Mercurial > hg > nginx-quic
view src/event/ngx_event_connect.c @ 8582:0dcec8e5d50a
HTTP/2: reworked body reading to better match HTTP/1.x code.
In particular, now the code always uses a buffer limited by
client_body_buffer_size. At the cost of an additional copy it
ensures that small DATA frames are not directly mapped to small
write() syscalls, but rather buffered in memory before writing.
Further, requests without Content-Length are no longer forced
to use temporary files.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Sun, 29 Aug 2021 22:20:36 +0300 |
parents | fdc3d40979b0 |
children | 32b0ba4855a6 |
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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, value; #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 (pc->so_keepalive) { value = 1; if (setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (const void *) &value, sizeof(int)) == -1) { ngx_log_error(NGX_LOG_ALERT, pc->log, ngx_socket_errno, "setsockopt(SO_KEEPALIVE) failed, ignored"); } } 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); c->start_time = ngx_current_msec; 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; } #else ngx_log_error(NGX_LOG_ALERT, pc->log, 0, "could not enable transparent proxying for IPv6 " "on this platform"); 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; }