mirror of
https://git.tartarus.org/simon/putty.git
synced 2025-01-09 17:38:00 +00:00
20f433efac
No very good reason, but I've occasionally wanted to frob it to see if it makes any difference to problems I'm having, and it was easy. Tested that it does actually cause keepalives on Windows (with tcpdump); should also work on Unix. Not implemented on Mac (does nothing), but then neither is TCP_NODELAY. Quite a big checkin, much of which is adding `keepalive' alongside `nodelay' in network function calls. [originally from svn r4309]
172 lines
4.3 KiB
C
172 lines
4.3 KiB
C
/* $Id: testback.c,v 1.10 2004/06/20 17:07:32 jacob Exp $ */
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/*
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* Copyright (c) 1999 Simon Tatham
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* Copyright (c) 1999 Ben Harris
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/* PuTTY test backends */
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#include <stdio.h>
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#include <stdlib.h>
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#include "putty.h"
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static const char *null_init(void *, void **, Config *, char *, int, char **,
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int, int);
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static const char *loop_init(void *, void **, Config *, char *, int, char **,
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int, int);
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static void null_free(void *);
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static void loop_free(void *);
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static void null_reconfig(void *, Config *);
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static int null_send(void *, char *, int);
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static int loop_send(void *, char *, int);
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static int null_sendbuffer(void *);
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static void null_size(void *, int, int);
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static void null_special(void *, Telnet_Special);
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static const struct telnet_special *null_get_specials(void *handle);
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static Socket null_socket(void *);
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static int null_exitcode(void *);
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static int null_sendok(void *);
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static int null_ldisc(void *, int);
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static void null_provide_ldisc(void *, void *);
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static void null_provide_logctx(void *, void *);
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static void null_unthrottle(void *, int);
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Backend null_backend = {
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null_init, null_free, null_reconfig, null_send, null_sendbuffer, null_size,
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null_special, null_get_specials, null_socket, null_exitcode, null_sendok,
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null_ldisc, null_provide_ldisc, null_provide_logctx, null_unthrottle, 0
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};
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Backend loop_backend = {
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loop_init, loop_free, null_reconfig, loop_send, null_sendbuffer, null_size,
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null_special, null_get_specials, null_socket, null_exitcode, null_sendok,
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null_ldisc, null_provide_ldisc, null_provide_logctx, null_unthrottle, 0
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};
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struct loop_state {
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Terminal *term;
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};
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static const char *null_init(void *frontend_handle, void **backend_handle,
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Config *cfg, char *host, int port,
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char **realhost, int nodelay, int keepalive) {
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return NULL;
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}
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static const char *loop_init(void *frontend_handle, void **backend_handle,
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Config *cfg, char *host, int port,
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char **realhost, int nodelay, int keepalive) {
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struct loop_state *st = snew(struct loop_state);
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st->term = frontend_handle;
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*backend_handle = st;
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return NULL;
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}
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static void null_free(void *handle)
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{
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}
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static void loop_free(void *handle)
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{
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sfree(handle);
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}
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static void null_reconfig(void *handle, Config *cfg) {
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}
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static int null_send(void *handle, char *buf, int len) {
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return 0;
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}
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static int loop_send(void *handle, char *buf, int len) {
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struct loop_state *st = handle;
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return from_backend(st->term, 0, buf, len);
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}
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static int null_sendbuffer(void *handle) {
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return 0;
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}
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static void null_size(void *handle, int width, int height) {
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}
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static void null_special(void *handle, Telnet_Special code) {
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}
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static const struct telnet_special *null_get_specials (void *handle) {
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return NULL;
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}
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static Socket null_socket(void *handle) {
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return NULL;
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}
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static int null_exitcode(void *handle) {
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return 0;
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}
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static int null_sendok(void *handle) {
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return 1;
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}
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static void null_unthrottle(void *handle, int backlog) {
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}
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static int null_ldisc(void *handle, int option) {
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return 0;
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}
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static void null_provide_ldisc (void *handle, void *ldisc) {
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}
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static void null_provide_logctx(void *handle, void *logctx) {
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}
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/*
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* Emacs magic:
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* Local Variables:
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* c-file-style: "simon"
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* End:
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*/
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