| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| #include <ngx_event.h> |
| |
| |
| ngx_os_io_t ngx_io; |
| |
| |
| ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle) |
| { |
| ngx_int_t i; |
| ngx_listening_t *ls; |
| struct sockaddr_in *addr_in; |
| |
| ls = cycle->listening.elts; |
| for (i = 0; i < cycle->listening.nelts; i++) { |
| |
| /* AF_INET only */ |
| |
| ls[i].sockaddr = ngx_palloc(cycle->pool, sizeof(struct sockaddr_in)); |
| if (ls[i].sockaddr == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ls[i].socklen = sizeof(struct sockaddr_in); |
| if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) { |
| ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno, |
| "getsockname() of the inherited " |
| "socket #%d failed", ls[i].fd); |
| ls[i].ignore = 1; |
| continue; |
| } |
| |
| addr_in = (struct sockaddr_in *) ls[i].sockaddr; |
| |
| if (addr_in->sin_family != AF_INET) { |
| ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno, |
| "the inherited socket #%d has " |
| "unsupported family", ls[i].fd); |
| ls[i].ignore = 1; |
| continue; |
| } |
| ls[i].addr_text_max_len = INET_ADDRSTRLEN; |
| |
| ls[i].addr_text.data = ngx_palloc(cycle->pool, ls[i].addr_text_max_len); |
| if (ls[i].addr_text.data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ls[i].family = addr_in->sin_family; |
| ls[i].addr_text.len = ngx_sock_ntop(ls[i].family, ls[i].sockaddr, |
| ls[i].addr_text.data, |
| ls[i].addr_text_max_len); |
| if (ls[i].addr_text.len == 0) { |
| return NGX_ERROR; |
| } |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle) |
| { |
| ngx_int_t tries, failed, reuseaddr, i; |
| ngx_err_t err; |
| ngx_log_t *log; |
| ngx_socket_t s; |
| ngx_listening_t *ls; |
| |
| reuseaddr = 1; |
| #if (NGX_SUPPRESS_WARN) |
| failed = 0; |
| #endif |
| |
| log = cycle->log; |
| |
| /* TODO: tries configurable */ |
| |
| for (tries = 10; tries; tries--) { |
| failed = 0; |
| |
| /* for each listening socket */ |
| |
| ls = cycle->listening.elts; |
| for (i = 0; i < cycle->listening.nelts; i++) { |
| |
| if (ls[i].ignore) { |
| continue; |
| } |
| |
| if (ls[i].fd != -1) { |
| continue; |
| } |
| |
| if (ls[i].inherited) { |
| |
| /* TODO: close on exit */ |
| /* TODO: nonblocking */ |
| /* TODO: deferred accept */ |
| |
| continue; |
| } |
| |
| s = ngx_socket(ls[i].family, ls[i].type, ls[i].protocol, |
| ls[i].flags); |
| |
| if (s == -1) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno, |
| ngx_socket_n " %s failed", ls[i].addr_text.data); |
| return NGX_ERROR; |
| } |
| |
| #if (WIN32) |
| /* |
| * Winsock assignes a socket number divisible by 4 |
| * so to find a connection we divide a socket number by 4. |
| */ |
| |
| if (s % 4) { |
| ngx_log_error(NGX_LOG_EMERG, ls->log, 0, |
| ngx_socket_n " created socket %d", s); |
| return NGX_ERROR; |
| } |
| #endif |
| |
| if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, |
| (const void *) &reuseaddr, sizeof(int)) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno, |
| "setsockopt(SO_REUSEADDR) %s failed", |
| ls[i].addr_text.data); |
| return NGX_ERROR; |
| } |
| |
| /* TODO: close on exit */ |
| |
| if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) { |
| if (ngx_nonblocking(s) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno, |
| ngx_nonblocking_n " %s failed", |
| ls[i].addr_text.data); |
| return NGX_ERROR; |
| } |
| } |
| |
| #if 0 |
| if (ls[i].nonblocking) { |
| if (ngx_nonblocking(s) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno, |
| ngx_nonblocking_n " %s failed", |
| ls[i].addr_text.data); |
| return NGX_ERROR; |
| } |
| } |
| #endif |
| |
| if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) { |
| err = ngx_socket_errno; |
| ngx_log_error(NGX_LOG_EMERG, log, err, |
| "bind() to %s failed", ls[i].addr_text.data); |
| |
| if (err != NGX_EADDRINUSE) |
| return NGX_ERROR; |
| |
| if (ngx_close_socket(s) == -1) |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno, |
| ngx_close_socket_n " %s failed", |
| ls[i].addr_text.data); |
| |
| failed = 1; |
| continue; |
| } |
| |
| if (listen(s, ls[i].backlog) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno, |
| "listen() to %s failed", ls[i].addr_text.data); |
| return NGX_ERROR; |
| } |
| |
| /* TODO: deferred accept */ |
| |
| ls[i].fd = s; |
| } |
| |
| if (!failed) |
| break; |
| |
| /* TODO: delay configurable */ |
| |
| ngx_log_error(NGX_LOG_NOTICE, log, 0, |
| "try again to bind() after 500ms"); |
| ngx_msleep(500); |
| } |
| |
| if (failed) { |
| ngx_log_error(NGX_LOG_EMERG, log, 0, "still can not bind()"); |
| return NGX_ERROR; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| void ngx_close_listening_sockets(ngx_cycle_t *cycle) |
| { |
| ngx_int_t i; |
| ngx_socket_t fd; |
| ngx_listening_t *ls; |
| |
| if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
| return; |
| } |
| |
| ls = cycle->listening.elts; |
| for (i = 0; i < cycle->listening.nelts; i++) { |
| fd = ls[i].fd; |
| |
| #if (WIN32) |
| /* |
| * Winsock assignes a socket number divisible by 4 |
| * so to find a connection we divide a socket number by 4. |
| */ |
| |
| fd /= 4; |
| #endif |
| |
| ngx_del_event(&cycle->read_events[fd], NGX_READ_EVENT, NGX_CLOSE_EVENT); |
| |
| if (ngx_close_socket(ls[i].fd) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno, |
| ngx_close_socket_n " %s failed", |
| ls[i].addr_text.data); |
| } |
| |
| cycle->connections[fd].fd = -1; |
| } |
| } |
| |
| |
| ngx_int_t ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text) |
| { |
| ngx_int_t level; |
| |
| if (err == NGX_ECONNRESET |
| && c->read->log_error == NGX_ERROR_IGNORE_ECONNRESET) |
| { |
| return 0; |
| } |
| |
| if (err == NGX_ECONNRESET || err == NGX_EPIPE || err == NGX_ENOTCONN) { |
| |
| switch (c->read->log_error) { |
| |
| case NGX_ERROR_INFO: |
| level = NGX_LOG_INFO; |
| break; |
| |
| case NGX_ERROR_ERR: |
| level = NGX_LOG_ERR; |
| break; |
| |
| default: |
| level = NGX_LOG_CRIT; |
| } |
| |
| } else { |
| level = NGX_LOG_CRIT; |
| } |
| |
| ngx_log_error(level, c->log, err, text); |
| |
| return NGX_ERROR; |
| } |
