 if (ls[i].add_deferred) {
|
|
|
489 timeout = (int) (ls[i].post_accept_timeout / 1000);
|
|
112
|
490
|
|
|
491 } else {
|
|
|
492 timeout = 0;
|
|
|
493 }
|
|
|
494
|
|
176
|
495 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT,
|
|
112
|
496 &timeout, sizeof(int))
|
|
|
497 == -1)
|
|
|
498 {
|
|
|
499 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
500 "setsockopt(TCP_DEFER_ACCEPT, %d) for %V failed, "
|
|
|
501 "ignored",
|
|
176
|
502 timeout, &ls[i].addr_text);
|
|
112
|
503
|
|
|
504 continue;
|
|
|
505 }
|
|
|
506 }
|
|
|
507
|
|
176
|
508 if (ls[i].add_deferred) {
|
|
|
509 ls[i].deferred_accept = 1;
|
|
112
|
510 }
|
|
|
511
|
|
|
512 #endif
|
|
|
513
|
|
|
514 #endif /* NGX_HAVE_DEFERRED_ACCEPT */
|
|
|
515 }
|
|
|
516
|
|
|
517 return;
|
|
|
518 }
|
|
|
519
|
|
|
520
|
|
|
521 void
|
|
70
|
522 ngx_close_listening_sockets(ngx_cycle_t *cycle)
|
|
0
|
523 {
|
|
92
|
524 ngx_uint_t i;
|
|
|
525 ngx_listening_t *ls;
|
|
|
526 ngx_connection_t *c;
|
|
0
|
527
|
|
|
528 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
|
529 return;
|
|
|
530 }
|
|
|
531
|
|
|
532 ngx_accept_mutex_held = 0;
|
|
160
|
533 ngx_use_accept_mutex = 0;
|
|
0
|
534
|
|
|
535 ls = cycle->listening.elts;
|
|
|
536 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
537
|
|
92
|
538 c = ls[i].connection;
|
|
0
|
539
|
|
362
|
540 if (c->read->active) {
|
|
|
541 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
92
|
542 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
362
|
543
|
|
|
544 } else if (ngx_event_flags & NGX_USE_EPOLL_EVENT) {
|
|
0
|
545
|
|
362
|
546 /*
|
|
|
547 * it seems that Linux-2.6.x OpenVZ sends events
|
|
|
548 * for closed shared listening sockets unless
|
|
|
549 * the events was explicity deleted
|
|
|
550 */
|
|
|
551
|
|
|
552 ngx_del_event(c->read, NGX_READ_EVENT, 0);
|
|
|
553
|
|
|
554 } else {
|
|
92
|
555 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
0
|
556 }
|
|
|
557 }
|
|
|
558
|
|
92
|
559 ngx_free_connection(c);
|
|
|
560
|
|
|
561 c->fd = (ngx_socket_t) -1;
|
|
|
562
|
|
112
|
563 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
|
|
|
564 "close listening %V #%d ", &ls[i].addr_text, ls[i].fd);
|
|
|
565
|
|
92
|
566 if (ngx_close_socket(ls[i].fd) == -1) {
|
|
0
|
567 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
10
|
568 ngx_close_socket_n " %V failed", &ls[i].addr_text);
|
|
0
|
569 }
|
|
92
|
570 }
|
|
|
571 }
|
|
0
|
572
|
|
92
|
573
|
|
|
574 ngx_connection_t *
|
|
|
575 ngx_get_connection(ngx_socket_t s, ngx_log_t *log)
|
|
|
576 {
|
|
110
|
577 ngx_uint_t instance;
|
|
|
578 ngx_event_t *rev, *wev;
|
|
|
579 ngx_connection_t *c;
|
|
92
|
580
|
|
|
581 /* disable warning: Win32 SOCKET is u_int while UNIX socket is int */
|
|
|
582
|
|
|
583 if (ngx_cycle->files && (ngx_uint_t) s >= ngx_cycle->files_n) {
|
|
|
584 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
|
585 "the new socket has number %d, "
|
|
|
586 "but only %ui files are available",
|
|
|
587 s, ngx_cycle->files_n);
|
|
|
588 return NULL;
