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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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486
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16 ngx_create_listening(ngx_conf_t *cf, void *sockaddr, socklen_t socklen)
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0
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17 {
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486
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18 ngx_listening_t *ls;
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19 struct sockaddr *sa;
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20 u_char text[NGX_SOCKADDR_STRLEN];
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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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486
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29 sa = ngx_palloc(cf->pool, socklen);
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30 if (sa == 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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486
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34 ngx_memcpy(sa, sockaddr, socklen);
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0
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35
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486
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36 ls->sockaddr = sa;
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37 ls->socklen = socklen;
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10
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38
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486
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39 ls->addr_text.len = ngx_sock_ntop(sa, text, NGX_SOCKADDR_STRLEN, 1);
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40
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41 ls->addr_text.data = ngx_pnalloc(cf->pool, ls->addr_text.len);
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10
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42 if (ls->addr_text.data == NULL) {
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0
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43 return NULL;
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44 }
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45
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486
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46 ngx_memcpy(ls->addr_text.data, text, ls->addr_text.len);
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10
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47
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0
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48 ls->fd = (ngx_socket_t) -1;
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49 ls->type = SOCK_STREAM;
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486
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50
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51 switch (ls->sockaddr->sa_family) {
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52 #if (NGX_HAVE_INET6)
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53 case AF_INET6:
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54 ls->addr_text_max_len = NGX_INET6_ADDRSTRLEN;
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55 break;
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56 #endif
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57 case AF_INET:
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58 ls->addr_text_max_len = NGX_INET_ADDRSTRLEN;
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59 break;
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60 default:
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61 ls->addr_text_max_len = NGX_SOCKADDR_STRLEN;
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62 break;
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63 }
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64
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65 ls->backlog = NGX_LISTEN_BACKLOG;
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66 ls->rcvbuf = -1;
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67 ls->sndbuf = -1;
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0
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68
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69 return ls;
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70 }
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71
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72
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70
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73 ngx_int_t
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74 ngx_set_inherited_sockets(ngx_cycle_t *cycle)
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0
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75 {
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72
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76 size_t len;
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77 ngx_uint_t i;
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78 ngx_listening_t *ls;
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112
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79 socklen_t olen;
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72
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80 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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90
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81 ngx_err_t err;
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72
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82 struct accept_filter_arg af;
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83 #endif
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84 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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85 int timeout;
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86 #endif
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0
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87
