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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 {
|
|
|
465 ngx_uint_t i;
|
|
|
466 ngx_listening_t *ls;
|
|
|
467
|
|
|
468 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
|
|
|
469 struct accept_filter_arg af;
|
|
|
470 #endif
|
|
|
471 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
|
|
|
472 int timeout;
|
|
|
473 #endif
|
|
|
474
|
|
|
475 ls = cycle->listening.elts;
|
|
|
476 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
477
|
|
486
|
478 ls[i].log = *ls[i].logp;
|
|
|
479
|
|
112
|
480 if (ls[i].rcvbuf != -1) {
|
|
|
481 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF,
|
|
|
482 (const void *) &ls[i].rcvbuf, sizeof(int))
|
|
|
483 == -1)
|
|
|
484 {
|
|
|
485 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
118
|
486 "setsockopt(SO_RCVBUF, %d) %V failed, ignored",
|
|
|
487 ls[i].rcvbuf, &ls[i].addr_text);
|
|
112
|
488 }
|
|
|
489 }
|
|
|
490
|
|
|
491 if (ls[i].sndbuf != -1) {
|
|
|
492 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF,
|
|
|
493 (const void *) &ls[i].sndbuf, sizeof(int))
|
|
|
494 == -1)
|
|
|
495 {
|
|
|
496 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
118
|
497 "setsockopt(SO_SNDBUF, %d) %V failed, ignored",
|
|
|
498 ls[i].sndbuf, &ls[i].addr_text);
|
|
112
|
499 }
|
|
|
500 }
|
|
|
501
|
|
584
|
502 #if (NGX_HAVE_SETFIB)
|
|
|
503 if (ls[i].setfib != -1) {
|
|
|
504 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SETFIB,
|
|
|
505 (const void *) &ls[i].setfib, sizeof(int))
|
|
|
506 == -1)
|
|
|
507 {
|
|
|
508 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
509 "setsockopt(SO_SETFIB, %d) %V failed, ignored",
|
|
|
510 ls[i].setfib, &ls[i].addr_text);
|
|
|
511 }
|
|
|
512 }
|
|
|
513 #endif
|
|
|
514
|
|
184
|
515 #if 0
|
|
|
516 if (1) {
|
|
|
517 int tcp_nodelay = 1;
|
|
|
518
|
|
|
519 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
520 (const void *) &tcp_nodelay, sizeof(int))
|
|
|
521 == -1)
|
|
|
522 {
|
|
|
523 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
524 "setsockopt(TCP_NODELAY) %V failed, ignored",
|
|
|
525 &ls[i].addr_text);
|
|
|
526 }
|
|
|
527 }
|
|
|
528 #endif
|
|
|
529
|
|
112
|
530 if (ls[i].listen) {
|
|
306
|
531
|
|
|
532 /* change backlog via listen() */
|
|
|
533
|
|
112
|
534 if (listen(ls[i].fd, ls[i].backlog) == -1) {
|
|
|
535 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
306
|
536 "listen() to %V, backlog %d failed, ignored",
|
|
112
|
537 &ls[i].addr_text, ls[i].backlog);
|
|
|
538 }
|
|
|
539 }
|
|
|
540
|
|
|
541 /*
|
|
|
542 * setting deferred mode should be last operation on socket,
|
|
|
543 * because code may prematurely continue cycle on failure
|
|
|
544 */
|
|
|
545
|
|
|
546 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
|
|
547
|
|
|
548 #ifdef SO_ACCEPTFILTER
|
|
|
549
|
|
176
|
550 if (ls[i].delete_deferred) {
|
|
|
551 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)
