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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10
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11
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12 ngx_os_io_t ngx_io;
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13
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14
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70
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15 ngx_listening_t *
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16 ngx_listening_inet_stream_socket(ngx_conf_t *cf, in_addr_t addr, in_port_t port)
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0
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17 {
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18 size_t len;
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19 ngx_listening_t *ls;
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28
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20 struct sockaddr_in *sin;
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0
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21
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50
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22 ls = ngx_array_push(&cf->cycle->listening);
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23 if (ls == NULL) {
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0
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24 return NULL;
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25 }
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26
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27 ngx_memzero(ls, sizeof(ngx_listening_t));
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28
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50
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29 sin = ngx_pcalloc(cf->pool, sizeof(struct sockaddr_in));
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30 if (sin == NULL) {
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0
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31 return NULL;
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32 }
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33
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28
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34 sin->sin_family = AF_INET;
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35 sin->sin_addr.s_addr = addr;
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36 sin->sin_port = htons(port);
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0
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37
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10
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38
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39 ls->addr_text.data = ngx_palloc(cf->pool,
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40 INET_ADDRSTRLEN - 1 + sizeof(":65535") - 1);
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41 if (ls->addr_text.data == NULL) {
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0
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42 return NULL;
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43 }
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44
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45 len = ngx_inet_ntop(AF_INET, &addr, ls->addr_text.data, INET_ADDRSTRLEN);
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10
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46
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47 ls->addr_text.len = ngx_sprintf(ls->addr_text.data + len, ":%d", port)
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48 - ls->addr_text.data;
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49
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0
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50 ls->fd = (ngx_socket_t) -1;
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51 ls->family = AF_INET;
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52 ls->type = SOCK_STREAM;
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28
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53 ls->sockaddr = (struct sockaddr *) sin;
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0
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54 ls->socklen = sizeof(struct sockaddr_in);
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55 ls->addr = offsetof(struct sockaddr_in, sin_addr);
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56 ls->addr_text_max_len = INET_ADDRSTRLEN;
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57
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58 return ls;
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59 }
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60
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61
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70
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62 ngx_int_t
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63 ngx_set_inherited_sockets(ngx_cycle_t *cycle)
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0
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64 {
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10
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65 size_t len;
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0
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66 ngx_uint_t i;
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67 ngx_listening_t *ls;
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28
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68 struct sockaddr_in *sin;
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0
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69
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70 ls = cycle->listening.elts;
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71 for (i = 0; i < cycle->listening.nelts; i++) {
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72
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73 /* AF_INET only */
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74
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75 ls[i].sockaddr = ngx_palloc(cycle->pool, sizeof(struct sockaddr_in));
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76 if (ls[i].sockaddr == NULL) {
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77 return NGX_ERROR;
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78 }
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79
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80 ls[i].socklen = sizeof(struct sockaddr_in);
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81 if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
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82 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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83 "getsockname() of the inherited "
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84 "socket #%d failed", ls[i].fd);
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85 ls[i].ignore = 1;
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86 continue;
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87 }
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88
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28
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89 sin = (struct sockaddr_in *) ls[i].sockaddr;
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0
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90
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28
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91 if (sin->sin_family != AF_INET) {
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0
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92 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
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93 "the inherited socket #%d has "
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94 "unsupported family", ls[i].fd);
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95 ls[i].ignore = 1;
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96 continue;
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97 }
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10
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98
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0
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99 ls[i].addr_text_max_len = INET_ADDRSTRLEN;
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100
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10
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101
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102 ls[i].addr_text.data = ngx_palloc(cycle->pool, INET_ADDRSTRLEN - 1
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103 + sizeof(":65535") - 1);
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0
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104 if (ls[i].addr_text.data == NULL) {
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105 return NGX_ERROR;
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106 }
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107
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28
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108 ls[i].family = sin->sin_family;
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10
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109 len = ngx_sock_ntop(ls[i].family, ls[i].sockaddr,
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110 ls[i].addr_text.data, INET_ADDRSTRLEN);
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111 if (len == 0) {
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0
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112 return NGX_ERROR;
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113 }
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10
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114
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115 ls[i].addr_text.len = ngx_sprintf(ls[i].addr_text.data + len, ":%d",
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28
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116 ntohs(sin->sin_port))
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10
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117 - ls[i].addr_text.data;
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0
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118 }
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119
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120 return NGX_OK;
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121 }
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122
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123
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70
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124 ngx_int_t
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125 ngx_open_listening_sockets(ngx_cycle_t *cycle)
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0
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126 {
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127 ngx_uint_t tries, failed, reuseaddr, i;
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128 ngx_err_t err;
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129 ngx_log_t *log;
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130 ngx_socket_t s;
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131 ngx_listening_t *ls;
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132
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133 reuseaddr = 1;
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134 #if (NGX_SUPPRESS_WARN)
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135 failed = 0;
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136 #endif
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137
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138 log = cycle->log;
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139
