Mercurial > hg > nginx
view src/event/ngx_event_connect.c @ 7003:7943298d4ac0
Contrib: proper syntax parsing in vim syntax highlighting.
Instead of highlighting directives in arbitrary positions, proper
parsing of nginx.conf syntax was implemented, matching what nginx does
internally. This allows vim to correctly highlight various complex cases,
including:
return 301 http://example.com/path#fragment";
and also avoids highlighting of parameters as directives, as in
server_name missing.semicolon.example.com
index index.php;
where "index" is not a directive but a parameter of the "server_name"
directive due to missing semicolon.
Most important downside of this approach seems to be that there is no
easy way to introduce directive-specific parameters. As such, only "listen"
directive parameters were preserved.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 22 May 2017 16:34:47 +0300 |
parents | 56fc55e32f23 |
children | 8b70d4caa505 |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #include <ngx_event_connect.h> #if (NGX_HAVE_TRANSPARENT_PROXY) static ngx_int_t ngx_event_connect_set_transparent(ngx_peer_connection_t *pc, ngx_socket_t s); #endif ngx_int_t ngx_event_connect_peer(ngx_peer_connection_t *pc) { int rc, type; #if (NGX_HAVE_IP_BIND_ADDRESS_NO_PORT || NGX_LINUX) in_port_t port; #endif ngx_int_t event; ngx_err_t err; ngx_uint_t level; ngx_socket_t s; ngx_event_t *rev, *wev; ngx_connection_t *c; rc = pc->get(pc, pc->data); if (rc != NGX_OK) { return rc; } type = (pc->type ? pc->type : SOCK_STREAM); s = ngx_socket(pc->sockaddr->sa_family, type, 0); ngx_log_debug2(NGX_LOG_DEBUG_EVENT, pc->log, 0, "%s socket %d", (type == SOCK_STREAM) ? "stream" : "dgram", s); if (s == (ngx_socket_t) -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, ngx_socket_n " failed"); return NGX_ERROR; } c = ngx_get_connection(s, pc->log); if (c == NULL) { if (ngx_close_socket(s) == -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, ngx_close_socket_n "failed"); } return NGX_ERROR; } c->type = type; if (pc->rcvbuf) { if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, (const void *) &pc->rcvbuf, sizeof(int)) == -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, "setsockopt(SO_RCVBUF) failed"); goto failed; } } if (ngx_nonblocking(s) == -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, ngx_nonblocking_n " failed"); goto failed; } if (pc->local) { #if (NGX_HAVE_TRANSPARENT_PROXY) if (pc->transparent) { if (ngx_event_connect_set_transparent(pc, s) != NGX_OK) { goto failed; } } #endif #if (NGX_HAVE_IP_BIND_ADDRESS_NO_PORT || NGX_LINUX) port = ngx_inet_get_port(pc->local->sockaddr); #endif #if (NGX_HAVE_IP_BIND_ADDRESS_NO_PORT) if (pc->sockaddr->sa_family != AF_UNIX && port == 0) { static int bind_address_no_port = 1; if (bind_address_no_port) { if (setsockopt(s, IPPROTO_IP, IP_BIND_ADDRESS_NO_PORT, (const void *) &bind_address_no_port, sizeof(int)) == -1) { err = ngx_socket_errno; if (err != NGX_EOPNOTSUPP && err != NGX_ENOPROTOOPT) { ngx_log_error(NGX_LOG_ALERT, pc->log, err, "setsockopt(IP_BIND_ADDRESS_NO_PORT) " "failed, ignored"); } else { bind_address_no_port = 0; } } } } #endif #if (NGX_LINUX) if (pc->type == SOCK_DGRAM && port != 0) { int reuse_addr = 1; if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (const void *) &reuse_addr, sizeof(int)) == -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, "setsockopt(SO_REUSEADDR) failed"); goto failed; } } #endif if (bind(s, pc->local->sockaddr, pc->local->socklen) == -1) { ngx_log_error(NGX_LOG_CRIT, pc->log, ngx_socket_errno, "bind(%V) failed", &pc->local->name); goto failed; } } if (type == SOCK_STREAM) { c->recv = ngx_recv; c->send = ngx_send; c->recv_chain = ngx_recv_chain; c->send_chain = ngx_send_chain; c->sendfile = 1; if (pc->sockaddr->sa_family == AF_UNIX) { c->tcp_nopush = NGX_TCP_NOPUSH_DISABLED; c->tcp_nodelay = NGX_TCP_NODELAY_DISABLED; #if (NGX_SOLARIS) /* Solaris's sendfilev() supports AF_NCA, AF_INET, and