|
|
|
552 == -1)
|
|
112
|
553 {
|
|
|
554 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
555 "setsockopt(SO_ACCEPTFILTER, NULL) "
|
|
|
556 "for %V failed, ignored",
|
|
176
|
557 &ls[i].addr_text);
|
|
112
|
558
|
|
176
|
559 if (ls[i].accept_filter) {
|
|
112
|
560 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
|
561 "could not change the accept filter "
|
|
|
562 "to \"%s\" for %V, ignored",
|
|
176
|
563 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
564 }
|
|
|
565
|
|
|
566 continue;
|
|
|
567 }
|
|
|
568
|
|
176
|
569 ls[i].deferred_accept = 0;
|
|
112
|
570 }
|
|
|
571
|
|
176
|
572 if (ls[i].add_deferred) {
|
|
112
|
573 ngx_memzero(&af, sizeof(struct accept_filter_arg));
|
|
|
574 (void) ngx_cpystrn((u_char *) af.af_name,
|
|
176
|
575 (u_char *) ls[i].accept_filter, 16);
|
|
112
|
576
|
|
176
|
577 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER,
|
|
112
|
578 &af, sizeof(struct accept_filter_arg))
|
|
|
579 == -1)
|
|
|
580 {
|
|
|
581 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
582 "setsockopt(SO_ACCEPTFILTER, \"%s\") "
|
|
|
583 " for %V failed, ignored",
|
|
176
|
584 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
585 continue;
|
|
|
586 }
|
|
|
587
|
|
176
|
588 ls[i].deferred_accept = 1;
|
|
112
|
589 }
|
|
|
590
|
|
|
591 #endif
|
|
|
592
|
|
|
593 #ifdef TCP_DEFER_ACCEPT
|
|
|
594
|
|
176
|
595 if (ls[i].add_deferred || ls[i].delete_deferred) {
|
|
112
|
596
|
|
176
|
597 if (ls[i].add_deferred) {
|
|
|
598 timeout = (int) (ls[i].post_accept_timeout / 1000);
|
|
112
|
599
|
|
|
600 } else {
|
|
|
601 timeout = 0;
|
|
|
602 }
|
|
|
603
|
|
176
|
604 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT,
|
|
112
|
605 &timeout, sizeof(int))
|
|
|
606 == -1)
|
|
|
607 {
|
|
|
608 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
609 "setsockopt(TCP_DEFER_ACCEPT, %d) for %V failed, "
|
|
|
610 "ignored",
|
|
176
|
611 timeout, &ls[i].addr_text);
|
|
112
|
612
|
|
|
613 continue;
|
|
|
614 }
|
|
|
615 }
|
|
|
616
|
|
176
|
617 if (ls[i].add_deferred) {
|
|
|
618 ls[i].deferred_accept = 1;
|
|
112
|
619 }
|
|
|
620
|
|
|
621 #endif
|
|
|
622
|
|
|
623 #endif /* NGX_HAVE_DEFERRED_ACCEPT */
|
|
|
624 }
|
|
|
625
|
|
|
626 return;
|
|
|
627 }
|
|
|
628
|
|
|
629
|
|
|
630 void
|
|
70
|
631 ngx_close_listening_sockets(ngx_cycle_t *cycle)
|
|
0
|
632 {
|
|
92
|
633 ngx_uint_t i;
|
|
|
634 ngx_listening_t *ls;
|
|
|
635 ngx_connection_t *c;
|
|
0
|
636
|
|
|
637 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
|
638 return;
|
|
|
639 }
|
|
|
640
|
|
|
641 ngx_accept_mutex_held = 0;
|
|
160
|
642 ngx_use_accept_mutex = 0;
|
|
0
|
643
|
|
|
644 ls = cycle->listening.elts;
|
|
|
645 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
646
|
|
92
|
647 c = ls[i].connection;
|
|
0
|
648
|
|
480
|
649 if (c) {
|
|
|
650 if (c->read->active) {
|
|
|
651 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