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88 ls = cycle->listening.elts;
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89 for (i = 0; i < cycle->listening.nelts; i++) {
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90
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91 /* AF_INET only */
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92
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93 ls[i].sockaddr = ngx_palloc(cycle->pool, sizeof(struct sockaddr_in));
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94 if (ls[i].sockaddr == NULL) {
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95 return NGX_ERROR;
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96 }
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97
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98 ls[i].socklen = sizeof(struct sockaddr_in);
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99 if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
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100 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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101 "getsockname() of the inherited "
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102 "socket #%d failed", 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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106
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448
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107 switch (ls[i].sockaddr->sa_family) {
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0
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108
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448
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109 #if (NGX_HAVE_INET6)
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110 case AF_INET6:
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111 ls[i].addr_text_max_len = NGX_INET6_ADDRSTRLEN;
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112 break;
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113 #endif
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114
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115 case AF_INET:
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116 ls[i].addr_text_max_len = NGX_INET_ADDRSTRLEN;
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117 break;
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118
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119 default:
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0
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120 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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121 "the inherited socket #%d has "
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448
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122 "an unsupported protocol family", ls[i].fd);
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0
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123 ls[i].ignore = 1;
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124 continue;
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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 len = ls[i].addr_text_max_len + sizeof(":65535") - 1;
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0
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128
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448
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129 ls[i].addr_text.data = ngx_pnalloc(cycle->pool, len);
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0
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130 if (ls[i].addr_text.data == NULL) {
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131 return NGX_ERROR;
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132 }
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133
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448
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134 len = ngx_sock_ntop(ls[i].sockaddr, ls[i].addr_text.data, len, 1);
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10
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135 if (len == 0) {
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0
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136 return NGX_ERROR;
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137 }
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10
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138
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448
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139 ls[i].addr_text.len = len;
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72
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140
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326
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141 ls[i].backlog = NGX_LISTEN_BACKLOG;
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86
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142
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112
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143 olen = sizeof(int);
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144
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145 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF, (void *) &ls[i].rcvbuf,
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146 &olen)
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147 == -1)
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148 {
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149 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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150 "getsockopt(SO_RCVBUF) %V failed, ignored",
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151 &ls[i].addr_text);
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152
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153 ls[i].rcvbuf = -1;
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154 }
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155
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156 olen = sizeof(int);
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157
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158 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF, (void *) &ls[i].sndbuf,