|
|
|
589 }
|
|
|
590
|
|
|
591 /* ngx_mutex_lock */
|
|
|
592
|
|
|
593 c = ngx_cycle->free_connections;
|
|
|
594
|
|
|
595 if (c == NULL) {
|
|
|
596 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
|
597 "%ui worker_connections is not enough",
|
|
|
598 ngx_cycle->connection_n);
|
|
|
599
|
|
|
600 /* ngx_mutex_unlock */
|
|
|
601
|
|
|
602 return NULL;
|
|
|
603 }
|
|
|
604
|
|
|
605 ngx_cycle->free_connections = c->data;
|
|
|
606 ngx_cycle->free_connection_n--;
|
|
|
607
|
|
|
608 /* ngx_mutex_unlock */
|
|
|
609
|
|
|
610 if (ngx_cycle->files) {
|
|
|
611 ngx_cycle->files[s] = c;
|
|
|
612 }
|
|
|
613
|
|
110
|
614 rev = c->read;
|
|
|
615 wev = c->write;
|
|
|
616
|
|
|
617 ngx_memzero(c, sizeof(ngx_connection_t));
|
|
|
618
|
|
|
619 c->read = rev;
|
|
|
620 c->write = wev;
|
|
|
621 c->fd = s;
|
|
|
622 c->log = log;
|
|
|
623
|
|
|
624 instance = rev->instance;
|
|
|
625
|
|
|
626 ngx_memzero(rev, sizeof(ngx_event_t));
|
|
|
627 ngx_memzero(wev, sizeof(ngx_event_t));
|
|
|
628
|
|
|
629 rev->instance = !instance;
|
|
|
630 wev->instance = !instance;
|
|
|
631
|
|
|
632 rev->index = NGX_INVALID_INDEX;
|
|
|
633 wev->index = NGX_INVALID_INDEX;
|
|
|
634
|
|
|
635 rev->data = c;
|
|
|
636 wev->data = c;
|
|
|
637
|
|
|
638 wev->write = 1;
|
|
|
639
|
|
92
|
640 return c;
|
|
|
641 }
|
|
|
642
|
|
|
643
|
|
|
644 void
|
|
|
645 ngx_free_connection(ngx_connection_t *c)
|
|
|
646 {
|
|
|
647 /* ngx_mutex_lock */
|
|
|
648
|
|
|
649 c->data = ngx_cycle->free_connections;
|
|
|
650 ngx_cycle->free_connections = c;
|
|
|
651 ngx_cycle->free_connection_n++;
|
|
|
652
|
|
|
653 /* ngx_mutex_unlock */
|
|
|
654
|
|
|
655 if (ngx_cycle->files) {
|
|
|
656 ngx_cycle->files[c->fd] = NULL;
|
|
0
|
657 }
|
|
|
658 }
|
|
|
659
|
|
|
660
|
|
70
|
661 void
|
|
|
662 ngx_close_connection(ngx_connection_t *c)
|
|
0
|
663 {
|
|
366
|
664 ngx_err_t err;
|
|
|
665 ngx_uint_t log_error, level;
|
|
0
|
666 ngx_socket_t fd;
|
|
|
667
|
|
28
|
668 if (c->fd == -1) {
|
|
0
|
669 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
|
|
|
670 return;
|
|
|
671 }
|
|
|
672
|
|
|
673 if (c->read->timer_set) {
|
|
|
674 ngx_del_timer(c->read);
|
|
|
675 }
|
|
126
|
676
|
|
0
|
677 if (c->write->timer_set) {
|
|
|
678 ngx_del_timer(c->write);
|
|
|
679 }
|
|
126
|
680
|
|
0
|
681 if (ngx_del_conn) {
|
|
|
682 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
|
683
|
|
|
684 } else {
|
|
|
685 if (c->read->active || c->read->disabled) {
|
|
|
686 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
687 }
|
|
|
688
|
|
|
689 if (c->write->active || c->write->disabled) {
|
|
|
690 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
|
|
|
691 }
|
|
|
692 }
|
|
|
693
|
|
|
694 #if (NGX_THREADS)
|
|
|
695
|
|
|
696 /*
|
|
|
697 * we have to clean the connection information before the closing
|
|
|
698 * because another thread may reopen the same file descriptor
|
|
|
699 * before we clean the connection
|
|
|
700 */
|
|
|
701
|
|
112
|
702 ngx_mutex_lock(ngx_posted_events_mutex);
|
|
0
|
703
|