652 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
362
|
653
|
|
480
|
654 } else if (ngx_event_flags & NGX_USE_EPOLL_EVENT) {
|
|
0
|
655
|
|
480
|
656 /*
|
|
|
657 * it seems that Linux-2.6.x OpenVZ sends events
|
|
|
658 * for closed shared listening sockets unless
|
|
|
659 * the events was explicity deleted
|
|
|
660 */
|
|
362
|
661
|
|
480
|
662 ngx_del_event(c->read, NGX_READ_EVENT, 0);
|
|
362
|
663
|
|
480
|
664 } else {
|
|
|
665 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
666 }
|
|
0
|
667 }
|
|
480
|
668
|
|
|
669 ngx_free_connection(c);
|
|
|
670
|
|
|
671 c->fd = (ngx_socket_t) -1;
|
|
0
|
672 }
|
|
|
673
|
|
112
|
674 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
|
|
|
675 "close listening %V #%d ", &ls[i].addr_text, ls[i].fd);
|
|
|
676
|
|
92
|
677 if (ngx_close_socket(ls[i].fd) == -1) {
|
|
0
|
678 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
10
|
679 ngx_close_socket_n " %V failed", &ls[i].addr_text);
|
|
0
|
680 }
|
|
498
|
681
|
|
538
|
682 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
|
683
|
|
|
684 if (ls[i].sockaddr->sa_family == AF_UNIX
|
|
552
|
685 && ngx_process <= NGX_PROCESS_MASTER
|
|
540
|
686 && ngx_new_binary == 0)
|
|
538
|
687 {
|
|
|
688 u_char *name = ls[i].addr_text.data + sizeof("unix:") - 1;
|
|
|
689
|
|
|
690 if (ngx_delete_file(name) == -1) {
|
|
|
691 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
|
692 ngx_delete_file_n " %s failed", name);
|
|
|
693 }
|
|
|
694 }
|
|
|
695
|
|
|
696 #endif
|
|
|
697
|
|
498
|
698 ls[i].fd = (ngx_socket_t) -1;
|
|
92
|
699 }
|
|
|
700 }
|
|
0
|
701
|
|
92
|
702
|
|
|
703 ngx_connection_t *
|
|
|
704 ngx_get_connection(ngx_socket_t s, ngx_log_t *log)
|
|
|
705 {
|
|
110
|
706 ngx_uint_t instance;
|
|
|
707 ngx_event_t *rev, *wev;
|
|
|
708 ngx_connection_t *c;
|
|
92
|
709
|
|
|
710 /* disable warning: Win32 SOCKET is u_int while UNIX socket is int */
|
|
|
711
|
|
|
712 if (ngx_cycle->files && (ngx_uint_t) s >= ngx_cycle->files_n) {
|
|
|
713 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
|
714 "the new socket has number %d, "
|
|
|
715 "but only %ui files are available",
|
|
|
716 s, ngx_cycle->files_n);
|
|
|
717 return NULL;
|
|
|
718 }
|
|
|
719
|
|
|
720 /* ngx_mutex_lock */
|
|
|
721
|
|
|
722 c = ngx_cycle->free_connections;
|
|
|
723
|
|
|
724 if (c == NULL) {
|
|
618
|
725 ngx_drain_connections();
|
|
|
726 c = ngx_cycle->free_connections;
|
|
|
727 }
|
|
|
728
|
|
|
729 if (c == NULL) {
|
|
92
|
730 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
412
|
731 "%ui worker_connections are not enough",
|
|
92
|
732 ngx_cycle->connection_n);
|
|
|
733
|
|
|
734 /* ngx_mutex_unlock */
|
|
|
735
|
|
|
736 return NULL;
|
|
|
737 }
|
|
|
738
|
|
|
739 ngx_cycle->free_connections = c->data;
|
|
|
740 ngx_cycle->free_connection_n--;
|
|
|
741
|
|
|
742 /* ngx_mutex_unlock */
|
|
|
743
|
|
|
744 if (ngx_cycle->files) {
|
|
|
745 ngx_cycle->files[s] = c;
|
|
|
