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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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618
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15 static void ngx_drain_connections(void);
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16
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17
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70
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18 ngx_listening_t *
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486
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19 ngx_create_listening(ngx_conf_t *cf, void *sockaddr, socklen_t socklen)
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0
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20 {
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538
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21 size_t len;
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486
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22 ngx_listening_t *ls;
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23 struct sockaddr *sa;
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24 u_char text[NGX_SOCKADDR_STRLEN];
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0
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25
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50
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26 ls = ngx_array_push(&cf->cycle->listening);
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27 if (ls == NULL) {
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0
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28 return NULL;
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29 }
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30
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31 ngx_memzero(ls, sizeof(ngx_listening_t));
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32
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486
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33 sa = ngx_palloc(cf->pool, socklen);
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34 if (sa == NULL) {
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0
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35 return NULL;
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36 }
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37
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486
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38 ngx_memcpy(sa, sockaddr, socklen);
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0
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39
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486
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40 ls->sockaddr = sa;
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41 ls->socklen = socklen;
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10
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42
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538
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43 len = ngx_sock_ntop(sa, text, NGX_SOCKADDR_STRLEN, 1);
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44 ls->addr_text.len = len;
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486
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45
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46 switch (ls->sockaddr->sa_family) {
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47 #if (NGX_HAVE_INET6)
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48 case AF_INET6:
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49 ls->addr_text_max_len = NGX_INET6_ADDRSTRLEN;
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50 break;
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51 #endif
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538
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52 #if (NGX_HAVE_UNIX_DOMAIN)
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53 case AF_UNIX:
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54 ls->addr_text_max_len = NGX_UNIX_ADDRSTRLEN;
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55 len++;
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56 break;
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57 #endif
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486
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58 case AF_INET:
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59 ls->addr_text_max_len = NGX_INET_ADDRSTRLEN;
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60 break;
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61 default:
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62 ls->addr_text_max_len = NGX_SOCKADDR_STRLEN;
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63 break;
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64 }
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65
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538
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66 ls->addr_text.data = ngx_pnalloc(cf->pool, len);
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67 if (ls->addr_text.data == NULL) {
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68 return NULL;
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69 }
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70
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71 ngx_memcpy(ls->addr_text.data, text, len);
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72
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73 ls->fd = (ngx_socket_t) -1;
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74 ls->type = SOCK_STREAM;
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75
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486
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76 ls->backlog = NGX_LISTEN_BACKLOG;
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77 ls->rcvbuf = -1;
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78 ls->sndbuf = -1;
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0
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79
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584
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80 #if (NGX_HAVE_SETFIB)
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81 ls->setfib = -1;
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82 #endif
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83
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0
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84 return ls;
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85 }
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86
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87
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70
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88 ngx_int_t
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89 ngx_set_inherited_sockets(ngx_cycle_t *cycle)
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0
