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fa7e10251d
srv_state has been removed from HTTP state machines, and states
have been split in either TCP states or analyzers. For instance,
the TARPIT state has just become a simple analyzer.
New flags have been added to the struct buffer to compensate this.
The high-level stream processors sometimes need to force a disconnection
without touching a file-descriptor (eg: report an error). But if
they touched BF_SHUTW or BF_SHUTR, the file descriptor would not
be closed. Thus, the two SHUT?_NOW flags have been added so that
an application can request a forced close which the stream interface
will be forced to obey.
During this change, a new BF_HIJACK flag was added. It will
be used for data generation, eg during a stats dump. It
prevents the producer on a buffer from sending data into it.
BF_SHUTR_NOW /* the producer must shut down for reads ASAP */
BF_SHUTW_NOW /* the consumer must shut down for writes ASAP */
BF_HIJACK /* the producer is temporarily replaced */
BF_SHUTW_NOW has precedence over BF_HIJACK. BF_HIJACK has
precedence over BF_MAY_FORWARD (so that it does not need it).
New functions buffer_shutr_now(), buffer_shutw_now(), buffer_abort()
are provided to manipulate BF_SHUT* flags.
A new type "stream_interface" has been added to describe both
sides of a buffer. A stream interface has states and error
reporting. The session now has two stream interfaces (one per
side). Each buffer has stream_interface pointers to both
consumer and producer sides.
The server-side file descriptor has moved to its stream interface,
so that even the buffer has access to it.
process_srv() has been split into three parts :
- tcp_get_connection() obtains a connection to the server
- tcp_connection_failed() tests if a previously attempted
connection has succeeded or not.
- process_srv_data() only manages the data phase, and in
this sense should be roughly equivalent to process_cli.
Little code has been removed, and a lot of old code has been
left in comments for now.
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/*
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include/proto/stream_sock.h
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This file contains client-side definitions.
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Copyright (C) 2000-2008 Willy Tarreau - w@1wt.eu
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation, version 2.1
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exclusively.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PROTO_STREAM_SOCK_H
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#define _PROTO_STREAM_SOCK_H
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#include <stdlib.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <common/config.h>
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#include <types/stream_interface.h>
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/* main event functions used to move data between sockets and buffers */
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int stream_sock_read(int fd);
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int stream_sock_write(int fd);
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/* This either returns the sockname or the original destination address. Code
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* inspired from Patrick Schaaf's example of nf_getsockname() implementation.
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*/
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static inline int get_original_dst(int fd, struct sockaddr_in *sa, socklen_t *salen) {
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#if defined(TPROXY) && defined(SO_ORIGINAL_DST)
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return getsockopt(fd, SOL_IP, SO_ORIGINAL_DST, (void *)sa, salen);
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#else
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#if defined(TPROXY) && defined(USE_GETSOCKNAME)
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return getsockname(fd, (struct sockaddr *)sa, salen);
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#else
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return -1;
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#endif
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#endif
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}
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#endif /* _PROTO_STREAM_SOCK_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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