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159 &olen)
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160 == -1)
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161 {
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162 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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163 "getsockopt(SO_SNDBUF) %V failed, ignored",
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164 &ls[i].addr_text);
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165
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166 ls[i].sndbuf = -1;
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167 }
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168
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72
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169 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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170
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171 ngx_memzero(&af, sizeof(struct accept_filter_arg));
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112
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172 olen = sizeof(struct accept_filter_arg);
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72
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173
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112
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174 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, &af, &olen)
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72
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175 == -1)
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176 {
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90
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177 err = ngx_errno;
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178
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179 if (err == NGX_EINVAL) {
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180 continue;
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181 }
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182
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183 ngx_log_error(NGX_LOG_NOTICE, cycle->log, err,
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72
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184 "getsockopt(SO_ACCEPTFILTER) for %V failed, ignored",
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185 &ls[i].addr_text);
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186 continue;
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187 }
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188
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112
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189 if (olen < sizeof(struct accept_filter_arg) || af.af_name[0] == '\0') {
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72
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190 continue;
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191 }
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192
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193 ls[i].accept_filter = ngx_palloc(cycle->pool, 16);
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194 if (ls[i].accept_filter == NULL) {
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195 return NGX_ERROR;
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196 }
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197
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198 (void) ngx_cpystrn((u_char *) ls[i].accept_filter,
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199 (u_char *) af.af_name, 16);
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200 #endif
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201
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202 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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203
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204 timeout = 0;
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112
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205 olen = sizeof(int);
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72
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206
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112
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207 if (getsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, &olen)
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72
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208 == -1)
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209 {
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210 ngx_log_error(NGX_LOG_NOTICE, cycle->log, ngx_errno,
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211 "getsockopt(TCP_DEFER_ACCEPT) for %V failed, ignored",
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212 &ls[i].addr_text);
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213 continue;
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214 }
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215
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114
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216 if (olen < sizeof(int) || timeout == 0) {
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72
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217 continue;
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218 }
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219
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220 ls[i].deferred_accept = 1;
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221 #endif
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0
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222 }
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223
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224 return NGX_OK;
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225 }
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226
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227
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70
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228 ngx_int_t