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90 {
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72
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91 size_t len;
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92 ngx_uint_t i;
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93 ngx_listening_t *ls;
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112
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94 socklen_t olen;
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72
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95 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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90
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96 ngx_err_t err;
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72
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97 struct accept_filter_arg af;
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98 #endif
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99 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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100 int timeout;
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101 #endif
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0
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102
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103 ls = cycle->listening.elts;
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104 for (i = 0; i < cycle->listening.nelts; i++) {
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105
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574
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106 ls[i].sockaddr = ngx_palloc(cycle->pool, NGX_SOCKADDRLEN);
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0
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107 if (ls[i].sockaddr == NULL) {
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108 return NGX_ERROR;
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109 }
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110
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574
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111 ls[i].socklen = NGX_SOCKADDRLEN;
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0
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112 if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
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113 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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114 "getsockname() of the inherited "
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115 "socket #%d failed", ls[i].fd);
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116 ls[i].ignore = 1;
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117 continue;
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118 }
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119
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448
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120 switch (ls[i].sockaddr->sa_family) {
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0
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121
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448
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122 #if (NGX_HAVE_INET6)
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123 case AF_INET6:
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124 ls[i].addr_text_max_len = NGX_INET6_ADDRSTRLEN;
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542
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125 len = NGX_INET6_ADDRSTRLEN + sizeof(":65535") - 1;
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126 break;
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127 #endif
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128
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129 #if (NGX_HAVE_UNIX_DOMAIN)
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130 case AF_UNIX:
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131 ls[i].addr_text_max_len = NGX_UNIX_ADDRSTRLEN;
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132 len = NGX_UNIX_ADDRSTRLEN;
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448
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133 break;
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134 #endif
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135
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136 case AF_INET:
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137 ls[i].addr_text_max_len = NGX_INET_ADDRSTRLEN;
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542
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138 len = NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1;
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448
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139 break;
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140
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141 default:
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0
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142 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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143 "the inherited socket #%d has "
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448
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144 "an unsupported protocol family", ls[i].fd);
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0
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145 ls[i].ignore = 1;
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146 continue;
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147 }
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10
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148
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448
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149 ls[i].addr_text.data = ngx_pnalloc(cycle->pool, len);
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0
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150 if (ls[i].addr_text.data == NULL) {
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151 return NGX_ERROR;
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152 }
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153
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448
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154 len = ngx_sock_ntop(ls[i].sockaddr, ls[i].addr_text.data, len, 1);
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10
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155 if (len == 0) {
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0
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156 return NGX_ERROR;
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157 }
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10
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158
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448
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159 ls[i].addr_text.len = len;
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72
