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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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660
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4 * Copyright (C) Nginx, Inc.
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0
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_event.h>
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11
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12
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13 ngx_os_io_t ngx_io;
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14
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15
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618
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16 static void ngx_drain_connections(void);
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17
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18
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70
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19 ngx_listening_t *
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486
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20 ngx_create_listening(ngx_conf_t *cf, void *sockaddr, socklen_t socklen)
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0
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21 {
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538
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22 size_t len;
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486
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23 ngx_listening_t *ls;
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24 struct sockaddr *sa;
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25 u_char text[NGX_SOCKADDR_STRLEN];
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0
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26
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50
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27 ls = ngx_array_push(&cf->cycle->listening);
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28 if (ls == NULL) {
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0
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29 return NULL;
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30 }
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31
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32 ngx_memzero(ls, sizeof(ngx_listening_t));
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33
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486
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34 sa = ngx_palloc(cf->pool, socklen);
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35 if (sa == NULL) {
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0
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36 return NULL;
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37 }
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38
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486
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39 ngx_memcpy(sa, sockaddr, socklen);
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0
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40
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486
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41 ls->sockaddr = sa;
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42 ls->socklen = socklen;
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10
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43
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538
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44 len = ngx_sock_ntop(sa, text, NGX_SOCKADDR_STRLEN, 1);
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45 ls->addr_text.len = len;
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486
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46
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47 switch (ls->sockaddr->sa_family) {
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48 #if (NGX_HAVE_INET6)
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49 case AF_INET6:
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50 ls->addr_text_max_len = NGX_INET6_ADDRSTRLEN;
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51 break;
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52 #endif
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538
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53 #if (NGX_HAVE_UNIX_DOMAIN)
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54 case AF_UNIX:
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55 ls->addr_text_max_len = NGX_UNIX_ADDRSTRLEN;
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56 len++;
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57 break;
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58 #endif
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486
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59 case AF_INET:
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60 ls->addr_text_max_len = NGX_INET_ADDRSTRLEN;
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61 break;
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62 default:
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63 ls->addr_text_max_len = NGX_SOCKADDR_STRLEN;
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64 break;
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65 }
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66
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538
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67 ls->addr_text.data = ngx_pnalloc(cf->pool, len);
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68 if (ls->addr_text.data == NULL) {
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69 return NULL;
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70 }
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71
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72 ngx_memcpy(ls->addr_text.data, text, len);
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73
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74 ls->fd = (ngx_socket_t) -1;
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75 ls->type = SOCK_STREAM;
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76
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486
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77 ls->backlog = NGX_LISTEN_BACKLOG;
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78 ls->rcvbuf = -1;
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79 ls->sndbuf = -1;
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0
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80
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584
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81 #if (NGX_HAVE_SETFIB)
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82 ls->setfib = -1;
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83 #endif
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84
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0