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229 ngx_open_listening_sockets(ngx_cycle_t *cycle)
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0
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230 {
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112
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231 int reuseaddr;
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232 ngx_uint_t i, tries, failed;
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0
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233 ngx_err_t err;
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234 ngx_log_t *log;
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235 ngx_socket_t s;
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236 ngx_listening_t *ls;
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237
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238 reuseaddr = 1;
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239 #if (NGX_SUPPRESS_WARN)
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240 failed = 0;
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241 #endif
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242
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243 log = cycle->log;
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244
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112
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245 /* TODO: configurable try number */
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0
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246
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378
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247 for (tries = 5; tries; tries--) {
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0
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248 failed = 0;
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249
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250 /* for each listening socket */
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251
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252 ls = cycle->listening.elts;
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253 for (i = 0; i < cycle->listening.nelts; i++) {
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254
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255 if (ls[i].ignore) {
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256 continue;
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257 }
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258
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259 if (ls[i].fd != -1) {
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260 continue;
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261 }
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262
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263 if (ls[i].inherited) {
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264
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265 /* TODO: close on exit */
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266 /* TODO: nonblocking */
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267 /* TODO: deferred accept */
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268
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269 continue;
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270 }
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271
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400
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272 s = ngx_socket(ls[i].sockaddr->sa_family, ls[i].type, 0);
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0
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273
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274 if (s == -1) {
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275 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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276 ngx_socket_n " %V failed", &ls[i].addr_text);
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0
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277 return NGX_ERROR;
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278 }
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279
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280 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
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112
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281 (const void *) &reuseaddr, sizeof(int))
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282 == -1)
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283 {
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0
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284 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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285 "setsockopt(SO_REUSEADDR) %V failed",
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286 &ls[i].addr_text);
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112
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287
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306
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288 if (ngx_close_socket(s) == -1) {
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112
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289 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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290 ngx_close_socket_n " %V failed",
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291 &ls[i].addr_text);
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306
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292 }
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112
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293
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0
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294 return NGX_ERROR;
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295 }
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296
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460
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297 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