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140 /* TODO: tries configurable */
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141
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142 for (tries = /* STUB */ 5; tries; tries--) {
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143 failed = 0;
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144
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145 /* for each listening socket */
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146
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147 ls = cycle->listening.elts;
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148 for (i = 0; i < cycle->listening.nelts; i++) {
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149
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150 if (ls[i].ignore) {
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151 continue;
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152 }
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153
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154 if (ls[i].fd != -1) {
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155 continue;
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156 }
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157
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158 if (ls[i].inherited) {
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159
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160 /* TODO: close on exit */
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161 /* TODO: nonblocking */
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162 /* TODO: deferred accept */
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163
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164 continue;
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165 }
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166
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28
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167 s = ngx_socket(ls[i].family, ls[i].type, 0);
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0
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168
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169 if (s == -1) {
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170 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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171 ngx_socket_n " %V failed", &ls[i].addr_text);
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0
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172 return NGX_ERROR;
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173 }
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174
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10
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175 #if (NGX_WIN32)
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0
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176 /*
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177 * Winsock assignes a socket number divisible by 4
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178 * so to find a connection we divide a socket number by 4.
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179 */
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180
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181 if (s % 4) {
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182 ngx_log_error(NGX_LOG_EMERG, ls->log, 0,
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183 ngx_socket_n " created socket %d", s);
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184 return NGX_ERROR;
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185 }
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186 #endif
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187
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188 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
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189 (const void *) &reuseaddr, sizeof(int)) == -1) {
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190 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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191 "setsockopt(SO_REUSEADDR) %V failed",
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192 &ls[i].addr_text);
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0
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193 return NGX_ERROR;
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194 }
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195
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196 /* TODO: close on exit */
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197
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198 if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
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199 if (ngx_nonblocking(s) == -1) {
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200 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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201 ngx_nonblocking_n " %V failed",
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202 &ls[i].addr_text);
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0
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203 return NGX_ERROR;
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204 }
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205 }
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206
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207 #if 0
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208 if (ls[i].nonblocking) {
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209 if (ngx_nonblocking(s) == -1) {
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210 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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211 ngx_nonblocking_n " %V failed",
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212 &ls[i].addr_text);
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0
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213 return NGX_ERROR;
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214 }
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215 }
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216 #endif
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217
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218 if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
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219 err = ngx_socket_errno;
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220 ngx_log_error(NGX_LOG_EMERG, log, err,
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10
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221 "bind() to %V failed", &ls[i].addr_text);
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0
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222
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223 if (err != NGX_EADDRINUSE)
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224 return NGX_ERROR;
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225
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226 if (ngx_close_socket(s) == -1)
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227 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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228 ngx_close_socket_n " %V failed",
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229 &ls[i].addr_text);
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0
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230
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231 failed = 1;
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232 continue;
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233 }
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234
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235 if (listen(s, ls[i].backlog) == -1) {
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236 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
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10
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237 "listen() to %V failed", &ls[i].addr_text);
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0
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238 return NGX_ERROR;
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239 }
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240
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241 /* TODO: deferred accept */
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242
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243 ls[i].fd = s;
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244 }
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245
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246 if (!failed)
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247 break;
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248
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249 /* TODO: delay configurable */
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250
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251 ngx_log_error(NGX_LOG_NOTICE, log, 0,
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252 "try again to bind() after 500ms");
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253 ngx_msleep(500);
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254 }
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255
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256 if (failed) {
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26
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257 ngx_log_error(NGX_LOG_EMERG, log, 0, "still could not bind()");
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0
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258 return NGX_ERROR;
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259 }
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260
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261 return NGX_OK;
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262 }
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263
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264
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70
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265 void
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266 ngx_close_listening_sockets(ngx_cycle_t *cycle)
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0
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267 {
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268 ngx_uint_t i;
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269 ngx_socket_t fd;
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270 ngx_listening_t *ls;
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271
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272 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
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273 return;
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274 }
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275
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276 ngx_accept_mutex_held = 0;
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277 ngx_accept_mutex = NULL;
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278
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279 ls = cycle->listening.elts;
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280 for (i = 0; i < cycle->listening.nelts; i++) {
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281 fd = ls[i].fd;
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282
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10
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283 #if (NGX_WIN32)
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0
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284 /*
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285 * Winsock assignes a socket number divisible by 4
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286 * so to find a connection we divide a socket number by 4.