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85 return ls;
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86 }
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87
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88
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70
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89 ngx_int_t
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90 ngx_set_inherited_sockets(ngx_cycle_t *cycle)
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0
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91 {
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72
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92 size_t len;
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93 ngx_uint_t i;
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94 ngx_listening_t *ls;
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112
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95 socklen_t olen;
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72
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96 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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90
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97 ngx_err_t err;
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72
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98 struct accept_filter_arg af;
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99 #endif
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100 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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101 int timeout;
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102 #endif
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0
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103
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104 ls = cycle->listening.elts;
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105 for (i = 0; i < cycle->listening.nelts; i++) {
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106
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574
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107 ls[i].sockaddr = ngx_palloc(cycle->pool, NGX_SOCKADDRLEN);
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0
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108 if (ls[i].sockaddr == NULL) {
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109 return NGX_ERROR;
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110 }
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111
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574
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112 ls[i].socklen = NGX_SOCKADDRLEN;
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0
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113 if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
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114 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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115 "getsockname() of the inherited "
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116 "socket #%d failed", ls[i].fd);
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117 ls[i].ignore = 1;
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118 continue;
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119 }
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120
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448
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121 switch (ls[i].sockaddr->sa_family) {
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0
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122
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448
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123 #if (NGX_HAVE_INET6)
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124 case AF_INET6:
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125 ls[i].addr_text_max_len = NGX_INET6_ADDRSTRLEN;
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542
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126 len = NGX_INET6_ADDRSTRLEN + sizeof(":65535") - 1;
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127 break;
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128 #endif
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129
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130 #if (NGX_HAVE_UNIX_DOMAIN)
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131 case AF_UNIX:
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132 ls[i].addr_text_max_len = NGX_UNIX_ADDRSTRLEN;
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133 len = NGX_UNIX_ADDRSTRLEN;
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448
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134 break;
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135 #endif
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136
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137 case AF_INET:
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138 ls[i].addr_text_max_len = NGX_INET_ADDRSTRLEN;
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542
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139 len = NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1;
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448
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140 break;
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141
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142 default:
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0
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143 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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144 "the inherited socket #%d has "
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448
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145 "an unsupported protocol family", ls[i].fd);
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0
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146 ls[i].ignore = 1;
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147 continue;
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148 }
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10
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149
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448
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150 ls[i].addr_text.data = ngx_pnalloc(cycle->pool, len);
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0
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151 if (ls[i].addr_text.data == NULL) {
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152 return NGX_ERROR;
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153 }
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154
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448
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155 len = ngx_sock_ntop(ls[i].sockaddr, ls[i].addr_text.data, len, 1);
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10