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160
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326
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161 ls[i].backlog = NGX_LISTEN_BACKLOG;
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86
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162
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112
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163 olen = sizeof(int);
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164
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165 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF, (void *) &ls[i].rcvbuf,
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166 &olen)
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167 == -1)
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168 {
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169 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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170 "getsockopt(SO_RCVBUF) %V failed, ignored",
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171 &ls[i].addr_text);
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172
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173 ls[i].rcvbuf = -1;
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174 }
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175
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176 olen = sizeof(int);
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177
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178 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF, (void *) &ls[i].sndbuf,
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179 &olen)
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180 == -1)
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181 {
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182 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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183 "getsockopt(SO_SNDBUF) %V failed, ignored",
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184 &ls[i].addr_text);
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185
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186 ls[i].sndbuf = -1;
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187 }
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188
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584
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189 #if 0
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190 /* SO_SETFIB is currently a set only option */
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191
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192 #if (NGX_HAVE_SETFIB)
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193
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194 if (getsockopt(ls[i].setfib, SOL_SOCKET, SO_SETFIB,
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195 (void *) &ls[i].setfib, &olen)
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196 == -1)
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197 {
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198 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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199 "getsockopt(SO_SETFIB) %V failed, ignored",
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200 &ls[i].addr_text);
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201
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202 ls[i].setfib = -1;
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203 }
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204
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205 #endif
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206 #endif
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207
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72
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208 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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209
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210 ngx_memzero(&af, sizeof(struct accept_filter_arg));
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112
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211 olen = sizeof(struct accept_filter_arg);
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72
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212
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112
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213 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, &af, &olen)
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72
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214 == -1)
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215 {
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90
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216 err = ngx_errno;
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217
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218 if (err == NGX_EINVAL) {
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219 continue;
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220 }
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221
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222 ngx_log_error(NGX_LOG_NOTICE, cycle->log, err,
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72
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223 "getsockopt(SO_ACCEPTFILTER) for %V failed, ignored",
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224 &ls[i].addr_text);
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225 continue;
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226 }
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227
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112
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228 if (olen < sizeof(struct accept_filter_arg) || af.af_name[0] == '\0') {
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72
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229 continue;
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230 }
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231
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232 ls[i].accept_filter = ngx_palloc(cycle->pool, 16);
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233 if (ls[i].accept_filter == NULL) {
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234 return NGX_ERROR;
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235 }
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236
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237 (void) ngx_cpystrn((u_char *) ls[i].accept_filter,
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238 (u_char *) af.af_name, 16);
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239 #endif
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240
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241 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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242