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287 */
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288
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289 fd /= 4;
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290 #endif
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291
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292 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
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293 if (cycle->connections[fd].read->active) {
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294 ngx_del_conn(&cycle->connections[fd], NGX_CLOSE_EVENT);
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295 }
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296
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297 } else {
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298 if (cycle->read_events[fd].active) {
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299 ngx_del_event(&cycle->read_events[fd],
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300 NGX_READ_EVENT, NGX_CLOSE_EVENT);
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301 }
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302 }
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303
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16
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304 if (ngx_close_socket(fd) == -1) {
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0
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305 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
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10
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306 ngx_close_socket_n " %V failed", &ls[i].addr_text);
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0
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307 }
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308
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309 cycle->connections[fd].fd = (ngx_socket_t) -1;
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310 }
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311 }
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312
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313
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70
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314 void
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315 ngx_close_connection(ngx_connection_t *c)
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0
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316 {
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317 ngx_socket_t fd;
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318
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28
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319 if (c->fd == -1) {
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0
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320 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
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321 return;
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322 }
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323
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324 if (c->read->timer_set) {
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325 ngx_del_timer(c->read);
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326 }
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327
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328 if (c->write->timer_set) {
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329 ngx_del_timer(c->write);
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330 }
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331
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332 if (ngx_del_conn) {
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333 ngx_del_conn(c, NGX_CLOSE_EVENT);
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334
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335 } else {
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336 if (c->read->active || c->read->disabled) {
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337 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
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338 }
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339
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340 if (c->write->active || c->write->disabled) {
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341 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
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342 }
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343 }
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344
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345 #if (NGX_THREADS)
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346
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347 /*
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348 * we have to clean the connection information before the closing
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349 * because another thread may reopen the same file descriptor
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350 * before we clean the connection
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351 */
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352
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353 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_OK) {
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354
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355 if (c->read->prev) {
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356 ngx_delete_posted_event(c->read);
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357 }
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358
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359 if (c->write->prev) {
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360 ngx_delete_posted_event(c->write);
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361 }
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362
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363 c->read->closed = 1;
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364 c->write->closed = 1;
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365
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366 if (c->single_connection) {
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367 ngx_unlock(&c->lock);
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368 c->read->locked = 0;
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369 c->write->locked = 0;
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370 }
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371
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372 ngx_mutex_unlock(ngx_posted_events_mutex);
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373 }
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374
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375 #else
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376
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377 if (c->read->prev) {
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378 ngx_delete_posted_event(c->read);
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379 }
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380
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381 if (c->write->prev) {
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382 ngx_delete_posted_event(c->write);
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383 }
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384
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385 c->read->closed = 1;
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386 c->write->closed = 1;
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387
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388 #endif
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389
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390 fd = c->fd;
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391 c->fd = (ngx_socket_t) -1;
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392 c->data = NULL;
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393
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394 if (ngx_close_socket(fd) == -1) {
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395
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396 /* we use ngx_cycle->log because c->log was in c->pool */
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397
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398 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, ngx_socket_errno,
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399 ngx_close_socket_n " failed");
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400 }
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401 }
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402
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403
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70
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404 ngx_int_t
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405 ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
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0
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406 {
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407 ngx_uint_t level;
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408
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409 if (err == NGX_ECONNRESET
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410 && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
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411 {
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412 return 0;
|
|
|
413 }
|
|
|
414
|
|
|
415 if (err == NGX_ECONNRESET
|
|
10
|
416 #if !(NGX_WIN32)
|
|
0
|
417 || err == NGX_EPIPE
|
|
|
418 #endif
|
|
|
419 || err == NGX_ENOTCONN
|
|
|
420 || err == NGX_ECONNREFUSED
|
|
|
421 || err == NGX_EHOSTUNREACH)
|
|
|
422 {
|
|
|
423
|
|
|
424 switch (c->log_error) {
|
|
|
425
|
|
|
426 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
427 case NGX_ERROR_INFO:
|
|
|
428 level = NGX_LOG_INFO;
|
|
|
429 break;
|
|
|
430
|
|
|
431 case NGX_ERROR_ERR:
|
|
|
432 level = NGX_LOG_ERR;
|
|
|
433 break;
|
|
|
434
|
|
|
435 default:
|
|
|
436 level = NGX_LOG_CRIT;
|
|
|
437 }
|
|
|
438
|
|
|
439 } else {
|
|
|
440 level = NGX_LOG_CRIT;
|
|
|
441 }
|
|
|
442
|
|
|
443 ngx_log_error(level, c->log, err, text);
|
|
|
444
|
|
|
445 return NGX_ERROR;
|
|
|
446 }
|