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156 if (len == 0) {
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0
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157 return NGX_ERROR;
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158 }
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10
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159
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448
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160 ls[i].addr_text.len = len;
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72
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161
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326
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162 ls[i].backlog = NGX_LISTEN_BACKLOG;
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86
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163
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112
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164 olen = sizeof(int);
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165
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166 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF, (void *) &ls[i].rcvbuf,
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167 &olen)
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168 == -1)
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169 {
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170 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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171 "getsockopt(SO_RCVBUF) %V failed, ignored",
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172 &ls[i].addr_text);
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173
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174 ls[i].rcvbuf = -1;
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175 }
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176
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177 olen = sizeof(int);
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178
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179 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF, (void *) &ls[i].sndbuf,
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180 &olen)
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181 == -1)
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182 {
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183 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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184 "getsockopt(SO_SNDBUF) %V failed, ignored",
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185 &ls[i].addr_text);
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186
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187 ls[i].sndbuf = -1;
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188 }
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189
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584
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190 #if 0
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191 /* SO_SETFIB is currently a set only option */
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192
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193 #if (NGX_HAVE_SETFIB)
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194
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195 if (getsockopt(ls[i].setfib, SOL_SOCKET, SO_SETFIB,
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196 (void *) &ls[i].setfib, &olen)
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197 == -1)
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198 {
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199 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
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200 "getsockopt(SO_SETFIB) %V failed, ignored",
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201 &ls[i].addr_text);
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202
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203 ls[i].setfib = -1;
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204 }
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205
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206 #endif
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207 #endif
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208
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72
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209 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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210
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211 ngx_memzero(&af, sizeof(struct accept_filter_arg));
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112
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212 olen = sizeof(struct accept_filter_arg);
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72
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213
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112
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214 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, &af, &olen)
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72
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215 == -1)
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216 {
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90
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217 err = ngx_errno;
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218
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219 if (err == NGX_EINVAL) {
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220 continue;
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221 }
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222
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223 ngx_log_error(NGX_LOG_NOTICE, cycle->log, err,
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72
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224 "getsockopt(SO_ACCEPTFILTER) for %V failed, ignored",
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225 &ls[i].addr_text);
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226 continue;
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227 }
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228
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112
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229 if (olen < sizeof(struct accept_filter_arg) || af.af_name[0] == '\0') {
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72
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230 continue;
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231 }
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232
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233 ls[i].accept_filter = ngx_palloc(cycle->pool, 16);
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234 if (ls[i].accept_filter == NULL) {
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235 return NGX_ERROR;
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236 }
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237