AF_INET6 */ c->sendfile = 0; #endif } } else { /* type == SOCK_DGRAM */ c->recv = ngx_udp_recv; c->send = ngx_send; c->send_chain = ngx_udp_send_chain; } c->log_error = pc->log_error; rev = c->read; wev = c->write; rev->log = pc->log; wev->log = pc->log; pc->connection = c; c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); if (ngx_add_conn) { if (ngx_add_conn(c) == NGX_ERROR) { goto failed; } } ngx_log_debug3(NGX_LOG_DEBUG_EVENT, pc->log, 0, "connect to %V, fd:%d #%uA", pc->name, s, c->number); rc = connect(s, pc->sockaddr, pc->socklen); if (rc == -1) { err = ngx_socket_errno; if (err != NGX_EINPROGRESS #if (NGX_WIN32) /* Winsock returns WSAEWOULDBLOCK (NGX_EAGAIN) */ && err != NGX_EAGAIN #endif ) { if (err == NGX_ECONNREFUSED #if (NGX_LINUX) /* * Linux returns EAGAIN instead of ECONNREFUSED * for unix sockets if listen queue is full */ || err == NGX_EAGAIN #endif || err == NGX_ECONNRESET || err == NGX_ENETDOWN || err == NGX_ENETUNREACH || err == NGX_EHOSTDOWN || err == NGX_EHOSTUNREACH) { level = NGX_LOG_ERR; } else { level = NGX_LOG_CRIT; } ngx_log_error(level, c->log, err, "connect() to %V failed", pc->name); ngx_close_connection(c); pc->connection = NULL; return NGX_DECLINED; } } if (ngx_add_conn) { if (rc == -1) { /* NGX_EINPROGRESS */ return NGX_AGAIN; } ngx_log_debug0(NGX_LOG_DEBUG_EVENT, pc->log, 0, "connected"); wev->ready = 1; return NGX_OK; } if (ngx_event_flags & NGX_USE_IOCP_EVENT) { ngx_log_debug1(NGX_LOG_DEBUG_EVENT, pc->log, ngx_socket_errno, "connect(): %d", rc); if (ngx_blocking(s) == -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, ngx_blocking_n " failed"); goto failed; } /* * FreeBSD's aio allows to post an operation on non-connected socket. * NT does not support it. * * TODO: check in Win32, etc. As workaround we can use NGX_ONESHOT_EVENT */ rev->ready = 1; wev->ready = 1; return NGX_OK; } if (ngx_event_flags & NGX_USE_CLEAR_EVENT) { /* kqueue */ event = NGX_CLEAR_EVENT; } else { /* select, poll, /dev/poll */ event = NGX_LEVEL_EVENT; } if (ngx_add_event(rev, NGX_READ_EVENT, event) != NGX_OK) { goto failed; } if (rc == -1) { /* NGX_EINPROGRESS */ if (ngx_add_event(wev, NGX_WRITE_EVENT, event) != NGX_OK) { goto failed; } return NGX_AGAIN; } ngx_log_debug0(NGX_LOG_DEBUG_EVENT, pc->log, 0, "connected"); wev->ready = 1; return NGX_OK; failed: ngx_close_connection(c); pc->connection = NULL; return NGX_ERROR; } #if (NGX_HAVE_TRANSPARENT_PROXY) static ngx_int_t ngx_event_connect_set_transparent(ngx_peer_connection_t *pc, ngx_socket_t s) { int value; value = 1; #if defined(SO_BINDANY) if (setsockopt(s, SOL_SOCKET, SO_BINDANY, (const void *) &value, sizeof(int)) == -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, "setsockopt(SO_BINDANY) failed"); return NGX_ERROR; } #else switch (pc->local->sockaddr->sa_family) { case AF_INET: #if defined(IP_TRANSPARENT) if (setsockopt(s, IPPROTO_IP, IP_TRANSPARENT, (const void *) &value, sizeof(int)) == -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, "setsockopt(IP_TRANSPARENT) failed"); return NGX_ERROR; } #elif defined(IP_BINDANY) if (setsockopt(s, IPPROTO_IP, IP_BINDANY, (const void *) &value, sizeof(int)) == -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, "setsockopt(IP_BINDANY) failed"); return NGX_ERROR; } #endif break; #if (NGX_HAVE_INET6) case AF_INET6: #if defined(IPV6_TRANSPARENT) if (setsockopt(s, IPPROTO_IPV6, IPV6_TRANSPARENT, (const void *) &value, sizeof(int)) == -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, "setsockopt(IPV6_TRANSPARENT) failed"); return NGX_ERROR; } #elif defined(IPV6_BINDANY) if (setsockopt(s, IPPROTO_IPV6, IPV6_BINDANY, (const void *) &value, sizeof(int)) == -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, "setsockopt(IPV6_BINDANY) failed"); return NGX_ERROR; } #endif break; #endif /* NGX_HAVE_INET6 */ } #endif /* SO_BINDANY */ return NGX_OK; } #endif ngx_int_t ngx_event_get_peer(ngx_peer_connection_t *pc, void *data) { return NGX_OK; }