f3460460e9
libstrophe uses non-blocking sockets and the connect() syscall may return before a TCP connection is established. This doesn't allow to catch all possible errors synchronously and some of the errors are handled in the event handler. In a scenario with multiple SRV records and/or multiple IP addresses resolution, we need to repeat connection attempt on a failure. xmpp_sock_t resolves the above problem. It keeps resolved records and addresses to repeat connect attempt asynchronously.
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/* sock.h
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** strophe XMPP client library -- socket abstraction header
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**
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** Copyright (C) 2005-2009 Collecta, Inc.
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**
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** This software is provided AS-IS with no warranty, either express
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** or implied.
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**
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** This program is dual licensed under the MIT and GPLv3 licenses.
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*/
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/** @file
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* Socket abstraction API.
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*/
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#ifndef __LIBSTROPHE_SOCK_H__
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#define __LIBSTROPHE_SOCK_H__
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#include <stdio.h>
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#ifndef _WIN32
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typedef int sock_t;
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#define INVALID_SOCKET (-1)
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#else
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#include <iphlpapi.h>
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#include <mstcpip.h> /* tcp_keepalive */
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typedef SOCKET sock_t;
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#endif
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typedef struct _xmpp_sock_t xmpp_sock_t;
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void sock_initialize(void);
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void sock_shutdown(void);
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int sock_error(void);
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xmpp_sock_t *sock_new(xmpp_conn_t *conn,
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const char *domain,
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const char *host,
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unsigned short port);
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void sock_free(xmpp_sock_t *xsock);
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sock_t sock_connect(xmpp_sock_t *xsock);
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int sock_close(sock_t sock);
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int sock_set_blocking(sock_t sock);
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int sock_set_nonblocking(sock_t sock);
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int sock_read(sock_t sock, void *buff, size_t len);
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int sock_write(sock_t sock, const void *buff, size_t len);
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int sock_is_recoverable(int error);
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/* checks for an error after connect, return 0 if connect successful */
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int sock_connect_error(sock_t sock);
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int sock_set_keepalive(sock_t sock,
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int timeout,
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int interval,
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int count,
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unsigned int user_timeout);
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#endif /* __LIBSTROPHE_SOCK_H__ */
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