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238 (void) ngx_cpystrn((u_char *) ls[i].accept_filter,
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239 (u_char *) af.af_name, 16);
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240 #endif
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241
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242 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
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243
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244 timeout = 0;
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112
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245 olen = sizeof(int);
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72
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246
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112
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247 if (getsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, &olen)
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72
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248 == -1)
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249 {
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250 ngx_log_error(NGX_LOG_NOTICE, cycle->log, ngx_errno,
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251 "getsockopt(TCP_DEFER_ACCEPT) for %V failed, ignored",
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252 &ls[i].addr_text);
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253 continue;
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254 }
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255
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114
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256 if (olen < sizeof(int) || timeout == 0) {
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72
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257 continue;
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258 }
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259
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260 ls[i].deferred_accept = 1;
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261 #endif
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0
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262 }
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263
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264 return NGX_OK;
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265 }
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266
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267
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70
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268 ngx_int_t
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269 ngx_open_listening_sockets(ngx_cycle_t *cycle)
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0
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270 {
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112
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271 int reuseaddr;
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272 ngx_uint_t i, tries, failed;
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0
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273 ngx_err_t err;
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274 ngx_log_t *log;
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275 ngx_socket_t s;
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276 ngx_listening_t *ls;
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277
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278 reuseaddr = 1;
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279 #if (NGX_SUPPRESS_WARN)
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280 failed = 0;
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281 #endif
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282
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283 log = cycle->log;
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284
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112
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285 /* TODO: configurable try number */
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0
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286
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378
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287 for (tries = 5; tries; tries--) {
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0
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288 failed = 0;
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289
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290 /* for each listening socket */
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291
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292 ls = cycle->listening.elts;
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293 for (i = 0; i < cycle->listening.nelts; i++) {
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294
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295 if (ls[i].ignore) {
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296 continue;
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297 }
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298
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299 if (ls[i].fd != -1) {
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300 continue;
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301 }
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302
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303 if (ls[i].inherited) {
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304
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305 /* TODO: close on exit */
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306 /* TODO: nonblocking */
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307 /* TODO: deferred accept */
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308
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309 continue;
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310 }
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311
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400
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312 s = ngx_socket(ls[i].sockaddr->sa_family, ls[i].type, 0);
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0
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313
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314 if (s == -1) {
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315 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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316 ngx_socket_n " %V failed", &ls[i].addr_text);
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0
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317 return NGX_ERROR;
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318 }
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319
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320 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