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243 timeout = 0;
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112
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244 olen = sizeof(int);
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72
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245
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112
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246 if (getsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, &olen)
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72
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247 == -1)
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248 {
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249 ngx_log_error(NGX_LOG_NOTICE, cycle->log, ngx_errno,
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250 "getsockopt(TCP_DEFER_ACCEPT) for %V failed, ignored",
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251 &ls[i].addr_text);
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252 continue;
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253 }
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254
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114
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255 if (olen < sizeof(int) || timeout == 0) {
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72
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256 continue;
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257 }
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258
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259 ls[i].deferred_accept = 1;
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260 #endif
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0
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261 }
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262
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263 return NGX_OK;
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264 }
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265
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266
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70
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267 ngx_int_t
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268 ngx_open_listening_sockets(ngx_cycle_t *cycle)
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0
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269 {
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112
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270 int reuseaddr;
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271 ngx_uint_t i, tries, failed;
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0
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272 ngx_err_t err;
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273 ngx_log_t *log;
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274 ngx_socket_t s;
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275 ngx_listening_t *ls;
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276
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277 reuseaddr = 1;
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278 #if (NGX_SUPPRESS_WARN)
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279 failed = 0;
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280 #endif
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281
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282 log = cycle->log;
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283
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112
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284 /* TODO: configurable try number */
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0
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285
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378
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286 for (tries = 5; tries; tries--) {
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0
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287 failed = 0;
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288
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289 /* for each listening socket */
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290
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291 ls = cycle->listening.elts;
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292 for (i = 0; i < cycle->listening.nelts; i++) {
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293
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294 if (ls[i].ignore) {
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295 continue;
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296 }
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297
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298 if (ls[i].fd != -1) {
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299 continue;
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300 }
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301
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302 if (ls[i].inherited) {
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303
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304 /* TODO: close on exit */
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305 /* TODO: nonblocking */
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306 /* TODO: deferred accept */
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307
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308 continue;
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309 }
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310
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400
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311 s = ngx_socket(ls[i].sockaddr->sa_family, ls[i].type, 0);
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0
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312
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313 if (s == -1) {
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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_socket_n " %V failed", &ls[i].addr_text);
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0
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316 return NGX_ERROR;
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317 }
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318
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319 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
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112
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320 (const void *) &reuseaddr, sizeof(int))
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321 == -1)
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322 {
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0
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323 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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324 "setsockopt(SO_REUSEADDR) %V failed",