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298
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299 if (ls[i].sockaddr->sa_family == AF_INET6 && ls[i].ipv6only) {
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300 int ipv6only;
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301
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302 ipv6only = (ls[i].ipv6only == 1);
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303
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304 if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
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305 (const void *) &ipv6only, sizeof(int))
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306 == -1)
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307 {
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486
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308 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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460
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309 "setsockopt(IPV6_V6ONLY) %V failed, ignored",
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310 &ls[i].addr_text);
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311 }
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312 }
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313 #endif
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0
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314 /* TODO: close on exit */
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315
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316 if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
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317 if (ngx_nonblocking(s) == -1) {
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318 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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319 ngx_nonblocking_n " %V failed",
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320 &ls[i].addr_text);
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112
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321
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306
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322 if (ngx_close_socket(s) == -1) {
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112
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323 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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324 ngx_close_socket_n " %V failed",
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325 &ls[i].addr_text);
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306
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326 }
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112
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327
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0
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328 return NGX_ERROR;
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329 }
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330 }
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331
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486
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332 ngx_log_debug2(NGX_LOG_DEBUG_CORE, log, 0,
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142
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333 "bind() %V #%d ", &ls[i].addr_text, s);
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334
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0
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335 if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
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336 err = ngx_socket_errno;
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112
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337
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|
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338 if (err == NGX_EADDRINUSE && ngx_test_config) {
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339 continue;
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340 }
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341
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0
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342 ngx_log_error(NGX_LOG_EMERG, log, err,
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10
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343 "bind() to %V failed", &ls[i].addr_text);
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0
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344
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306
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345 if (ngx_close_socket(s) == -1) {
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0
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346 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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347 ngx_close_socket_n " %V failed",
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348 &ls[i].addr_text);
|
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306
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349 }
|
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0
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350
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|
112
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351 if (err != NGX_EADDRINUSE) {
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352 return NGX_ERROR;
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353 }
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354
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0
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355 failed = 1;
|
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112
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356
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0
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357 continue;
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358 }
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359
|
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306