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112
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321 (const void *) &reuseaddr, sizeof(int))
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322 == -1)
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323 {
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0
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324 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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325 "setsockopt(SO_REUSEADDR) %V failed",
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326 &ls[i].addr_text);
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112
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327
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306
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328 if (ngx_close_socket(s) == -1) {
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112
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329 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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330 ngx_close_socket_n " %V failed",
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331 &ls[i].addr_text);
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306
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332 }
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112
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333
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0
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334 return NGX_ERROR;
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335 }
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336
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460
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337 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
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338
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339 if (ls[i].sockaddr->sa_family == AF_INET6 && ls[i].ipv6only) {
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340 int ipv6only;
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341
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342 ipv6only = (ls[i].ipv6only == 1);
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343
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344 if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
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345 (const void *) &ipv6only, sizeof(int))
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346 == -1)
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347 {
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486
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348 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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460
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349 "setsockopt(IPV6_V6ONLY) %V failed, ignored",
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350 &ls[i].addr_text);
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351 }
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352 }
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|
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353 #endif
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0
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354 /* TODO: close on exit */
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355
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|
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356 if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
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357 if (ngx_nonblocking(s) == -1) {
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358 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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359 ngx_nonblocking_n " %V failed",
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360 &ls[i].addr_text);
|
|
112
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361
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306
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362 if (ngx_close_socket(s) == -1) {
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112
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363 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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364 ngx_close_socket_n " %V failed",
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365 &ls[i].addr_text);
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306
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366 }
|
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112
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367
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0
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368 return NGX_ERROR;
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369 }
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370 }
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371
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486
|
372 ngx_log_debug2(NGX_LOG_DEBUG_CORE, log, 0,
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142
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373 "bind() %V #%d ", &ls[i].addr_text, s);
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374
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0
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375 if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
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376 err = ngx_socket_errno;
|
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112
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377
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|
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378 if (err == NGX_EADDRINUSE && ngx_test_config) {
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379 continue;
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380 }
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381
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0
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382 ngx_log_error(NGX_LOG_EMERG, log, err,
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|
10
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383 "bind() to %V failed", &ls[i].addr_text);
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0
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384
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|
306
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385 if (ngx_close_socket(s) == -1) {
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0
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386 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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387 ngx_close_socket_n " %V failed",
|
|
|
388 &ls[i].addr_text);
|
|
306
|
389 }
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|
0
|
390
|
|
112
|
391 if (err != NGX_EADDRINUSE) {
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|