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325 &ls[i].addr_text);
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112
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326
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306
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327 if (ngx_close_socket(s) == -1) {
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112
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328 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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329 ngx_close_socket_n " %V failed",
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330 &ls[i].addr_text);
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306
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331 }
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112
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332
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0
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333 return NGX_ERROR;
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334 }
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335
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460
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336 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
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337
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338 if (ls[i].sockaddr->sa_family == AF_INET6 && ls[i].ipv6only) {
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339 int ipv6only;
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340
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341 ipv6only = (ls[i].ipv6only == 1);
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342
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343 if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
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344 (const void *) &ipv6only, sizeof(int))
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345 == -1)
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346 {
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486
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347 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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460
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348 "setsockopt(IPV6_V6ONLY) %V failed, ignored",
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349 &ls[i].addr_text);
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350 }
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351 }
|
|
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352 #endif
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0
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353 /* TODO: close on exit */
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354
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|
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355 if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
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356 if (ngx_nonblocking(s) == -1) {
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357 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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358 ngx_nonblocking_n " %V failed",
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359 &ls[i].addr_text);
|
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112
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360
|
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306
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361 if (ngx_close_socket(s) == -1) {
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112
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362 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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363 ngx_close_socket_n " %V failed",
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364 &ls[i].addr_text);
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306
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365 }
|
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112
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366
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0
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367 return NGX_ERROR;
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368 }
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369 }
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370
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486
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371 ngx_log_debug2(NGX_LOG_DEBUG_CORE, log, 0,
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142
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372 "bind() %V #%d ", &ls[i].addr_text, s);
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373
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0
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374 if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
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375 err = ngx_socket_errno;
|
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112
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376
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|
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377 if (err == NGX_EADDRINUSE && ngx_test_config) {
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378 continue;
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379 }
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380
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0
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381 ngx_log_error(NGX_LOG_EMERG, log, err,
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|
10
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382 "bind() to %V failed", &ls[i].addr_text);
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0
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383
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306
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384 if (ngx_close_socket(s) == -1) {
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0
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385 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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386 ngx_close_socket_n " %V failed",
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|
387 &ls[i].addr_text);
|
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306
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388 }
|
|
0
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389
|
|
112
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390 if (err != NGX_EADDRINUSE) {
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|
|
391 return NGX_ERROR;
|
|
|
392 }
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393
|
|
0
|
394 failed = 1;
|
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112
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395
|
|