746 }
|
|
|
747
|
|
110
|
748 rev = c->read;
|
|
|
749 wev = c->write;
|
|
|
750
|
|
|
751 ngx_memzero(c, sizeof(ngx_connection_t));
|
|
|
752
|
|
|
753 c->read = rev;
|
|
|
754 c->write = wev;
|
|
|
755 c->fd = s;
|
|
|
756 c->log = log;
|
|
|
757
|
|
|
758 instance = rev->instance;
|
|
|
759
|
|
|
760 ngx_memzero(rev, sizeof(ngx_event_t));
|
|
|
761 ngx_memzero(wev, sizeof(ngx_event_t));
|
|
|
762
|
|
|
763 rev->instance = !instance;
|
|
|
764 wev->instance = !instance;
|
|
|
765
|
|
|
766 rev->index = NGX_INVALID_INDEX;
|
|
|
767 wev->index = NGX_INVALID_INDEX;
|
|
|
768
|
|
|
769 rev->data = c;
|
|
|
770 wev->data = c;
|
|
|
771
|
|
|
772 wev->write = 1;
|
|
|
773
|
|
92
|
774 return c;
|
|
|
775 }
|
|
|
776
|
|
|
777
|
|
|
778 void
|
|
|
779 ngx_free_connection(ngx_connection_t *c)
|
|
|
780 {
|
|
|
781 /* ngx_mutex_lock */
|
|
|
782
|
|
|
783 c->data = ngx_cycle->free_connections;
|
|
|
784 ngx_cycle->free_connections = c;
|
|
|
785 ngx_cycle->free_connection_n++;
|
|
|
786
|
|
|
787 /* ngx_mutex_unlock */
|
|
|
788
|
|
|
789 if (ngx_cycle->files) {
|
|
|
790 ngx_cycle->files[c->fd] = NULL;
|
|
0
|
791 }
|
|
|
792 }
|
|
|
793
|
|
|
794
|
|
70
|
795 void
|
|
|
796 ngx_close_connection(ngx_connection_t *c)
|
|
0
|
797 {
|
|
366
|
798 ngx_err_t err;
|
|
|
799 ngx_uint_t log_error, level;
|
|
0
|
800 ngx_socket_t fd;
|
|
|
801
|
|
28
|
802 if (c->fd == -1) {
|
|
0
|
803 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
|
|
|
804 return;
|
|
|
805 }
|
|
|
806
|
|
|
807 if (c->read->timer_set) {
|
|
|
808 ngx_del_timer(c->read);
|
|
|
809 }
|
|
126
|
810
|
|
0
|
811 if (c->write->timer_set) {
|
|
|
812 ngx_del_timer(c->write);
|
|
|
813 }
|
|
126
|
814
|
|
0
|
815 if (ngx_del_conn) {
|
|
|
816 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
|
817
|
|
|
818 } else {
|
|
|
819 if (c->read->active || c->read->disabled) {
|
|
|
820 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
821 }
|
|
|
822
|
|
|
823 if (c->write->active || c->write->disabled) {
|
|
|
824 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
|
|
|
825 }
|
|
|
826 }
|
|
|
827
|
|
|
828 #if (NGX_THREADS)
|
|
|
829
|
|
|
830 /*
|
|
|
831 * we have to clean the connection information before the closing
|
|
|
832 * because another thread may reopen the same file descriptor
|
|
|
833 * before we clean the connection
|
|
|
834 */
|
|
|
835
|
|
112
|
836 ngx_mutex_lock(ngx_posted_events_mutex);
|
|
0
|
837
|
|
112
|
838 if (c->read->prev) {
|
|
|
839 ngx_delete_posted_event(c->read);
|
|
|
840 }
|
|
0
|
841
|
|
112
|
842 if (c->write->prev) {
|
|
|
843 ngx_delete_posted_event(c->write);
|
|
|
844 }
|
|
0
|
845
|
|
112
|
846 c->read->closed = 1;
|
|
|
847 c->write->closed = 1;
|
|
0
|
848
|
|
112
|
849 if (c->single_connection) {
|
|
|
850 ngx_unlock(&c->lock);
|
|
|
851 c->read->locked = 0;
|
|
|
852 c->write->locked = 0;
|
|
|
853 }
|
|
0
|
854
|
|
112
|
855 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