|
392 return NGX_ERROR;
|
|
|
393 }
|
|
|
394
|
|
0
|
395 failed = 1;
|
|
112
|
396
|
|
0
|
397 continue;
|
|
|
398 }
|
|
|
399
|
|
540
|
400 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
|
401
|
|
554
|
402 if (ls[i].sockaddr->sa_family == AF_UNIX) {
|
|
|
403 mode_t mode;
|
|
|
404 u_char *name;
|
|
|
405
|
|
|
406 name = ls[i].addr_text.data + sizeof("unix:") - 1;
|
|
|
407 mode = (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
|
|
540
|
408
|
|
554
|
409 if (chmod((char *) name, mode) == -1) {
|
|
|
410 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
|
|
|
411 "chmod() \"%s\" failed", name);
|
|
|
412 }
|
|
|
413
|
|
|
414 if (ngx_test_config) {
|
|
|
415 if (ngx_delete_file(name) == -1) {
|
|
|
416 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
|
|
|
417 ngx_delete_file_n " %s failed", name);
|
|
|
418 }
|
|
540
|
419 }
|
|
|
420 }
|
|
|
421 #endif
|
|
|
422
|
|
306
|
423 if (listen(s, ls[i].backlog) == -1) {
|
|
|
424 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
|
425 "listen() to %V, backlog %d failed",
|
|
|
426 &ls[i].addr_text, ls[i].backlog);
|
|
|
427
|
|
|
428 if (ngx_close_socket(s) == -1) {
|
|
|
429 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
|
430 ngx_close_socket_n " %V failed",
|
|
|
431 &ls[i].addr_text);
|
|
|
432 }
|
|
|
433
|
|
|
434 return NGX_ERROR;
|
|
|
435 }
|
|
|
436
|
|
112
|
437 ls[i].listen = 1;
|
|
0
|
438
|
|
|
439 ls[i].fd = s;
|
|
|
440 }
|
|
|
441
|
|
112
|
442 if (!failed) {
|
|
0
|
443 break;
|
|
112
|
444 }
|
|
0
|
445
|
|
|
446 /* TODO: delay configurable */
|
|
|
447
|
|
|
448 ngx_log_error(NGX_LOG_NOTICE, log, 0,
|
|
|
449 "try again to bind() after 500ms");
|
|
112
|
450
|
|
0
|
451 ngx_msleep(500);
|
|
|
452 }
|
|
|
453
|
|
|
454 if (failed) {
|
|
26
|
455 ngx_log_error(NGX_LOG_EMERG, log, 0, "still could not bind()");
|
|
0
|
456 return NGX_ERROR;
|
|
|
457 }
|
|
|
458
|
|
|
459 return NGX_OK;
|
|
|
460 }
|
|
|
461
|
|
|
462
|
|
70
|
463 void
|
|
486
|
464 ngx_configure_listening_sockets(ngx_cycle_t *cycle)
|
|
112
|
465 {
|
|
654
|
466 int keepalive;
|
|
112
|
467 ngx_uint_t i;
|
|
|
468 ngx_listening_t *ls;
|
|
|
469
|
|
|
470 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
|
|
|
471 struct accept_filter_arg af;
|
|
|
472 #endif
|
|
|
473 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
|
|
|
474 int timeout;
|
|
|
475 #endif
|
|
|
476
|
|
|
477 ls = cycle->listening.elts;
|
|
|
478 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
479
|
|
486
|
480 ls[i].log = *ls[i].logp;
|
|
|
481
|
|
112
|
482 if (ls[i].rcvbuf != -1) {
|
|
|
483 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF,
|
|
|
484 (const void *) &ls[i].rcvbuf, sizeof(int))
|
|
|
485 == -1)
|
|
|
486 {
|
|
|
487 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
118
|
488 "setsockopt(SO_RCVBUF, %d) %V failed, ignored",
|
|
|
489 ls[i].rcvbuf, &ls[i].addr_text);
|
|
112
|
490 }
|
|
|
491 }
|
|
|
492
|
|
|
493 if (ls[i].sndbuf != -1) {
|
|
|
494 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF,
|
|
|
495 (const void *) &ls[i].sndbuf, sizeof(int))
|
|
|
496 == -1)
|
|
|
497 {
|
|
|
498 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
118
|
499 "setsockopt(SO_SNDBUF, %d) %V failed, ignored",
|
|
|
500 ls[i].sndbuf, &ls[i].addr_text);
|
|
112
|
501 }
|
|
|
502 }
|
|
|
503
|
|
654
|
504 if (ls[i].keepalive) {
|
|
|
505 keepalive = (ls[i].keepalive == 1) ? 1 : 0;
|
|
|
506
|
|
|
507 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_KEEPALIVE,
|
|
|
508 (const void *) &keepalive, sizeof(int))
|
|
|
509 == -1)
|
|
|
510 {
|
|
|
511 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
512 "setsockopt(SO_KEEPALIVE, %d) %V failed, ignored",
|
|
|
513 keepalive, &ls[i].addr_text);
|
|
|
514 }
|
|
|
515 }
|
|
|
516
|
|
|
517 #if (NGX_HAVE_KEEPALIVE_TUNABLE)
|
|
|
518
|
|
|
519 if (ls[i].keepidle) {
|
|
|
520 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPIDLE,
|
|
|
521 (const void *) &ls[i].keepidle, sizeof(int))
|
|
|
522 == -1)
|
|
|
523 {
|
|
|
524 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
525 "setsockopt(TCP_KEEPIDLE, %d) %V failed, ignored",
|
|
|
526 ls[i].keepidle, &ls[i].addr_text);
|
|
|
527 }
|
|
|
528 }
|
|
|
529
|
|
|
530 if (ls[i].keepintvl) {
|
|
|
531 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPINTVL,
|
|
|
532 (const void *) &ls[i].keepintvl, sizeof(int))
|
|
|
533 == -1)
|
|
|
534 {
|
|
|
535 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
536 "setsockopt(TCP_KEEPINTVL, %d) %V failed, ignored",
|
|
|
537 ls[i].keepintvl, &ls[i].addr_text);
|
|
|
538 }
|
|
|
539 }
|
|
|
540
|
|
|
541 if (ls[i].keepcnt) {
|
|
|
542 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPCNT,
|
|
|
543 (const void *) &ls[i].keepcnt, sizeof(int))
|
|
|
544 == -1)
|
|
|
545 {
|
|
|
546 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
547 "setsockopt(TCP_KEEPCNT, %d) %V failed, ignored",
|
|
|
548 ls[i].keepcnt, &ls[i].addr_text);
|
|
|
549 }
|
|
|
550 }
|
|
|
551
|
|
|
552 #endif
|
|
|
553
|
|
584
|
554 #if (NGX_HAVE_SETFIB)
|
|
|
555 if (ls[i].setfib != -1) {
|
|
|
556 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SETFIB,
|
|
|
557 (const void *) &ls[i].setfib, sizeof(int))
|
|
|
558 == -1)
|
|
|
559 {
|
|
|
560 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
561 "setsockopt(SO_SETFIB, %d) %V failed, ignored",
|
|
|
562 ls[i].setfib, &ls[i].addr_text);
|
|
|
563 }
|
|
|
564 }
|
|
|
565 #endif
|
|
|
566
|
|
184
|
567 #if 0
|
|
|
568 if (1) {
|
|
|
569 int tcp_nodelay = 1;
|
|
|
570
|
|
|
571 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
572 (const void *) &tcp_nodelay, sizeof(int))
|
|
|
573 == -1)
|
|
|
574 {
|
|
|
575 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
|
576 "setsockopt(TCP_NODELAY) %V failed, ignored",
|
|
|
577 &ls[i].addr_text);
|
|
|
578 }
|
|
|
579 }
|
|
|
580 #endif
|
|
|
581
|
|
112
|
582 if (ls[i].listen) {
|
|
306
|
583
|
|
|
584 /* change backlog via listen() */
|
|
|
585
|
|
112
|
586 if (listen(ls[i].fd, ls[i].backlog) == -1) {
|
|
|
587 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
|
|
306
|
588 "listen() to %V, backlog %d failed, ignored",
|
|
112
|
589 &ls[i].addr_text, ls[i].backlog);
|
|
|
590 }
|
|
|
591 }
|
|
|
592
|
|
|
593 /*
|
|
|
594 * setting deferred mode should be last operation on socket,
|
|
|
595 * because code may prematurely continue cycle on failure
|
|
|
596 */
|
|
|
597
|
|
|
598 #if (NGX_HAVE_DEFERRED_ACCEPT)
|
|
|
599
|
|
|
600 #ifdef SO_ACCEPTFILTER
|
|
|
601
|
|
176
|
602 if (ls[i].delete_deferred) {
|
|
|
603 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)
|
|
|
604 == -1)
|
|
112
|
605 {
|
|
|
606 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
607 "setsockopt(SO_ACCEPTFILTER, NULL) "
|
|
|
608 "for %V failed, ignored",
|
|
176
|
609 &ls[i].addr_text);
|
|
112
|
610
|
|
176
|
611 if (ls[i].accept_filter) {
|
|
112
|
612 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
|
|
|
613 "could not change the accept filter "
|
|
|
614 "to \"%s\" for %V, ignored",
|
|
176
|
615 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
616 }
|
|
|
617
|
|
|