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360 if (listen(s, ls[i].backlog) == -1) {
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361 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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362 "listen() to %V, backlog %d failed",
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363 &ls[i].addr_text, ls[i].backlog);
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364
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|
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365 if (ngx_close_socket(s) == -1) {
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366 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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367 ngx_close_socket_n " %V failed",
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368 &ls[i].addr_text);
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369 }
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370
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|
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371 return NGX_ERROR;
|
|
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372 }
|
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373
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112
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374 ls[i].listen = 1;
|
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0
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375
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|
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376 ls[i].fd = s;
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|
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377 }
|
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378
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112
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379 if (!failed) {
|
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0
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380 break;
|
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112
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381 }
|
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0
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382
|
|
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383 /* TODO: delay configurable */
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384
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|
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385 ngx_log_error(NGX_LOG_NOTICE, log, 0,
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|
386 "try again to bind() after 500ms");
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112
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387
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|
0
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388 ngx_msleep(500);
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|
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389 }
|
|
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390
|
|
|
391 if (failed) {
|
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26
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392 ngx_log_error(NGX_LOG_EMERG, log, 0, "still could not bind()");
|
|
0
|
393 return NGX_ERROR;
|
|
|
394 }
|
|
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395
|
|
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396 return NGX_OK;
|
|
|
397 }
|
|
|
398
|
|
|
399
|
|
70
|
400 void
|
|
486
|
401 ngx_configure_listening_sockets(ngx_cycle_t *cycle)
|
|
112
|
402 {
|
|
|
403 ngx_uint_t i;
|
|
|
404 ngx_listening_t *ls;
|
|
|
405
|
|
|
406 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
|
|
|
407 struct accept_filter_arg af;
|
|
|
408 #endif
|
|
|
409 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
|
|
|
410 int timeout;
|
|
|
411 #endif
|
|
|
412
|
|
|
413 ls = cycle->listening.elts;
|
|
|
414 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
415
|
|
486
|
416 ls[i].log = *ls[i].logp;
|
|
|
417
|
|
112
|
418 if (ls[i].rcvbuf != -1) {
|
|
|
419 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF,
|
|
|
420 (const void *) &ls[i].rcvbuf, sizeof(int))
|
|
|
421 == -1)
|
|
|
422 {
|
|
|
423 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
118
|
424 "setsockopt(SO_RCVBUF, %d) %V failed, ignored",
|
|
|
425 ls[i].rcvbuf, &ls[i].addr_text);
|
|
112
|
426 }
|
|
|
427 }
|
|
|
428
|
|
|
429 if (ls[i].sndbuf != -1) {
|
|
|
430 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF,
|
|
|
431 (const void *) &ls[i].sndbuf, sizeof(int))
|
|
|
432 == -1)
|
|
|
433 {
|
|
|
434 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
118
|
435 "setsockopt(SO_SNDBUF, %d) %V failed, ignored",
|
|
|
436 ls[i].sndbuf, &ls[i].addr_text);
|
|
112
|
437 }
|
|
|
438 }
|
|
|
439
|
|
184
|
440 #if 0
|
|
|
441 if (1) {
|
|
|
442 int tcp_nodelay = 1;
|
|
|
443
|
|
|
444 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
445 (const void *) &tcp_nodelay, sizeof(int))
|
|
|
446 == -1)
|
|
|
447 {
|
|
|
448 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
449 "setsockopt(TCP_NODELAY) %V failed, ignored",
|
|
|
450 &ls[i].addr_text);
|
|
|
451 }
|
|
|
452 }
|
|
|
453 #endif
|
|
|
454
|
|
112
|
455 if (ls[i].listen) {
|
|
306
|
456
|
|
|
457 /* change backlog via listen() */
|
|
|
458
|
|
112
|
459 if (listen(ls[i].fd, ls[i].backlog) == -1) {
|
|
|
460 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
306
|
461 "listen() to %V, backlog %d failed, ignored",
|
|
112
|
462 &ls[i].addr_text, ls[i].backlog);
|
|
|
463 }
|
|
|
464 }
|
|
|
465
|
|
|
466 /*
|
|
|
467 * setting deferred mode should be last operation on socket,
|
|
|
468 * because code may prematurely continue cycle on failure
|
|
|
469 */
|
|
|
470
|
|
|
471 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
|
|
472
|
|
|
473 #ifdef SO_ACCEPTFILTER
|
|
|
474
|
|
176
|
475 if (ls[i].delete_deferred) {
|
|
|
476 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)
|
|
|
477 == -1)
|
|
112
|
478 {
|
|
|
479 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
480 "setsockopt(SO_ACCEPTFILTER, NULL) "
|
|
|
481 "for %V failed, ignored",
|
|
176
|
482 &ls[i].addr_text);
|
|
112
|
483
|
|
176
|
484 if (ls[i].accept_filter) {