|
112
|
704 if (c->read->prev) {
|
|
|
705 ngx_delete_posted_event(c->read);
|
|
|
706 }
|
|
0
|
707
|
|
112
|
708 if (c->write->prev) {
|
|
|
709 ngx_delete_posted_event(c->write);
|
|
|
710 }
|
|
0
|
711
|
|
112
|
712 c->read->closed = 1;
|
|
|
713 c->write->closed = 1;
|
|
0
|
714
|
|
112
|
715 if (c->single_connection) {
|
|
|
716 ngx_unlock(&c->lock);
|
|
|
717 c->read->locked = 0;
|
|
|
718 c->write->locked = 0;
|
|
|
719 }
|
|
0
|
720
|
|
112
|
721 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
0
|
722
|
|
|
723 #else
|
|
|
724
|
|
|
725 if (c->read->prev) {
|
|
|
726 ngx_delete_posted_event(c->read);
|
|
|
727 }
|
|
|
728
|
|
|
729 if (c->write->prev) {
|
|
|
730 ngx_delete_posted_event(c->write);
|
|
|
731 }
|
|
|
732
|
|
|
733 c->read->closed = 1;
|
|
|
734 c->write->closed = 1;
|
|
|
735
|
|
|
736 #endif
|
|
|
737
|
|
366
|
738 log_error = c->log_error;
|
|
|
739
|
|
92
|
740 ngx_free_connection(c);
|
|
|
741
|
|
0
|
742 fd = c->fd;
|
|
|
743 c->fd = (ngx_socket_t) -1;
|
|
|
744
|
|
|
745 if (ngx_close_socket(fd) == -1) {
|
|
|
746
|
|
366
|
747 err = ngx_socket_errno;
|
|
|
748
|
|
|
749 if (err == NGX_ECONNRESET || err == NGX_ENOTCONN) {
|
|
|
750
|
|
|
751 switch (log_error) {
|
|
|
752
|
|
|
753 case NGX_ERROR_INFO:
|
|
|
754 level = NGX_LOG_INFO;
|
|
|
755 break;
|
|
|
756
|
|
|
757 case NGX_ERROR_ERR:
|
|
|
758 level = NGX_LOG_ERR;
|
|
|
759 break;
|
|
|
760
|
|
|
761 default:
|
|
|
762 level = NGX_LOG_CRIT;
|
|
|
763 }
|
|
|
764
|
|
|
765 } else {
|
|
|
766 level = NGX_LOG_CRIT;
|
|
|
767 }
|
|
|
768
|
|
0
|
769 /* we use ngx_cycle->log because c->log was in c->pool */
|
|
|
770
|
|
366
|
771 ngx_log_error(level, ngx_cycle->log, err,
|
|
332
|
772 ngx_close_socket_n " %d failed", fd);
|
|
0
|
773 }
|
|
|
774 }
|
|
|
775
|
|
|
776
|
|
70
|
777 ngx_int_t
|
|
|
778 ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
|
|
0
|
779 {
|
|
|
780 ngx_uint_t level;
|
|
|
781
|
|
|
782 if (err == NGX_ECONNRESET
|
|
|
783 && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
|
|
|
784 {
|
|
|
785 return 0;
|
|
|
786 }
|
|
|
787
|
|
86
|
788 if (err == 0
|
|
|
789 || err == NGX_ECONNRESET
|
|
10
|
790 #if !(NGX_WIN32)
|
|
0
|
791 || err == NGX_EPIPE
|
|
|
792 #endif
|
|
|
793 || err == NGX_ENOTCONN
|
|
136
|
794 || err == NGX_ETIMEDOUT
|
|
0
|
795 || err == NGX_ECONNREFUSED
|
|
364
|
796 || err == NGX_ENETDOWN
|
|
|
797 || err == NGX_ENETUNREACH
|
|
|
798 || err == NGX_EHOSTDOWN
|
|
0
|
799 || err == NGX_EHOSTUNREACH)
|
|
|
800 {
|
|
|
801 switch (c->log_error) {
|
|
|
802
|
|
|
803 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
804 case NGX_ERROR_INFO:
|
|
|
805 level = NGX_LOG_INFO;
|
|
|
806 break;
|
|
|
807
|
|
|
808 case NGX_ERROR_ERR:
|
|
|
809 level = NGX_LOG_ERR;
|
|
|
810 break;
|
|
|
811
|
|
|
812 default:
|
|
366
|
813 level = NGX_LOG_ALERT;
|
|
0
|
814 }
|
|
|
815
|
|
|
816 } else {
|
|
366
|
817 level = NGX_LOG_ALERT;
|
|
0
|
818 }
|
|
|
819
|
|
|
820 ngx_log_error(level, c->log, err, text);
|
|
|
821
|
|
|
822 return NGX_ERROR;
|
|
|
823 }
|