618 continue;
|
|
|
619 }
|
|
|
620
|
|
176
|
621 ls[i].deferred_accept = 0;
|
|
112
|
622 }
|
|
|
623
|
|
176
|
624 if (ls[i].add_deferred) {
|
|
112
|
625 ngx_memzero(&af, sizeof(struct accept_filter_arg));
|
|
|
626 (void) ngx_cpystrn((u_char *) af.af_name,
|
|
176
|
627 (u_char *) ls[i].accept_filter, 16);
|
|
112
|
628
|
|
176
|
629 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER,
|
|
112
|
630 &af, sizeof(struct accept_filter_arg))
|
|
|
631 == -1)
|
|
|
632 {
|
|
|
633 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
634 "setsockopt(SO_ACCEPTFILTER, \"%s\") "
|
|
634
|
635 "for %V failed, ignored",
|
|
176
|
636 ls[i].accept_filter, &ls[i].addr_text);
|
|
112
|
637 continue;
|
|
|
638 }
|
|
|
639
|
|
176
|
640 ls[i].deferred_accept = 1;
|
|
112
|
641 }
|
|
|
642
|
|
|
643 #endif
|
|
|
644
|
|
|
645 #ifdef TCP_DEFER_ACCEPT
|
|
|
646
|
|
176
|
647 if (ls[i].add_deferred || ls[i].delete_deferred) {
|
|
112
|
648
|
|
176
|
649 if (ls[i].add_deferred) {
|
|
|
650 timeout = (int) (ls[i].post_accept_timeout / 1000);
|
|
112
|
651
|
|
|
652 } else {
|
|
|
653 timeout = 0;
|
|
|
654 }
|
|
|
655
|
|
176
|
656 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT,
|
|
112
|
657 &timeout, sizeof(int))
|
|
|
658 == -1)
|
|
|
659 {
|
|
|
660 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
|
|
|
661 "setsockopt(TCP_DEFER_ACCEPT, %d) for %V failed, "
|
|
|
662 "ignored",
|
|
176
|
663 timeout, &ls[i].addr_text);
|
|
112
|
664
|
|
|
665 continue;
|
|
|
666 }
|
|
|
667 }
|
|
|
668
|
|
176
|
669 if (ls[i].add_deferred) {
|
|
|
670 ls[i].deferred_accept = 1;
|
|
112
|
671 }
|
|
|
672
|
|
|
673 #endif
|
|
|
674
|
|
|
675 #endif /* NGX_HAVE_DEFERRED_ACCEPT */
|
|
|
676 }
|
|
|
677
|
|
|
678 return;
|
|
|
679 }
|
|
|
680
|
|
|
681
|
|
|
682 void
|
|
70
|
683 ngx_close_listening_sockets(ngx_cycle_t *cycle)
|
|
0
|
684 {
|
|
92
|
685 ngx_uint_t i;
|
|
|
686 ngx_listening_t *ls;
|
|
|
687 ngx_connection_t *c;
|
|
0
|
688
|
|
|
689 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
|
690 return;
|
|
|
691 }
|
|
|
692
|
|
|
693 ngx_accept_mutex_held = 0;
|
|
160
|
694 ngx_use_accept_mutex = 0;
|
|
0
|
695
|
|
|
696 ls = cycle->listening.elts;
|
|
|
697 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
698
|
|
92
|
699 c = ls[i].connection;
|
|
0
|
700
|
|
480
|
701 if (c) {
|
|
|
702 if (c->read->active) {
|
|
|
703 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
704 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
362
|
705
|
|
480
|
706 } else if (ngx_event_flags & NGX_USE_EPOLL_EVENT) {
|
|
0
|
707
|
|
480
|
708 /*
|
|
|
709 * it seems that Linux-2.6.x OpenVZ sends events
|
|
|
710 * for closed shared listening sockets unless
|
|
|
711 * the events was explicity deleted
|
|
|
712 */
|
|
362
|
713
|
|
480
|
714 ngx_del_event(c->read, NGX_READ_EVENT, 0);
|
|
362
|
715
|
|
480
|
716 } else {
|
|
|
717 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
718 }
|
|
0
|
719 }
|
|
480
|
720
|
|
|
721 ngx_free_connection(c);
|
|
|
722
|
|
|
723 c->fd = (ngx_socket_t) -1;
|
|
0
|
724 }
|
|
|
725
|
|
112
|
726 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
|
|
|
727 "close listening %V #%d ", &ls[i].addr_text, ls[i].fd);
|
|
|
728
|
|
92
|
729 if (ngx_close_socket(ls[i].fd) == -1) {
|
|
0
|
730 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
10
|
731 ngx_close_socket_n " %V failed", &ls[i].addr_text);
|
|
0
|
732 }
|
|
498
|
733
|
|
538
|
734 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
|
735
|
|
|
736 if (ls[i].sockaddr->sa_family == AF_UNIX
|
|
552
|
737 && ngx_process <= NGX_PROCESS_MASTER
|
|
540
|
738 && ngx_new_binary == 0)
|
|
538
|
739 {
|
|
|
740 u_char *name = ls[i].addr_text.data + sizeof("unix:") - 1;
|
|
|
741
|
|
|
742 if (ngx_delete_file(name) == -1) {
|
|
|
743 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
|
744 ngx_delete_file_n " %s failed", name);
|
|
|
745 }
|
|
|
746 }
|
|
|
747
|
|
|
748 #endif
|
|
|
749
|
|
498
|
750 ls[i].fd = (ngx_socket_t) -1;
|
|
92
|
751 }
|
|
|
752 }
|
|
0
|
753
|
|
92
|
754
|
|
|
755 ngx_connection_t *
|
|
|
756 ngx_get_connection(ngx_socket_t s, ngx_log_t *log)
|
|
|
757 {
|
|
110
|
758 ngx_uint_t instance;
|
|
|
759 ngx_event_t *rev, *wev;
|
|
|
760 ngx_connection_t *c;
|
|
92
|
761
|
|
|
762 /* disable warning: Win32 SOCKET is u_int while UNIX socket is int */
|
|
|
763
|
|
|
764 if (ngx_cycle->files && (ngx_uint_t) s >= ngx_cycle->files_n) {
|
|
|
765 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
|
766 "the new socket has number %d, "
|
|
|
767 "but only %ui files are available",
|
|
|
768 s, ngx_cycle->files_n);
|
|
|
769 return NULL;
|
|
|
770 }
|
|
|
771
|
|
|
772 /* ngx_mutex_lock */
|
|
|
773
|
|
|
774 c = ngx_cycle->free_connections;
|
|
|
775
|
|
|
776 if (c == NULL) {
|
|
618
|
777 ngx_drain_connections();
|
|
|
778 c = ngx_cycle->free_connections;
|
|
|
779 }
|
|
|
780
|
|
|
781 if (c == NULL) {
|
|
92
|
782 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
412
|
783 "%ui worker_connections are not enough",
|
|
92
|
784 ngx_cycle->connection_n);
|
|
|
785
|
|
|
786 /* ngx_mutex_unlock */
|
|
|
787
|
|
|
788 return NULL;
|
|
|
789 }
|
|
|
790
|
|
|
791 ngx_cycle->free_connections = c->data;
|
|
|
792 ngx_cycle->free_connection_n--;
|
|
|
793
|
|
|
794 /* ngx_mutex_unlock */
|
|
|
795
|
|
|
796 if (ngx_cycle->files) {
|
|
|
797 ngx_cycle->files[s] = c;
|
|
|
798 }
|
|
|
799
|
|
110
|
800 rev = c->read;
|
|
|
801 wev = c->write;
|
|
|
802
|
|
|
803 ngx_memzero(c, sizeof(ngx_connection_t));
|
|
|
804
|
|
|
805 c->read = rev;
|
|
|
806 c->write = wev;
|
|
|
807 c->fd = s;
|
|
|
808 c->log = log;
|
|
|
809
|
|
|
810 instance = rev->instance;
|
|
|
811
|
|
|
812 ngx_memzero(rev, sizeof(ngx_event_t));
|
|
|
813 ngx_memzero(wev, sizeof(ngx_event_t));
|
|
|
814
|
|
|
815 rev->instance = !instance;
|
|
|
816 wev->instance = !instance;
|
|
|
817
|
|
|
818 rev->index = NGX_INVALID_INDEX;
|
|
|
819 wev->index = NGX_INVALID_INDEX;
|
|
|
820
|
|
|
821 rev->data = c;
|
|
|
822 wev->data = c;
|
|
|
823
|
|
|
824 wev->write = 1;
|
|
|
825
|
|
92
|
826 return c;
|
|
|
827 }
|
|
|
828
|
|
|
829
|
|
|
830 void
|
|
|
831 ngx_free_connection(ngx_connection_t *c)
|
|
|
832 {
|
|
|
833 /* ngx_mutex_lock */
|
|
|
834
|
|
|
835 c->data = ngx_cycle->free_connections;
|
|
|
836 ngx_cycle->free_connections = c;
|
|
|
837 ngx_cycle->free_connection_n++;
|
|
|
838
|
|
|
839 /* ngx_mutex_unlock */
|
|
|
840
|
|
|
841 if (ngx_cycle->files) {
|
|
|
842 ngx_cycle->files[c->fd] = NULL;
|
|
0
|
843 }
|
|
|
844 }
|
|
|
845
|
|
|
846
|
|
70
|
847 void
|
|
|
848 ngx_close_connection(ngx_connection_t *c)
|
|
0
|
849 {
|
|
366
|
850 ngx_err_t err;
|
|
|
851 ngx_uint_t log_error, level;
|
|
0
|
852 ngx_socket_t fd;
|
|
|
853
|
|
28
|
854 if (c->fd == -1) {
|
|
0
|
855 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
|
|
|
856 return;
|
|
|
857 }
|
|
|
858
|
|
|
859 if (c->read->timer_set) {
|
|
|
860 ngx_del_timer(c->read);
|
|
|
861 }
|
|
126
|
862
|
|
0
|
863 if (c->write->timer_set) {
|
|
|
864 ngx_del_timer(c->write);
|
|
|
865 }
|
|
126
|
866
|
|
0
|
867 if (ngx_del_conn) {
|
|
|
868 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