0
|
396 continue;
|
|
|
397 }
|
|
|
398
|
|
540
|
399 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
|
400
|
|
554
|
401 if (ls[i].sockaddr->sa_family == AF_UNIX) {
|
|
|
402 mode_t mode;
|
|
|
403 u_char *name;
|
|
|
404
|
|
|
405 name = ls[i].addr_text.data + sizeof("unix:") - 1;
|
|
|
406 mode = (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
|
|
540
|
407
|
|
554
|
408 if (chmod((char *) name, mode) == -1) {
|
|
|
409 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
|
|
|
410 "chmod() \"%s\" failed", name);
|
|
|
411 }
|
|
|
412
|
|
|
413 if (ngx_test_config) {
|
|
|
414 if (ngx_delete_file(name) == -1) {
|
|
|
415 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
|
|
|
416 ngx_delete_file_n " %s failed", name);
|
|
|
417 }
|
|
540
|
418 }
|
|
|
419 }
|
|
|
420 #endif
|
|
|
421
|
|
306
|
422 if (listen(s, ls[i].backlog) == -1) {
|
|
|
423 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
|
424 "listen() to %V, backlog %d failed",
|
|
|
425 &ls[i].addr_text, ls[i].backlog);
|
|
|
426
|
|
|
427 if (ngx_close_socket(s) == -1) {
|
|
|
428 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
|
429 ngx_close_socket_n " %V failed",
|
|
|
430 &ls[i].addr_text);
|
|
|
431 }
|
|
|
432
|
|
|
433 return NGX_ERROR;
|
|
|
434 }
|
|
|
435
|
|
112
|
436 ls[i].listen = 1;
|
|
0
|
437
|
|
|
438 ls[i].fd = s;
|
|
|
439 }
|
|
|
440
|
|
112
|
441 if (!failed) {
|
|
0
|
442 break;
|
|
112
|
443 }
|
|
0
|
444
|
|
|
445 /* TODO: delay configurable */
|
|
|
446
|
|
|
447 ngx_log_error(NGX_LOG_NOTICE, log, 0,
|
|
|
448 "try again to bind() after 500ms");
|
|
112
|
449
|
|
0
|
450 ngx_msleep(500);
|
|
|
451 }
|
|
|
452
|
|
|
453 if (failed) {
|
|
26
|
454 ngx_log_error(NGX_LOG_EMERG, log, 0, "still could not bind()");
|
|
0
|
455 return NGX_ERROR;
|
|
|
456 }
|
|
|
457
|
|
|
458 return NGX_OK;
|
|
|
459 }
|
|
|
460
|
|
|
461
|
|
70
|
462 void
|
|
486
|
463 ngx_configure_listening_sockets(ngx_cycle_t *cycle)
|
|
112
|
464 {
|
|
654
|
465 int keepalive;
|
|
112
|
466 ngx_uint_t i;
|
|
|
467 ngx_listening_t *ls;
|
|
|
468
|
|
|
469 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
|
|
|
470 struct accept_filter_arg af;
|
|
|
471 #endif
|
|
|
472 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
|
|
|
473 int timeout;
|
|
|
474 #endif
|
|
|
475
|
|
|
476 ls = cycle->listening.elts;
|
|
|
477 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
478
|
|
486
|
479 ls[i].log = *ls[i].logp;
|
|
|
480
|
|
112
|
481 if (ls[i].rcvbuf != -1) {
|
|
|
482 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF,
|
|
|
483 (const void *) &ls[i].rcvbuf, sizeof(int))
|
|
|
484 == -1)
|
|
|
485 {
|
|
|
486 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
118
|
487 "setsockopt(SO_RCVBUF, %d) %V failed, ignored",
|
|
|
488 ls[i].rcvbuf, &ls[i].addr_text);
|
|
112
|
489 }
|
|
|
490 }
|
|
|
491
|
|
|
492 if (ls[i].sndbuf != -1) {
|
|
|
493 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF,
|
|
|
494 (const void *) &ls[i].sndbuf, sizeof(int))
|
|
|
495 == -1)
|
|
|
496 {
|
|
|
497 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
118
|
498 "setsockopt(SO_SNDBUF, %d) %V failed, ignored",
|
|
|
499 ls[i].sndbuf, &ls[i].addr_text);
|
|
112
|
500 }
|
|
|
501 }
|
|
|
502
|
|
654
|
503 if (ls[i].keepalive) {
|
|
|
504 keepalive = (ls[i].keepalive == 1) ? 1 : 0;
|
|
|
505
|
|
|
506 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_KEEPALIVE,
|
|
|
507 (const void *) &keepalive, sizeof(int))
|
|
|
508 == -1)
|
|
|
509 {
|
|
|
510 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
511 "setsockopt(SO_KEEPALIVE, %d) %V failed, ignored",
|
|
|
512 keepalive, &ls[i].addr_text);
|
|
|
513 }
|
|
|
514 }
|
|
|
515
|
|
|
516 #if (NGX_HAVE_KEEPALIVE_TUNABLE)
|
|
|
517
|
|
|
518 if (ls[i].keepidle) {
|
|
|
519 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPIDLE,
|
|
|
520 (const void *) &ls[i].keepidle, sizeof(int))
|
|
|
521 == -1)
|
|
|
522 {
|
|
|
523 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
524 "setsockopt(TCP_KEEPIDLE, %d) %V failed, ignored",
|
|
|
525 ls[i].keepidle, &ls[i].addr_text);
|
|
|
526 }
|
|
|
527 }
|
|
|
528
|
|
|
529 if (ls[i].keepintvl) {
|
|
|
530 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPINTVL,
|
|
|
531 (const void *) &ls[i].keepintvl, sizeof(int))
|
|
|
532 == -1)
|
|
|
533 {
|
|
|
534 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
535 "setsockopt(TCP_KEEPINTVL, %d) %V failed, ignored",
|
|
|
536 ls[i].keepintvl, &ls[i].addr_text);
|
|
|
537 }
|
|
|
538 }
|
|
|
539
|
|
|
540 if (ls[i].keepcnt) {
|
|
|
541 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPCNT,
|
|
|
542 (const void *) &ls[i].keepcnt, sizeof(int))
|
|
|
543 == -1)
|
|
|
544 {
|
|
|
545 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
546 "setsockopt(TCP_KEEPCNT, %d) %V failed, ignored",
|
|
|
547 ls[i].keepcnt, &ls[i].addr_text);
|
|
|
548 }
|
|
|
549 }
|
|
|
550
|
|
|
551 #endif
|
|
|
552
|
|
584
|
553 #if (NGX_HAVE_SETFIB)
|
|
|
554 if (ls[i].setfib != -1) {
|
|
|
555 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SETFIB,
|
|
|
556 (const void *) &ls[i].setfib, sizeof(int))
|
|
|
557 == -1)
|
|
|
558 {
|
|
|
559 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
560 "setsockopt(SO_SETFIB, %d) %V failed, ignored",
|
|
|
561 ls[i].setfib, &ls[i].addr_text);
|
|
|
562 }
|
|
|
563 }
|
|
|
564 #endif
|
|
|
565
|
|
184
|
566 #if 0
|
|
|
567 if (1) {
|
|
|
568 int tcp_nodelay = 1;
|
|
|
569
|
|
|
570 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
571 (const void *) &tcp_nodelay, sizeof(int))
|
|
|
572 == -1)
|
|
|
573 {
|
|
|
574 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
575 "setsockopt(TCP_NODELAY) %V failed, ignored",
|
|
|
576 &ls[i].addr_text);
|
|
|
577 }
|
|
|
578 }
|
|
|
579 #endif
|
|
|
580
|
|
112
|
581 if (ls[i].listen) {
|
|
306
|
582
|
|
|
583 /* change backlog via listen() */
|
|
|
584
|
|
112
|
585 if (listen(ls[i].fd, ls[i].backlog) == -1) {
|
|
|
586 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
306
|
587 "listen() to %V, backlog %d failed, ignored",
|
|
112
|
588 &ls[i].addr_text, ls[i].backlog);
|
|
|
589 }
|
|
|
590 }
|
|
|
591
|
|
|
592 /*
|
|
|
593 * setting deferred mode should be last operation on socket,
|
|
|
594 * because code may prematurely continue cycle on failure
|
|
|
595 */
|
|
|
596
|
|
|
597 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
|
|
598
|
|
|
599 #ifdef SO_ACCEPTFILTER
|
|
|
600
|
|
176
|
601 if (ls[i].delete_deferred) {
|
|
|
602 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)
|
|
|
603 == -1)
|
|
112
|
604 {
|
|
|
605 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
606 "setsockopt(SO_ACCEPTFILTER, NULL) "
|
|
|
607 "for %V failed, ignored",
|
|
176
|
608 &ls[i].addr_text);
|
|
112
|
609
|
|
176
|
610 if (ls[i].accept_filter) {
|
|
112
|
611 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
|
612 "could not change the accept filter "
|
|
|
613 "to \"%s\" for %V, ignored",
|
|
176
|
614 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
615 }
|
|
|
616
|
|
|
617 continue;
|
|
|
618 }
|
|
|
619
|
|
176
|
620 ls[i].deferred_accept = 0;