|
|
112
|
485 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
|
486 "could not change the accept filter "
|
|
|
487 "to \"%s\" for %V, ignored",
|
|
176
|
488 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
489 }
|
|
|
490
|
|
|
491 continue;
|
|
|
492 }
|
|
|
493
|
|
176
|
494 ls[i].deferred_accept = 0;
|
|
112
|
495 }
|
|
|
496
|
|
176
|
497 if (ls[i].add_deferred) {
|
|
112
|
498 ngx_memzero(&af, sizeof(struct accept_filter_arg));
|
|
|
499 (void) ngx_cpystrn((u_char *) af.af_name,
|
|
176
|
500 (u_char *) ls[i].accept_filter, 16);
|
|
112
|
501
|
|
176
|
502 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER,
|
|
112
|
503 &af, sizeof(struct accept_filter_arg))
|
|
|
504 == -1)
|
|
|
505 {
|
|
|
506 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
507 "setsockopt(SO_ACCEPTFILTER, \"%s\") "
|
|
|
508 " for %V failed, ignored",
|
|
176
|
509 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
510 continue;
|
|
|
511 }
|
|
|
512
|
|
176
|
513 ls[i].deferred_accept = 1;
|
|
112
|
514 }
|
|
|
515
|
|
|
516 #endif
|
|
|
517
|
|
|
518 #ifdef TCP_DEFER_ACCEPT
|
|
|
519
|
|
176
|
520 if (ls[i].add_deferred || ls[i].delete_deferred) {
|
|
112
|
521
|
|
176
|
522 if (ls[i].add_deferred) {
|
|
|
523 timeout = (int) (ls[i].post_accept_timeout / 1000);
|
|
112
|
524
|
|
|
525 } else {
|
|
|
526 timeout = 0;
|
|
|
527 }
|
|
|
528
|
|
176
|
529 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT,
|
|
112
|
530 &timeout, sizeof(int))
|
|
|
531 == -1)
|
|
|
532 {
|
|
|
533 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
534 "setsockopt(TCP_DEFER_ACCEPT, %d) for %V failed, "
|
|
|
535 "ignored",
|
|
176
|
536 timeout, &ls[i].addr_text);
|
|
112
|
537
|
|
|
538 continue;
|
|
|
539 }
|
|
|
540 }
|
|
|
541
|
|
176
|
542 if (ls[i].add_deferred) {
|
|
|
543 ls[i].deferred_accept = 1;
|
|
112
|
544 }
|
|
|
545
|
|
|
546 #endif
|
|
|
547
|
|
|
548 #endif /* NGX_HAVE_DEFERRED_ACCEPT */
|
|
|
549 }
|
|
|
550
|
|
|
551 return;
|
|
|
552 }
|
|
|
553
|
|
|
554
|
|
|
555 void
|
|
70
|
556 ngx_close_listening_sockets(ngx_cycle_t *cycle)
|
|
0
|
557 {
|
|
92
|
558 ngx_uint_t i;
|
|
|
559 ngx_listening_t *ls;
|
|
|
560 ngx_connection_t *c;
|
|
0
|
561
|
|
|
562 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
|
563 return;
|
|
|
564 }
|
|
|
565
|
|
|
566 ngx_accept_mutex_held = 0;
|
|
160
|
567 ngx_use_accept_mutex = 0;
|
|
0
|
568
|
|
|
569 ls = cycle->listening.elts;
|
|
|
570 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
571
|
|
92
|
572 c = ls[i].connection;
|
|
0
|
573
|
|
480
|
574 if (c) {
|
|
|
575 if (c->read->active) {
|
|
|
576 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
577 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
362
|
578
|
|
480
|
579 } else if (ngx_event_flags & NGX_USE_EPOLL_EVENT) {
|
|
0
|
580
|
|
480
|
581 /*
|
|
|
582 * it seems that Linux-2.6.x OpenVZ sends events
|
|
|
583 * for closed shared listening sockets unless
|
|
|
584 * the events was explicity deleted
|
|
|
585 */
|
|
362
|
586
|
|
480
|
587 ngx_del_event(c->read, NGX_READ_EVENT, 0);
|
|
362
|
588
|
|
480
|
589 } else {
|
|
|
590 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
591 }
|
|
0
|
592 }
|
|
480
|
593
|
|
|
594 ngx_free_connection(c);
|
|
|
595
|
|
|
596 c->fd = (ngx_socket_t) -1;
|
|
0
|
597 }
|
|
|
598
|
|
112
|
599 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
|
|
|
600 "close listening %V #%d ", &ls[i].addr_text, ls[i].fd);
|
|
|
601
|
|
92
|
602 if (ngx_close_socket(ls[i].fd) == -1) {
|
|
0
|
603 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
10
|
604 ngx_close_socket_n " %V failed", &ls[i].addr_text);
|
|
0
|
605 }
|
|
498
|
606
|
|
|
607 ls[i].fd = (ngx_socket_t) -1;
|
|
92
|
608 }
|
|
|
609 }
|
|
0
|
610
|
|
92
|
611
|
|
|
612 ngx_connection_t *
|
|
|
613 ngx_get_connection(ngx_socket_t s, ngx_log_t *log)
|
|
|
614 {
|
|
110
|
615 ngx_uint_t instance;
|
|
|
616 ngx_event_t *rev, *wev;
|
|
|
617 ngx_connection_t *c;
|
|
92
|
618
|
|
|
619 /* disable warning: Win32 SOCKET is u_int while UNIX socket is int */
|
|
|
620
|
|
|
621 if (ngx_cycle->files && (ngx_uint_t) s >= ngx_cycle->files_n) {
|
|
|
622 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
|
623 "the new socket has number %d, "
|
|
|
624 "but only %ui files are available",
|
|
|
625 s, ngx_cycle->files_n);
|
|
|
626 return NULL;
|
|
|
627 }
|
|
|
628
|
|
|
629 /* ngx_mutex_lock */
|
|
|
630
|
|
|
631 c = ngx_cycle->free_connections;
|
|
|
632
|
|
|
633 if (c == NULL) {
|
|
|
634 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
412
|
635 "%ui worker_connections are not enough",
|
|
92
|
636 ngx_cycle->connection_n);
|
|
|
637
|
|
|
638 /* ngx_mutex_unlock */
|
|
|
639
|
|
|
640 return NULL;
|
|
|
641 }
|
|
|
642
|
|
|
643 ngx_cycle->free_connections = c->data;
|
|
|
644 ngx_cycle->free_connection_n--;
|
|
|
645
|
|
|
646 /* ngx_mutex_unlock */
|
|
|
647
|
|
|
648 if (ngx_cycle->files) {
|
|
|
649 ngx_cycle->files[s] = c;
|
|
|
650 }
|
|
|
651
|
|
110
|
652 rev = c->read;
|
|
|
653 wev = c->write;
|
|
|
654
|
|
|
655 ngx_memzero(c, sizeof(ngx_connection_t));
|
|
|
656
|
|
|
657 c->read = rev;
|
|
|
658 c->write = wev;
|
|
|
659 c->fd = s;
|
|
|
660 c->log = log;
|
|
|
661
|
|
|
662 instance = rev->instance;
|
|
|
663
|
|
|
664 ngx_memzero(rev, sizeof(ngx_event_t));
|
|
|
665 ngx_memzero(wev, sizeof(ngx_event_t));
|
|
|
666
|
|
|
667 rev->instance = !instance;
|
|
|
668 wev->instance = !instance;
|
|
|
669
|
|
|
670 rev->index = NGX_INVALID_INDEX;
|
|
|
671 wev->index = NGX_INVALID_INDEX;
|
|
|
672
|
|
|
673 rev->data = c;
|
|
|
674 wev->data = c;
|
|
|
675
|
|
|
676 wev->write = 1;
|
|
|
677
|
|
92
|
678 return c;
|
|
|
679 }
|
|
|
680
|
|
|
681
|
|
|
682 void
|
|
|
683 ngx_free_connection(ngx_connection_t *c)
|
|
|
684 {
|
|
|
685 /* ngx_mutex_lock */
|
|
|
686
|
|
|
687 c->data = ngx_cycle->free_connections;
|
|
|
688 ngx_cycle->free_connections = c;
|
|
|
689 ngx_cycle->free_connection_n++;
|
|
|
690
|
|
|
691 /* ngx_mutex_unlock */
|
|
|
692
|
|
|
693 if (ngx_cycle->files) {
|
|
|
694 ngx_cycle->files[c->fd] = NULL;
|
|
0
|
695 }
|
|
|
696 }
|
|
|
697
|
|
|
698
|
|
70
|
699 void
|
|
|
700 ngx_close_connection(ngx_connection_t *c)
|
|
0
|
701 {
|
|
366
|
702 ngx_err_t err;
|
|
|
703 ngx_uint_t log_error, level;
