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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 #ifndef _NGX_CONNECTION_H_INCLUDED_
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8 #define _NGX_CONNECTION_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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92
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15 typedef struct ngx_listening_s ngx_listening_t;
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16
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17 struct ngx_listening_s {
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18 ngx_socket_t fd;
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19
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92
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20 struct sockaddr *sockaddr;
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21 socklen_t socklen; /* size of sockaddr */
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22 size_t addr; /* offset to address in sockaddr */
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23 size_t addr_text_max_len;
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24 ngx_str_t addr_text;
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0
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25
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92
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26 int family;
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27 int type;
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112
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28
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92
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29 int backlog;
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112
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30 int rcvbuf;
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31 int sndbuf;
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32
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92
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33 /* handler of accepted connection */
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96
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34 ngx_connection_handler_pt handler;
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92
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35
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36 void *ctx; /* ngx_http_conf_ctx_t, for example */
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37 void *servers; /* array of ngx_http_in_addr_t, for example */
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38
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92
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39 ngx_log_t log;
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40
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92
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41 size_t pool_size;
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42 /* should be here because of the AcceptEx() preread */
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43 size_t post_accept_buffer_size;
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44 /* should be here because of the deferred accept */
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106
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45 ngx_msec_t post_accept_timeout;
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92
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46
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47 ngx_listening_t *previous;
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48 ngx_connection_t *connection;
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49
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92
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50 unsigned open:1;
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51 unsigned remain:1;
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52 unsigned ignore:1;
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53
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92
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54 unsigned bound:1; /* already bound */
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55 unsigned inherited:1; /* inherited from previous process */
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56 unsigned nonblocking_accept:1;
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112
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57 unsigned listen:1;
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92
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58 unsigned nonblocking:1;
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59 unsigned shared:1; /* shared between threads or processes */
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60 unsigned addr_ntop:1;
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72
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61
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18
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62 #if (NGX_HAVE_DEFERRED_ACCEPT)
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92
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63 unsigned deferred_accept:1;
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64 unsigned delete_deferred:1;
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65 unsigned add_deferred:1;
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72
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66 #ifdef SO_ACCEPTFILTER
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67 char *accept_filter;
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72
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68 #endif
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69 #endif
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70
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71 };
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72
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73
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74 typedef enum {
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75 NGX_ERROR_CRIT = 0,
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76 NGX_ERROR_ERR,
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77 NGX_ERROR_INFO,
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78 NGX_ERROR_IGNORE_ECONNRESET
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79 } ngx_connection_log_error_e;
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80
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81
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82 typedef enum {
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32
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83 NGX_TCP_NODELAY_UNSET = 0,
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84 NGX_TCP_NODELAY_SET,
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85 NGX_TCP_NODELAY_DISABLED
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86 } ngx_connection_tcp_nodelay_e;
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87
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88
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89 typedef enum {
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90 NGX_TCP_NOPUSH_UNSET = 0,
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91 NGX_TCP_NOPUSH_SET,
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92 NGX_TCP_NOPUSH_DISABLED
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93 } ngx_connection_tcp_nopush_e;
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94
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95
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96 struct ngx_connection_s {
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97 void *data;
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98 ngx_event_t *read;
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99 ngx_event_t *write;
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100
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101 ngx_socket_t fd;
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102
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103 ngx_recv_pt recv;
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104 ngx_send_pt send;
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105 ngx_recv_chain_pt recv_chain;
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106 ngx_send_chain_pt send_chain;
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107
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108 ngx_listening_t *listening;
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109
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110 off_t sent;
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111
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112 void *ctx;
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113 void *servers;
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114
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115
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116 ngx_log_t *log;
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117
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118 ngx_pool_t *pool;
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119
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120 struct sockaddr *sockaddr;
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121 socklen_t socklen;
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122 ngx_str_t addr_text;
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123
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126
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124 #if (NGX_SSL)
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96
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125 ngx_ssl_connection_t *ssl;
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126 #endif
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127
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18
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128 #if (NGX_HAVE_IOCP)
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129 struct sockaddr *local_sockaddr;
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130 socklen_t local_socklen;
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131 #endif
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132
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133 ngx_buf_t *buffer;
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134
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44
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135 ngx_atomic_uint_t number;
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136
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32
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137 unsigned log_error:2; /* ngx_connection_log_error_e */
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138
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139 unsigned buffered:1;
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140 unsigned single_connection:1;
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141 unsigned unexpected_eof:1;
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142 unsigned timedout:1;
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76
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143 unsigned closed:1;
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2
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144
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145 unsigned sendfile:1;
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146 unsigned sndlowat:1;
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32
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147 unsigned tcp_nodelay:2; /* ngx_connection_tcp_nodelay_e */
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148 unsigned tcp_nopush:2; /* ngx_connection_tcp_nopush_e */
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2
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149
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18
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150 #if (NGX_HAVE_IOCP)
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151 unsigned accept_context_updated:1;
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152 #endif
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153
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154 #if (NGX_THREADS)
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155 ngx_atomic_t lock;
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156 #endif
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157 };
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158
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159
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160 #ifndef ngx_ssl_set_nosendshut
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161 #define ngx_ssl_set_nosendshut(ssl)
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162 #endif
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163
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164
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165 ngx_listening_t *ngx_listening_inet_stream_socket(ngx_conf_t *cf,
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70
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166 in_addr_t addr, in_port_t port);
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167 ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle);
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168 ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle);
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112
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169 void ngx_configure_listening_socket(ngx_cycle_t *cycle);
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170 void ngx_close_listening_sockets(ngx_cycle_t *cycle);
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171 void ngx_close_connection(ngx_connection_t *c);
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172 ngx_int_t ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text);
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173
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92
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174 ngx_connection_t *ngx_get_connection(ngx_socket_t s, ngx_log_t *log);
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175 void ngx_free_connection(ngx_connection_t *c);
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176
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177
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178 #endif /* _NGX_CONNECTION_H_INCLUDED_ */
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