|
|
112
|
621 }
|
|
|
622
|
|
176
|
623 if (ls[i].add_deferred) {
|
|
112
|
624 ngx_memzero(&af, sizeof(struct accept_filter_arg));
|
|
|
625 (void) ngx_cpystrn((u_char *) af.af_name,
|
|
176
|
626 (u_char *) ls[i].accept_filter, 16);
|
|
112
|
627
|
|
176
|
628 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER,
|
|
112
|
629 &af, sizeof(struct accept_filter_arg))
|
|
|
630 == -1)
|
|
|
631 {
|
|
|
632 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
633 "setsockopt(SO_ACCEPTFILTER, \"%s\") "
|
|
634
|
634 "for %V failed, ignored",
|
|
176
|
635 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
636 continue;
|
|
|
637 }
|
|
|
638
|
|
176
|
639 ls[i].deferred_accept = 1;
|
|
112
|
640 }
|
|
|
641
|
|
|
642 #endif
|
|
|
643
|
|
|
644 #ifdef TCP_DEFER_ACCEPT
|
|
|
645
|
|
176
|
646 if (ls[i].add_deferred || ls[i].delete_deferred) {
|
|
112
|
647
|
|
176
|
648 if (ls[i].add_deferred) {
|
|
|
649 timeout = (int) (ls[i].post_accept_timeout / 1000);
|
|
112
|
650
|
|
|
651 } else {
|
|
|
652 timeout = 0;
|
|
|
653 }
|
|
|
654
|
|
176
|
655 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT,
|
|
112
|
656 &timeout, sizeof(int))
|
|
|
657 == -1)
|
|
|
658 {
|
|
|
659 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
660 "setsockopt(TCP_DEFER_ACCEPT, %d) for %V failed, "
|
|
|
661 "ignored",
|
|
176
|
662 timeout, &ls[i].addr_text);
|
|
112
|
663
|
|
|
664 continue;
|
|
|
665 }
|
|
|
666 }
|
|
|
667
|
|
176
|
668 if (ls[i].add_deferred) {
|
|
|
669 ls[i].deferred_accept = 1;
|
|
112
|
670 }
|
|
|
671
|
|
|
672 #endif
|
|
|
673
|
|
|
674 #endif /* NGX_HAVE_DEFERRED_ACCEPT */
|
|
|
675 }
|
|
|
676
|
|
|
677 return;
|
|
|
678 }
|
|
|
679
|
|
|
680
|
|
|
681 void
|
|
70
|
682 ngx_close_listening_sockets(ngx_cycle_t *cycle)
|
|
0
|
683 {
|
|
92
|
684 ngx_uint_t i;
|
|
|
685 ngx_listening_t *ls;
|
|
|
686 ngx_connection_t *c;
|
|
0
|
687
|
|
|
688 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
|
689 return;
|
|
|
690 }
|
|
|
691
|
|
|
692 ngx_accept_mutex_held = 0;
|
|
160
|
693 ngx_use_accept_mutex = 0;
|
|
0
|
694
|
|
|
695 ls = cycle->listening.elts;
|
|
|
696 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
697
|
|
92
|
698 c = ls[i].connection;
|
|
0
|
699
|
|
480
|
700 if (c) {
|
|
|
701 if (c->read->active) {
|
|
|
702 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
703 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
362
|
704
|
|
480
|
705 } else if (ngx_event_flags & NGX_USE_EPOLL_EVENT) {
|
|
0
|
706
|
|
480
|
707 /*
|
|
|
708 * it seems that Linux-2.6.x OpenVZ sends events
|
|
|
709 * for closed shared listening sockets unless
|
|
|
710 * the events was explicity deleted
|
|
|
711 */
|
|
362
|
712
|
|
480
|
713 ngx_del_event(c->read, NGX_READ_EVENT, 0);
|
|
362
|
714
|
|
480
|
715 } else {
|
|
|
716 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
717 }
|
|
0
|
718 }
|
|
480
|
719
|
|
|
720 ngx_free_connection(c);
|
|
|
721
|
|
|
722 c->fd = (ngx_socket_t) -1;
|
|
0
|
723 }
|
|
|
724
|
|
112
|
725 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
|
|
|
726 "close listening %V #%d ", &ls[i].addr_text, ls[i].fd);
|
|
|
727
|
|
92
|
728 if (ngx_close_socket(ls[i].fd) == -1) {
|
|
0
|
729 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
10
|
730 ngx_close_socket_n " %V failed", &ls[i].addr_text);
|
|
0
|
731 }
|
|
498
|
732
|
|
538
|
733 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
|
734
|
|
|
735 if (ls[i].sockaddr->sa_family == AF_UNIX
|
|
552
|
736 && ngx_process <= NGX_PROCESS_MASTER
|
|
540
|
737 && ngx_new_binary == 0)
|
|
538
|
738 {
|
|
|
739 u_char *name = ls[i].addr_text.data + sizeof("unix:") - 1;
|
|
|
740
|
|
|
741 if (ngx_delete_file(name) == -1) {
|
|
|
742 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
|
743 ngx_delete_file_n " %s failed", name);
|
|
|
744 }
|
|
|
745 }
|
|
|
746
|
|
|
747 #endif
|
|
|
748
|
|
498
|
749 ls[i].fd = (ngx_socket_t) -1;
|
|
92
|
750 }
|
|
|
751 }
|
|
0
|
752
|
|
92
|
753
|
|
|
754 ngx_connection_t *
|
|
|
755 ngx_get_connection(ngx_socket_t s, ngx_log_t *log)
|
|
|
756 {
|
|
110
|
757 ngx_uint_t instance;
|
|
|
758 ngx_event_t *rev, *wev;
|
|
|
759 ngx_connection_t *c;
|
|
92
|
760
|
|
|
761 /* disable warning: Win32 SOCKET is u_int while UNIX socket is int */
|
|
|
762
|
|
|
763 if (ngx_cycle->files && (ngx_uint_t) s >= ngx_cycle->files_n) {
|
|
|
764 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
|
765 "the new socket has number %d, "
|
|
|
766 "but only %ui files are available",
|
|
|
767 s, ngx_cycle->files_n);
|
|
|
768 return NULL;
|
|
|
769 }
|
|
|
770
|
|
|
771 /* ngx_mutex_lock */
|
|
|
772
|
|
|
773 c = ngx_cycle->free_connections;
|
|
|
774
|
|
|
775 if (c == NULL) {
|
|
618
|
776 ngx_drain_connections();
|
|
|
777 c = ngx_cycle->free_connections;
|
|
|
778 }
|
|
|
779
|
|
|
780 if (c == NULL) {
|
|
92
|
781 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
412
|
782 "%ui worker_connections are not enough",
|
|
92
|
783 ngx_cycle->connection_n);
|
|
|
784
|
|
|
785 /* ngx_mutex_unlock */
|
|
|
786
|
|
|
787 return NULL;
|
|
|
788 }
|
|
|
789
|
|
|
790 ngx_cycle->free_connections = c->data;
|
|
|
791 ngx_cycle->free_connection_n--;
|
|
|
792
|
|
|
793 /* ngx_mutex_unlock */
|
|
|
794
|
|
|
795 if (ngx_cycle->files) {
|
|
|
796 ngx_cycle->files[s] = c;
|
|
|
797 }
|
|
|
798
|
|
110
|
799 rev = c->read;
|
|
|
800 wev = c->write;
|
|
|
801
|
|
|
802 ngx_memzero(c, sizeof(ngx_connection_t));
|
|
|
803
|
|
|
804 c->read = rev;
|
|
|
805 c->write = wev;
|
|
|
806 c->fd = s;
|
|
|
807 c->log = log;
|
|
|
808
|
|
|
809 instance = rev->instance;
|
|
|
810
|
|
|
811 ngx_memzero(rev, sizeof(ngx_event_t));
|
|
|
812 ngx_memzero(wev, sizeof(ngx_event_t));
|
|
|
813
|
|
|
814 rev->instance = !instance;
|
|
|
815 wev->instance = !instance;
|
|
|
816
|
|
|
817 rev->index = NGX_INVALID_INDEX;
|
|
|
818 wev->index = NGX_INVALID_INDEX;
|
|
|
819
|
|
|
820 rev->data = c;
|
|
|
821 wev->data = c;
|
|
|
822
|
|
|
823 wev->write = 1;
|
|
|
824
|
|
92
|
825 return c;
|
|
|
826 }
|
|
|
827
|
|
|
828
|
|
|
829 void
|
|
|
830 ngx_free_connection(ngx_connection_t *c)
|
|
|
831 {
|
|
|
832 /* ngx_mutex_lock */
|
|
|
833
|
|
|
834 c->data = ngx_cycle->free_connections;
|
|
|
835 ngx_cycle->free_connections = c;
|
|
|
836 ngx_cycle->free_connection_n++;
|
|
|
837
|
|
|
838 /* ngx_mutex_unlock */
|
|
|
839
|
|
|
840 if (ngx_cycle->files) {
|
|
|
841 ngx_cycle->files[c->fd] = NULL;
|
|
0
|
842 }
|
|
|
843 }
|
|
|
844
|
|
|
845
|
|
70
|
846 void
|
|
|
847 ngx_close_connection(ngx_connection_t *c)
|
|
0
|
848 {
|
|
366
|
849 ngx_err_t err;
|
|
|
850 ngx_uint_t log_error, level;
|
|
0
|
851 ngx_socket_t fd;
|
|
|
852
|
|
28
|
853 if (c->fd == -1) {
|
|
0
|
854 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
|
|
|
855 return;
|
|
|
856 }
|
|
|
857
|
|
|
858 if (c->read->timer_set) {
|
|
|
859 ngx_del_timer(c->read);
|
|
|
860 }
|
|
126
|
861
|
|
0
|
862 if (c->write->timer_set) {
|
|
|
863 ngx_del_timer(c->write);
|
|
|
864 }
|
|
126
|
865
|
|
0
|
866 if (ngx_del_conn) {
|
|
|
867 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
|
868
|
|
|