|
869
|
|
|
870 } else {
|
|
|
871 if (c->read->active || c->read->disabled) {
|
|
|
872 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
873 }
|
|
|
874
|
|
|
875 if (c->write->active || c->write->disabled) {
|
|
|
876 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
|
|
|
877 }
|
|
|
878 }
|
|
|
879
|
|
|
880 #if (NGX_THREADS)
|
|
|
881
|
|
|
882 /*
|
|
|
883 * we have to clean the connection information before the closing
|
|
|
884 * because another thread may reopen the same file descriptor
|
|
|
885 * before we clean the connection
|
|
|
886 */
|
|
|
887
|
|
112
|
888 ngx_mutex_lock(ngx_posted_events_mutex);
|
|
0
|
889
|
|
112
|
890 if (c->read->prev) {
|
|
|
891 ngx_delete_posted_event(c->read);
|
|
|
892 }
|
|
0
|
893
|
|
112
|
894 if (c->write->prev) {
|
|
|
895 ngx_delete_posted_event(c->write);
|
|
|
896 }
|
|
0
|
897
|
|
112
|
898 c->read->closed = 1;
|
|
|
899 c->write->closed = 1;
|
|
0
|
900
|
|
112
|
901 if (c->single_connection) {
|
|
|
902 ngx_unlock(&c->lock);
|
|
|
903 c->read->locked = 0;
|
|
|
904 c->write->locked = 0;
|
|
|
905 }
|
|
0
|
906
|
|
112
|
907 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
0
|
908
|
|
|
909 #else
|
|
|
910
|
|
|
911 if (c->read->prev) {
|
|
|
912 ngx_delete_posted_event(c->read);
|
|
|
913 }
|
|
|
914
|
|
|
915 if (c->write->prev) {
|
|
|
916 ngx_delete_posted_event(c->write);
|
|
|
917 }
|
|
|
918
|
|
|
919 c->read->closed = 1;
|
|
|
920 c->write->closed = 1;
|
|
|
921
|
|
|
922 #endif
|
|
|
923
|
|
618
|
924 ngx_reusable_connection(c, 0);
|
|
|
925
|
|
366
|
926 log_error = c->log_error;
|
|
|
927
|
|
92
|
928 ngx_free_connection(c);
|
|
|
929
|
|
0
|
930 fd = c->fd;
|
|
|
931 c->fd = (ngx_socket_t) -1;
|
|
|
932
|
|
|
933 if (ngx_close_socket(fd) == -1) {
|
|
|
934
|
|
366
|
935 err = ngx_socket_errno;
|
|
|
936
|
|
|
937 if (err == NGX_ECONNRESET || err == NGX_ENOTCONN) {
|
|
|
938
|
|
|
939 switch (log_error) {
|
|
|
940
|
|
|
941 case NGX_ERROR_INFO:
|
|
|
942 level = NGX_LOG_INFO;
|
|
|
943 break;
|
|
|
944
|
|
|
945 case NGX_ERROR_ERR:
|
|
|
946 level = NGX_LOG_ERR;
|
|
|
947 break;
|
|
|
948
|
|
|
949 default:
|
|
|
950 level = NGX_LOG_CRIT;
|
|
|
951 }
|
|
|
952
|
|
|
953 } else {
|
|
|
954 level = NGX_LOG_CRIT;
|
|
|
955 }
|
|
|
956
|
|
0
|
957 /* we use ngx_cycle->log because c->log was in c->pool */
|
|
|
958
|
|
366
|
959 ngx_log_error(level, ngx_cycle->log, err,
|
|
332
|
960 ngx_close_socket_n " %d failed", fd);
|
|
0
|
961 }
|
|
|
962 }
|
|
|
963
|
|
|
964
|
|
618
|
965 void
|
|
|
966 ngx_reusable_connection(ngx_connection_t *c, ngx_uint_t reusable)
|
|
|
967 {
|
|
|
968 ngx_log_debug1(NGX_LOG_DEBUG_CORE, c->log, 0,
|
|
|
969 "reusable connection: %ui", reusable);
|
|
|
970
|
|
|
971 if (c->reusable) {
|
|
|
972 ngx_queue_remove(&c->queue);
|
|
|
973 }
|
|
|
974
|
|
|
975 c->reusable = reusable;
|
|
|
976
|
|
|
977 if (reusable) {
|
|
|
978 /* need cast as ngx_cycle is volatile */
|
|
|
979
|
|
|
980 ngx_queue_insert_head(
|
|
|
981 (ngx_queue_t *) &ngx_cycle->reusable_connections_queue, &c->queue);
|
|
|
982 }
|
|
|
983 }
|
|
|
984
|
|
|
985
|
|
|
986 static void
|
|
|
987 ngx_drain_connections(void)
|
|
|
988 {
|
|
|
989 ngx_int_t i;
|
|
|
990 ngx_queue_t *q;
|
|
|
991 ngx_connection_t *c;
|
|
|
992
|
|
|
993 for (i = 0; i < 32; i++) {
|
|
|
994 if (ngx_queue_empty(&ngx_cycle->reusable_connections_queue)) {
|
|
|
995 break;
|
|
|
996 }
|
|
|
997
|
|
|
998 q = ngx_queue_last(&ngx_cycle->reusable_connections_queue);
|
|
|
999 c = ngx_queue_data(q, ngx_connection_t, queue);
|
|
|
1000
|
|
|
1001 ngx_log_debug0(NGX_LOG_DEBUG_CORE, c->log, 0,
|
|
|
1002 "reusing connection");
|
|
|
1003
|
|
|
1004 c->close = 1;
|
|
|
1005 c->read->handler(c->read);
|
|
|
1006 }
|
|
|
1007 }
|
|
|
1008
|
|
|
1009
|
|
70
|
1010 ngx_int_t
|
|
492
|
1011 ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s,
|
|
|
1012 ngx_uint_t port)
|
|
|
1013 {
|
|
|
1014 socklen_t len;
|
|
|
1015 ngx_uint_t addr;
|
|
|
1016 u_char sa[NGX_SOCKADDRLEN];
|
|
|
1017 struct sockaddr_in *sin;
|
|
|
1018 #if (NGX_HAVE_INET6)
|
|
|
1019 ngx_uint_t i;
|
|
|
1020 struct sockaddr_in6 *sin6;
|
|
|
1021 #endif
|
|
|
1022
|
|
|
1023 switch (c->local_sockaddr->sa_family) {
|
|
|
1024
|
|
|
1025 #if (NGX_HAVE_INET6)
|
|
|
1026 case AF_INET6:
|
|
|
1027 sin6 = (struct sockaddr_in6 *) c->local_sockaddr;
|
|
|
1028
|
|
|
1029 for (addr = 0, i = 0; addr == 0 && i < 16; i++) {
|
|
|
1030 addr |= sin6->sin6_addr.s6_addr[i];
|
|
|
1031 }
|
|
|
1032
|
|
|
1033 break;
|
|
|
1034 #endif
|
|
|
1035
|
|
|
1036 default: /* AF_INET */
|
|
|
1037 sin = (struct sockaddr_in *) c->local_sockaddr;
|
|
|
1038 addr = sin->sin_addr.s_addr;
|
|
|
1039 break;
|
|
|
1040 }
|
|
|
1041
|
|
|
1042 if (addr == 0) {
|
|
|
1043
|
|
|
1044 len = NGX_SOCKADDRLEN;
|
|
|
1045
|
|
|
1046 if (getsockname(c->fd, (struct sockaddr *) &sa, &len) == -1) {
|
|
|
1047 ngx_connection_error(c, ngx_socket_errno, "getsockname() failed");
|
|
|
1048 return NGX_ERROR;
|
|
|
1049 }
|
|
|
1050
|
|
|
1051 c->local_sockaddr = ngx_palloc(c->pool, len);
|
|
|
1052 if (c->local_sockaddr == NULL) {
|
|
|
1053 return NGX_ERROR;
|
|
|
1054 }
|
|
|
1055
|
|
|
1056 ngx_memcpy(c->local_sockaddr, &sa, len);
|
|
|
1057 }
|
|
|
1058
|
|
|
1059 if (s == NULL) {
|
|
|
1060 return NGX_OK;
|
|
|
1061 }
|
|
|
1062
|
|
|
1063 s->len = ngx_sock_ntop(c->local_sockaddr, s->data, s->len, port);
|
|
|
1064
|
|
|
1065 return NGX_OK;
|
|
|
1066 }
|
|
|
1067
|
|
|
1068
|
|
|
1069 ngx_int_t
|
|
70
|
1070 ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
|
|
0
|
1071 {
|
|
|
1072 ngx_uint_t level;
|
|
|
1073
|
|
484
|
1074 /* Winsock may return NGX_ECONNABORTED instead of NGX_ECONNRESET */
|
|
|
1075
|
|
|
1076 if ((err == NGX_ECONNRESET
|
|
|
1077 #if (NGX_WIN32)
|
|
|
1078 || err == NGX_ECONNABORTED
|
|
|
1079 #endif
|
|
|
1080 ) && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
|
|
|
1081 {
|
|
0
|
1082 return 0;
|
|
|
1083 }
|
|
|
1084
|
|
460
|
1085 #if (NGX_SOLARIS)
|
|
|
1086 if (err == NGX_EINVAL && c->log_error == NGX_ERROR_IGNORE_EINVAL) {
|
|
|
1087 return 0;
|
|
|
1088 }
|
|
|
1089 #endif
|
|
|
1090
|
|
86
|
1091 if (err == 0
|
|
|
1092 || err == NGX_ECONNRESET
|
|
484
|
1093 #if (NGX_WIN32)
|
|
|
1094 || err == NGX_ECONNABORTED
|
|
|
1095 #else
|
|
0
|
1096 || err == NGX_EPIPE
|
|
|
1097 #endif
|
|
|
1098 || err == NGX_ENOTCONN
|
|
136
|
1099 || err == NGX_ETIMEDOUT
|
|
0
|
1100 || err == NGX_ECONNREFUSED
|
|
364
|
1101 || err == NGX_ENETDOWN
|
|
|
1102 || err == NGX_ENETUNREACH
|
|
|
1103 || err == NGX_EHOSTDOWN
|
|
0
|
1104 || err == NGX_EHOSTUNREACH)
|
|
|
1105 {
|
|
|
1106 switch (c->log_error) {
|
|
|
1107
|
|
460
|
1108 case NGX_ERROR_IGNORE_EINVAL:
|
|
0
|
1109 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
1110 case NGX_ERROR_INFO:
|
|
|
1111 level = NGX_LOG_INFO;
|
|
|
1112 break;
|
|
|
1113
|
|
530
|
1114 default:
|
|
0
|
1115 level = NGX_LOG_ERR;
|
|
|
1116 }
|
|
|
1117
|
|
|
1118 } else {
|
|
366
|
1119 level = NGX_LOG_ALERT;
|
|
0
|
1120 }
|
|
|
1121
|
|
|
1122 ngx_log_error(level, c->log, err, text);
|
|
|
1123
|
|
|
1124 return NGX_ERROR;
|
|
|
1125 }
|