0
|
856
|
|
|
857 #else
|
|
|
858
|
|
|
859 if (c->read->prev) {
|
|
|
860 ngx_delete_posted_event(c->read);
|
|
|
861 }
|
|
|
862
|
|
|
863 if (c->write->prev) {
|
|
|
864 ngx_delete_posted_event(c->write);
|
|
|
865 }
|
|
|
866
|
|
|
867 c->read->closed = 1;
|
|
|
868 c->write->closed = 1;
|
|
|
869
|
|
|
870 #endif
|
|
|
871
|
|
618
|
872 ngx_reusable_connection(c, 0);
|
|
|
873
|
|
366
|
874 log_error = c->log_error;
|
|
|
875
|
|
92
|
876 ngx_free_connection(c);
|
|
|
877
|
|
0
|
878 fd = c->fd;
|
|
|
879 c->fd = (ngx_socket_t) -1;
|
|
|
880
|
|
|
881 if (ngx_close_socket(fd) == -1) {
|
|
|
882
|
|
366
|
883 err = ngx_socket_errno;
|
|
|
884
|
|
|
885 if (err == NGX_ECONNRESET || err == NGX_ENOTCONN) {
|
|
|
886
|
|
|
887 switch (log_error) {
|
|
|
888
|
|
|
889 case NGX_ERROR_INFO:
|
|
|
890 level = NGX_LOG_INFO;
|
|
|
891 break;
|
|
|
892
|
|
|
893 case NGX_ERROR_ERR:
|
|
|
894 level = NGX_LOG_ERR;
|
|
|
895 break;
|
|
|
896
|
|
|
897 default:
|
|
|
898 level = NGX_LOG_CRIT;
|
|
|
899 }
|
|
|
900
|
|
|
901 } else {
|
|
|
902 level = NGX_LOG_CRIT;
|
|
|
903 }
|
|
|
904
|
|
0
|
905 /* we use ngx_cycle->log because c->log was in c->pool */
|
|
|
906
|
|
366
|
907 ngx_log_error(level, ngx_cycle->log, err,
|
|
332
|
908 ngx_close_socket_n " %d failed", fd);
|
|
0
|
909 }
|
|
|
910 }
|
|
|
911
|
|
|
912
|
|
618
|
913 void
|
|
|
914 ngx_reusable_connection(ngx_connection_t *c, ngx_uint_t reusable)
|
|
|
915 {
|
|
|
916 ngx_log_debug1(NGX_LOG_DEBUG_CORE, c->log, 0,
|
|
|
917 "reusable connection: %ui", reusable);
|
|
|
918
|
|
|
919 if (c->reusable) {
|
|
|
920 ngx_queue_remove(&c->queue);
|
|
|
921 }
|
|
|
922
|
|
|
923 c->reusable = reusable;
|
|
|
924
|
|
|
925 if (reusable) {
|
|
|
926 /* need cast as ngx_cycle is volatile */
|
|
|
927
|
|
|
928 ngx_queue_insert_head(
|
|
|
929 (ngx_queue_t *) &ngx_cycle->reusable_connections_queue, &c->queue);
|
|
|
930 }
|
|
|
931 }
|
|
|
932
|
|
|
933
|
|
|
934 static void
|
|
|
935 ngx_drain_connections(void)
|
|
|
936 {
|
|
|
937 ngx_int_t i;
|
|
|
938 ngx_queue_t *q;
|
|
|
939 ngx_connection_t *c;
|
|
|
940
|
|
|
941 for (i = 0; i < 32; i++) {
|
|
|
942 if (ngx_queue_empty(&ngx_cycle->reusable_connections_queue)) {
|
|
|
943 break;
|
|
|
944 }
|
|
|
945
|
|
|
946 q = ngx_queue_last(&ngx_cycle->reusable_connections_queue);
|
|
|
947 c = ngx_queue_data(q, ngx_connection_t, queue);
|
|
|
948
|
|
|
949 ngx_log_debug0(NGX_LOG_DEBUG_CORE, c->log, 0,
|
|
|
950 "reusing connection");
|
|
|
951
|
|
|
952 c->close = 1;
|
|
|
953 c->read->handler(c->read);
|
|
|
954 }
|
|
|
955 }
|
|
|
956
|
|
|
957
|
|
70
|
958 ngx_int_t
|
|
492
|
959 ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s,
|
|
|
960 ngx_uint_t port)
|
|
|
961 {
|
|
|
962 socklen_t len;
|
|
|
963 ngx_uint_t addr;
|
|
|
964 u_char sa[NGX_SOCKADDRLEN];
|
|
|
965 struct sockaddr_in *sin;
|
|
|
966 #if (NGX_HAVE_INET6)
|
|
|
967 ngx_uint_t i;
|
|
|
968 struct sockaddr_in6 *sin6;
|
|
|