|
|
0
|
704 ngx_socket_t fd;
|
|
|
705
|
|
28
|
706 if (c->fd == -1) {
|
|
0
|
707 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
|
|
|
708 return;
|
|
|
709 }
|
|
|
710
|
|
|
711 if (c->read->timer_set) {
|
|
|
712 ngx_del_timer(c->read);
|
|
|
713 }
|
|
126
|
714
|
|
0
|
715 if (c->write->timer_set) {
|
|
|
716 ngx_del_timer(c->write);
|
|
|
717 }
|
|
126
|
718
|
|
0
|
719 if (ngx_del_conn) {
|
|
|
720 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
|
721
|
|
|
722 } else {
|
|
|
723 if (c->read->active || c->read->disabled) {
|
|
|
724 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
725 }
|
|
|
726
|
|
|
727 if (c->write->active || c->write->disabled) {
|
|
|
728 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
|
|
|
729 }
|
|
|
730 }
|
|
|
731
|
|
|
732 #if (NGX_THREADS)
|
|
|
733
|
|
|
734 /*
|
|
|
735 * we have to clean the connection information before the closing
|
|
|
736 * because another thread may reopen the same file descriptor
|
|
|
737 * before we clean the connection
|
|
|
738 */
|
|
|
739
|
|
112
|
740 ngx_mutex_lock(ngx_posted_events_mutex);
|
|
0
|
741
|
|
112
|
742 if (c->read->prev) {
|
|
|
743 ngx_delete_posted_event(c->read);
|
|
|
744 }
|
|
0
|
745
|
|
112
|
746 if (c->write->prev) {
|
|
|
747 ngx_delete_posted_event(c->write);
|
|
|
748 }
|
|
0
|
749
|
|
112
|
750 c->read->closed = 1;
|
|
|
751 c->write->closed = 1;
|
|
0
|
752
|
|
112
|
753 if (c->single_connection) {
|
|
|
754 ngx_unlock(&c->lock);
|
|
|
755 c->read->locked = 0;
|
|
|
756 c->write->locked = 0;
|
|
|
757 }
|
|
0
|
758
|
|
112
|
759 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
0
|
760
|
|
|
761 #else
|
|
|
762
|
|
|
763 if (c->read->prev) {
|
|
|
764 ngx_delete_posted_event(c->read);
|
|
|
765 }
|
|
|
766
|
|
|
767 if (c->write->prev) {
|
|
|
768 ngx_delete_posted_event(c->write);
|
|
|
769 }
|
|
|
770
|
|
|
771 c->read->closed = 1;
|
|
|
772 c->write->closed = 1;
|
|
|
773
|
|
|
774 #endif
|
|
|
775
|
|
366
|
776 log_error = c->log_error;
|
|
|
777
|
|
92
|
778 ngx_free_connection(c);
|
|
|
779
|
|
0
|
780 fd = c->fd;
|
|
|
781 c->fd = (ngx_socket_t) -1;
|
|
|
782
|
|
|
783 if (ngx_close_socket(fd) == -1) {
|
|
|
784
|
|
366
|
785 err = ngx_socket_errno;
|
|
|
786
|
|
|
787 if (err == NGX_ECONNRESET || err == NGX_ENOTCONN) {
|
|
|
788
|
|
|
789 switch (log_error) {
|
|
|
790
|
|
|
791 case NGX_ERROR_INFO:
|
|
|
792 level = NGX_LOG_INFO;
|
|
|
793 break;
|
|
|
794
|
|
|
795 case NGX_ERROR_ERR:
|
|
|
796 level = NGX_LOG_ERR;
|
|
|
797 break;
|
|
|
798
|
|
|
799 default:
|
|
|
800 level = NGX_LOG_CRIT;
|
|
|
801 }
|
|
|
802
|
|
|
803 } else {
|
|
|
804 level = NGX_LOG_CRIT;
|
|
|
805 }
|
|
|
806
|
|
0
|
807 /* we use ngx_cycle->log because c->log was in c->pool */
|
|
|
808
|
|
366
|
809 ngx_log_error(level, ngx_cycle->log, err,
|
|
332
|
810 ngx_close_socket_n " %d failed", fd);
|
|
0
|
811 }
|
|
|
812 }
|
|
|
813
|
|
|
814
|
|
70
|
815 ngx_int_t
|
|
492
|
816 ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s,
|
|
|
817 ngx_uint_t port)
|
|
|
818 {
|
|
|
819 socklen_t len;
|
|
|
820 ngx_uint_t addr;
|
|
|
821 u_char sa[NGX_SOCKADDRLEN];
|
|
|
822 struct sockaddr_in *sin;
|
|
|
823 #if (NGX_HAVE_INET6)
|
|
|
824 ngx_uint_t i;
|
|
|
825 struct sockaddr_in6 *sin6;
|
|
|
826 #endif
|
|
|
827
|
|
|
828 switch (c->local_sockaddr->sa_family) {
|
|
|
829
|
|
|
830 #if (NGX_HAVE_INET6)
|
|
|
831 case AF_INET6:
|
|
|
832 sin6 = (struct sockaddr_in6 *) c->local_sockaddr;
|
|
|
833
|
|
|
834 for (addr = 0, i = 0; addr == 0 && i < 16; i++) {
|
|
|
835 addr |= sin6->sin6_addr.s6_addr[i];
|
|
|
836 }
|
|
|
837
|
|
|
838 break;
|
|
|
839 #endif
|
|
|
840
|
|
|
841 default: /* AF_INET */
|
|
|
842 sin = (struct sockaddr_in *) c->local_sockaddr;
|
|
|
843 addr = sin->sin_addr.s_addr;
|
|
|
844 break;
|
|
|
845 }
|
|
|
846
|
|
|
847 if (addr == 0) {
|
|
|
848
|
|
|
849 len = NGX_SOCKADDRLEN;
|
|
|
850
|
|
|
851 if (getsockname(c->fd, (struct sockaddr *) &sa, &len) == -1) {
|
|
|
852 ngx_connection_error(c, ngx_socket_errno, "getsockname() failed");
|
|
|
853 return NGX_ERROR;
|
|
|
854 }
|
|
|
855
|
|
|
856 c->local_sockaddr = ngx_palloc(c->pool, len);
|
|
|
857 if (c->local_sockaddr == NULL) {
|
|
|
858 return NGX_ERROR;
|
|
|
859 }
|
|
|
860
|
|
|
861 c->local_socklen = len;
|
|
|
862 ngx_memcpy(c->local_sockaddr, &sa, len);
|
|
|
863 }
|
|
|
864
|
|
|
865 if (s == NULL) {
|
|
|
866 return NGX_OK;
|
|
|
867 }
|
|
|
868
|
|
|
869 s->len = ngx_sock_ntop(c->local_sockaddr, s->data, s->len, port);
|
|
|
870
|
|
|
871 return NGX_OK;
|
|
|
872 }
|
|
|
873
|
|
|
874
|
|
|
875 ngx_int_t
|
|
70
|
876 ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
|
|
0
|
877 {
|
|
|
878 ngx_uint_t level;
|
|
|
879
|
|
484
|
880 /* Winsock may return NGX_ECONNABORTED instead of NGX_ECONNRESET */
|
|
|
881
|
|
|
882 if ((err == NGX_ECONNRESET
|
|
|
883 #if (NGX_WIN32)
|
|
|
884 || err == NGX_ECONNABORTED
|
|
|
885 #endif
|
|
|
886 ) && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
|
|
|
887 {
|
|
0
|
888 return 0;
|
|
|
889 }
|
|
|
890
|
|
460
|
891 #if (NGX_SOLARIS)
|
|
|
892 if (err == NGX_EINVAL && c->log_error == NGX_ERROR_IGNORE_EINVAL) {
|
|
|
893 return 0;
|
|
|
894 }
|
|
|
895 #endif
|
|
|
896
|
|
86
|
897 if (err == 0
|
|
|
898 || err == NGX_ECONNRESET
|
|
484
|
899 #if (NGX_WIN32)
|
|
|
900 || err == NGX_ECONNABORTED
|
|
|
901 #else
|
|
0
|
902 || err == NGX_EPIPE
|
|
|
903 #endif
|
|
|
904 || err == NGX_ENOTCONN
|
|
136
|
905 || err == NGX_ETIMEDOUT
|
|
0
|
906 || err == NGX_ECONNREFUSED
|
|
364
|
907 || err == NGX_ENETDOWN
|
|
|
908 || err == NGX_ENETUNREACH
|
|
|
909 || err == NGX_EHOSTDOWN
|
|
0
|
910 || err == NGX_EHOSTUNREACH)
|
|
|
911 {
|
|
|
912 switch (c->log_error) {
|
|
|
913
|
|
460
|
914 case NGX_ERROR_IGNORE_EINVAL:
|
|
0
|
915 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
916 case NGX_ERROR_INFO:
|
|
|
917 level = NGX_LOG_INFO;
|
|
|
918 break;
|
|
|
919
|
|
|
920 case NGX_ERROR_ERR:
|
|
|
921 level = NGX_LOG_ERR;
|
|
|
922 break;
|
|
|
923
|
|
|
924 default:
|
|
366
|
925 level = NGX_LOG_ALERT;
|
|
0
|
926 }
|
|
|
927
|
|
|
928 } else {
|
|
366
|
929 level = NGX_LOG_ALERT;
|
|
0
|
930 }
|
|
|
931
|
|
|
932 ngx_log_error(level, c->log, err, text);
|
|
|
933
|
|
|
934 return NGX_ERROR;
|
|
|
935 }
|