869 } else {
|
|
|
870 if (c->read->active || c->read->disabled) {
|
|
|
871 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
872 }
|
|
|
873
|
|
|
874 if (c->write->active || c->write->disabled) {
|
|
|
875 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
|
|
|
876 }
|
|
|
877 }
|
|
|
878
|
|
|
879 #if (NGX_THREADS)
|
|
|
880
|
|
|
881 /*
|
|
|
882 * we have to clean the connection information before the closing
|
|
|
883 * because another thread may reopen the same file descriptor
|
|
|
884 * before we clean the connection
|
|
|
885 */
|
|
|
886
|
|
112
|
887 ngx_mutex_lock(ngx_posted_events_mutex);
|
|
0
|
888
|
|
112
|
889 if (c->read->prev) {
|
|
|
890 ngx_delete_posted_event(c->read);
|
|
|
891 }
|
|
0
|
892
|
|
112
|
893 if (c->write->prev) {
|
|
|
894 ngx_delete_posted_event(c->write);
|
|
|
895 }
|
|
0
|
896
|
|
112
|
897 c->read->closed = 1;
|
|
|
898 c->write->closed = 1;
|
|
0
|
899
|
|
112
|
900 if (c->single_connection) {
|
|
|
901 ngx_unlock(&c->lock);
|
|
|
902 c->read->locked = 0;
|
|
|
903 c->write->locked = 0;
|
|
|
904 }
|
|
0
|
905
|
|
112
|
906 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
0
|
907
|
|
|
908 #else
|
|
|
909
|
|
|
910 if (c->read->prev) {
|
|
|
911 ngx_delete_posted_event(c->read);
|
|
|
912 }
|
|
|
913
|
|
|
914 if (c->write->prev) {
|
|
|
915 ngx_delete_posted_event(c->write);
|
|
|
916 }
|
|
|
917
|
|
|
918 c->read->closed = 1;
|
|
|
919 c->write->closed = 1;
|
|
|
920
|
|
|
921 #endif
|
|
|
922
|
|
618
|
923 ngx_reusable_connection(c, 0);
|
|
|
924
|
|
366
|
925 log_error = c->log_error;
|
|
|
926
|
|
92
|
927 ngx_free_connection(c);
|
|
|
928
|
|
0
|
929 fd = c->fd;
|
|
|
930 c->fd = (ngx_socket_t) -1;
|
|
|
931
|
|
|
932 if (ngx_close_socket(fd) == -1) {
|
|
|
933
|
|
366
|
934 err = ngx_socket_errno;
|
|
|
935
|
|
|
936 if (err == NGX_ECONNRESET || err == NGX_ENOTCONN) {
|
|
|
937
|
|
|
938 switch (log_error) {
|
|
|
939
|
|
|
940 case NGX_ERROR_INFO:
|
|
|
941 level = NGX_LOG_INFO;
|
|
|
942 break;
|
|
|
943
|
|
|
944 case NGX_ERROR_ERR:
|
|
|
945 level = NGX_LOG_ERR;
|
|
|
946 break;
|
|
|
947
|
|
|
948 default:
|
|
|
949 level = NGX_LOG_CRIT;
|
|
|
950 }
|
|
|
951
|
|
|
952 } else {
|
|
|
953 level = NGX_LOG_CRIT;
|
|
|
954 }
|
|
|
955
|
|
0
|
956 /* we use ngx_cycle->log because c->log was in c->pool */
|
|
|
957
|
|
366
|
958 ngx_log_error(level, ngx_cycle->log, err,
|
|
332
|
959 ngx_close_socket_n " %d failed", fd);
|
|
0
|
960 }
|
|
|
961 }
|
|
|
962
|
|
|
963
|
|
618
|
964 void
|
|
|
965 ngx_reusable_connection(ngx_connection_t *c, ngx_uint_t reusable)
|
|
|
966 {
|
|
|
967 ngx_log_debug1(NGX_LOG_DEBUG_CORE, c->log, 0,
|
|
|
968 "reusable connection: %ui", reusable);
|
|
|
969
|
|
|
970 if (c->reusable) {
|
|
|
971 ngx_queue_remove(&c->queue);
|
|
|
972 }
|
|
|
973
|
|
|
974 c->reusable = reusable;
|
|
|
975
|
|
|
976 if (reusable) {
|
|
|
977 /* need cast as ngx_cycle is volatile */
|
|
|
978
|
|
|
979 ngx_queue_insert_head(
|
|
|
980 (ngx_queue_t *) &ngx_cycle->reusable_connections_queue, &c->queue);
|
|
|
981 }
|
|
|
982 }
|
|
|
983
|
|
|
984
|
|
|
985 static void
|
|
|
986 ngx_drain_connections(void)
|
|
|
987 {
|
|
|
988 ngx_int_t i;
|
|
|
989 ngx_queue_t *q;
|
|
|
990 ngx_connection_t *c;
|
|
|
991
|
|
|
992 for (i = 0; i < 32; i++) {
|
|
|
993 if (ngx_queue_empty(&ngx_cycle->reusable_connections_queue)) {
|
|
|
994 break;
|
|
|
995 }
|
|
|
996
|
|
|
997 q = ngx_queue_last(&ngx_cycle->reusable_connections_queue);
|
|
|
998 c = ngx_queue_data(q, ngx_connection_t, queue);
|
|
|
999
|
|
|
1000 ngx_log_debug0(NGX_LOG_DEBUG_CORE, c->log, 0,
|
|
|
1001 "reusing connection");
|
|
|
1002
|
|
|
1003 c->close = 1;
|
|
|
1004 c->read->handler(c->read);
|
|
|
1005 }
|
|
|
1006 }
|
|
|
1007
|
|
|
1008
|
|
70
|
1009 ngx_int_t
|
|
492
|
1010 ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s,
|
|
|
1011 ngx_uint_t port)
|
|
|
1012 {
|
|
|
1013 socklen_t len;
|
|
|
1014 ngx_uint_t addr;
|
|
|
1015 u_char sa[NGX_SOCKADDRLEN];
|
|
|
1016 struct sockaddr_in *sin;
|
|
|
1017 #if (NGX_HAVE_INET6)
|
|
|
1018 ngx_uint_t i;
|
|
|
1019 struct sockaddr_in6 *sin6;
|
|
|
1020 #endif
|
|
|
1021
|
|
|
1022 switch (c->local_sockaddr->sa_family) {
|
|
|
1023
|
|
|
1024 #if (NGX_HAVE_INET6)
|
|
|
1025 case AF_INET6:
|
|
|
1026 sin6 = (struct sockaddr_in6 *) c->local_sockaddr;
|
|
|
1027
|
|
|
1028 for (addr = 0, i = 0; addr == 0 && i < 16; i++) {
|
|
|
1029 addr |= sin6->sin6_addr.s6_addr[i];
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 break;
|
|
|
1033 #endif
|
|
|
1034
|
|
|
1035 default: /* AF_INET */
|
|
|
1036 sin = (struct sockaddr_in *) c->local_sockaddr;
|
|
|
1037 addr = sin->sin_addr.s_addr;
|
|
|
1038 break;
|
|
|
1039 }
|
|
|
1040
|
|
|
1041 if (addr == 0) {
|
|
|
1042
|
|
|
1043 len = NGX_SOCKADDRLEN;
|
|
|
1044
|
|
|
1045 if (getsockname(c->fd, (struct sockaddr *) &sa, &len) == -1) {
|
|
|
1046 ngx_connection_error(c, ngx_socket_errno, "getsockname() failed");
|
|
|
1047 return NGX_ERROR;
|
|
|
1048 }
|
|
|
1049
|
|
|
1050 c->local_sockaddr = ngx_palloc(c->pool, len);
|
|
|
1051 if (c->local_sockaddr == NULL) {
|
|
|
1052 return NGX_ERROR;
|
|
|
1053 }
|
|
|
1054
|
|
|
1055 ngx_memcpy(c->local_sockaddr, &sa, len);
|
|
|
1056 }
|
|
|
1057
|
|
|
1058 if (s == NULL) {
|
|
|
1059 return NGX_OK;
|
|
|
1060 }
|
|
|
1061
|
|
|
1062 s->len = ngx_sock_ntop(c->local_sockaddr, s->data, s->len, port);
|
|
|
1063
|
|
|
1064 return NGX_OK;
|
|
|
1065 }
|
|
|
1066
|
|
|
1067
|
|
|
1068 ngx_int_t
|
|
70
|
1069 ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
|
|
0
|
1070 {
|
|
|
1071 ngx_uint_t level;
|
|
|
1072
|
|
484
|
1073 /* Winsock may return NGX_ECONNABORTED instead of NGX_ECONNRESET */
|
|
|
1074
|
|
|
1075 if ((err == NGX_ECONNRESET
|
|
|
1076 #if (NGX_WIN32)
|
|
|
1077 || err == NGX_ECONNABORTED
|
|
|
1078 #endif
|
|
|
1079 ) && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
|
|
|
1080 {
|
|
0
|
1081 return 0;
|
|
|
1082 }
|
|
|
1083
|
|
460
|
1084 #if (NGX_SOLARIS)
|
|
|
1085 if (err == NGX_EINVAL && c->log_error == NGX_ERROR_IGNORE_EINVAL) {
|
|
|
1086 return 0;
|
|
|
1087 }
|
|
|
1088 #endif
|
|
|
1089
|
|
86
|
1090 if (err == 0
|
|
|
1091 || err == NGX_ECONNRESET
|
|
484
|
1092 #if (NGX_WIN32)
|
|
|
1093 || err == NGX_ECONNABORTED
|
|
|
1094 #else
|
|
0
|
1095 || err == NGX_EPIPE
|
|
|
1096 #endif
|
|
|
1097 || err == NGX_ENOTCONN
|
|
136
|
1098 || err == NGX_ETIMEDOUT
|
|
0
|
1099 || err == NGX_ECONNREFUSED
|
|
364
|
1100 || err == NGX_ENETDOWN
|
|
|
1101 || err == NGX_ENETUNREACH
|
|
|
1102 || err == NGX_EHOSTDOWN
|
|
0
|
1103 || err == NGX_EHOSTUNREACH)
|
|
|
1104 {
|
|
|
1105 switch (c->log_error) {
|
|
|
1106
|
|
460
|
1107 case NGX_ERROR_IGNORE_EINVAL:
|
|
0
|
1108 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
1109 case NGX_ERROR_INFO:
|
|
|
1110 level = NGX_LOG_INFO;
|
|
|
1111 break;
|
|
|
1112
|
|
530
|
1113 default:
|
|
0
|
1114 level = NGX_LOG_ERR;
|
|
|
1115 }
|
|
|
1116
|
|
|
1117 } else {
|
|
366
|
1118 level = NGX_LOG_ALERT;
|
|
0
|
1119 }
|
|
|
1120
|
|
|
1121 ngx_log_error(level, c->log, err, text);
|
|
|
1122
|
|
|
1123 return NGX_ERROR;
|
|
|
1124 }
|