969 #endif
|
|
|
970
|
|
|
971 switch (c->local_sockaddr->sa_family) {
|
|
|
972
|
|
|
973 #if (NGX_HAVE_INET6)
|
|
|
974 case AF_INET6:
|
|
|
975 sin6 = (struct sockaddr_in6 *) c->local_sockaddr;
|
|
|
976
|
|
|
977 for (addr = 0, i = 0; addr == 0 && i < 16; i++) {
|
|
|
978 addr |= sin6->sin6_addr.s6_addr[i];
|
|
|
979 }
|
|
|
980
|
|
|
981 break;
|
|
|
982 #endif
|
|
|
983
|
|
|
984 default: /* AF_INET */
|
|
|
985 sin = (struct sockaddr_in *) c->local_sockaddr;
|
|
|
986 addr = sin->sin_addr.s_addr;
|
|
|
987 break;
|
|
|
988 }
|
|
|
989
|
|
|
990 if (addr == 0) {
|
|
|
991
|
|
|
992 len = NGX_SOCKADDRLEN;
|
|
|
993
|
|
|
994 if (getsockname(c->fd, (struct sockaddr *) &sa, &len) == -1) {
|
|
|
995 ngx_connection_error(c, ngx_socket_errno, "getsockname() failed");
|
|
|
996 return NGX_ERROR;
|
|
|
997 }
|
|
|
998
|
|
|
999 c->local_sockaddr = ngx_palloc(c->pool, len);
|
|
|
1000 if (c->local_sockaddr == NULL) {
|
|
|
1001 return NGX_ERROR;
|
|
|
1002 }
|
|
|
1003
|
|
|
1004 ngx_memcpy(c->local_sockaddr, &sa, len);
|
|
|
1005 }
|
|
|
1006
|
|
|
1007 if (s == NULL) {
|
|
|
1008 return NGX_OK;
|
|
|
1009 }
|
|
|
1010
|
|
|
1011 s->len = ngx_sock_ntop(c->local_sockaddr, s->data, s->len, port);
|
|
|
1012
|
|
|
1013 return NGX_OK;
|
|
|
1014 }
|
|
|
1015
|
|
|
1016
|
|
|
1017 ngx_int_t
|
|
70
|
1018 ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
|
|
0
|
1019 {
|
|
|
1020 ngx_uint_t level;
|
|
|
1021
|
|
484
|
1022 /* Winsock may return NGX_ECONNABORTED instead of NGX_ECONNRESET */
|
|
|
1023
|
|
|
1024 if ((err == NGX_ECONNRESET
|
|
|
1025 #if (NGX_WIN32)
|
|
|
1026 || err == NGX_ECONNABORTED
|
|
|
1027 #endif
|
|
|
1028 ) && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
|
|
|
1029 {
|
|
0
|
1030 return 0;
|
|
|
1031 }
|
|
|
1032
|
|
460
|
1033 #if (NGX_SOLARIS)
|
|
|
1034 if (err == NGX_EINVAL && c->log_error == NGX_ERROR_IGNORE_EINVAL) {
|
|
|
1035 return 0;
|
|
|
1036 }
|
|
|
1037 #endif
|
|
|
1038
|
|
86
|
1039 if (err == 0
|
|
|
1040 || err == NGX_ECONNRESET
|
|
484
|
1041 #if (NGX_WIN32)
|
|
|
1042 || err == NGX_ECONNABORTED
|
|
|
1043 #else
|
|
0
|
1044 || err == NGX_EPIPE
|
|
|
1045 #endif
|
|
|
1046 || err == NGX_ENOTCONN
|
|
136
|
1047 || err == NGX_ETIMEDOUT
|
|
0
|
1048 || err == NGX_ECONNREFUSED
|
|
364
|
1049 || err == NGX_ENETDOWN
|
|
|
1050 || err == NGX_ENETUNREACH
|
|
|
1051 || err == NGX_EHOSTDOWN
|
|
0
|
1052 || err == NGX_EHOSTUNREACH)
|
|
|
1053 {
|
|
|
1054 switch (c->log_error) {
|
|
|
1055
|
|
460
|
1056 case NGX_ERROR_IGNORE_EINVAL:
|
|
0
|
1057 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
1058 case NGX_ERROR_INFO:
|
|
|
1059 level = NGX_LOG_INFO;
|
|
|
1060 break;
|
|
|
1061
|
|
530
|
1062 default:
|
|
0
|
1063 level = NGX_LOG_ERR;
|
|
|
1064 }
|
|
|
1065
|
|
|
1066 } else {
|
|
366
|
1067 level = NGX_LOG_ALERT;
|
|
0
|
1068 }
|
|
|
1069
|
|
|
1070 ngx_log_error(level, c->log, err, text);
|
|
|
1071
|
|
|
1072 return NGX_ERROR;
|
|
|
1073 }
|
