-/***************************************************************************
- * Copyright (C) 2006 by Gerd v. Egidy *
- * gve@intra2net.com *
- * *
- * This library is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU Lesser General Public License version *
- * 2.1 as published by the Free Software Foundation. *
- * *
- * This library is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU Lesser General Public License for more details. *
- * *
- * You should have received a copy of the GNU Lesser General Public *
- * License along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
+/*
+Copyright (C) 2006 by Intra2net AG - Gerd v. Egidy
+
+The software in this package is distributed under the GNU General
+Public License version 2 (with a special exception described below).
+
+A copy of GNU General Public License (GPL) is included in this distribution,
+in the file COPYING.GPL.
+
+As a special exception, if other files instantiate templates or use macros
+or inline functions from this file, or you compile this file and link it
+with other works to produce a work based on this file, this file
+does not by itself cause the resulting work to be covered
+by the GNU General Public License.
+
+However the source code for this file must still be made available
+in accordance with section (3) of the GNU General Public License.
+
+This exception does not invalidate any other reasons why a work based
+on this file might be covered by the GNU General Public License.
+*/
#include <stdio.h>
#include <errno.h>
#include "socket_client.hxx"
#include "t2n_exception.hxx"
+#include "log.hxx"
using namespace std;
namespace libt2n
{
+/// returns a closed connection if connection could not be established, call get_last_error_msg() for details
socket_client_connection::socket_client_connection(int _port, const std::string& _server,
- long long _connect_timeout_usec, int _max_retries)
+ long long _connect_timeout_usec, int _max_retries,
+ std::ostream *_logstream, log_level_values _log_level)
: client_connection(), socket_handler(0,tcp_s)
{
max_retries=_max_retries;
server=_server;
port=_port;
- tcp_connect(max_retries);
+ set_logging(_logstream,_log_level);
+
+ try
+ {
+ tcp_connect(max_retries);
+ }
+ catch (t2n_communication_error &e)
+ {
+ lastErrorMsg=e.what();
+ LOGSTREAM(debug,"tcp connect error: " << lastErrorMsg);
+ // FIXME: Don't call virtual function in constructor. Currently not dangerous but bad design.
+ close();
+ }
+
+ if (!connection::is_closed())
+ do_callbacks(new_connection);
}
+/// returns a closed connection if connection could not be established, call get_last_error_msg() for details
socket_client_connection::socket_client_connection(const std::string& _path,
- long long _connect_timeout_usec, int _max_retries)
+ long long _connect_timeout_usec, int _max_retries,
+ std::ostream *_logstream, log_level_values _log_level)
: client_connection(), socket_handler(0,unix_s)
{
max_retries=_max_retries;
path=_path;
- unix_connect(max_retries);
+ set_logging(_logstream,_log_level);
+
+ try
+ {
+ unix_connect(max_retries);
+ }
+ catch (t2n_communication_error &e)
+ {
+ lastErrorMsg=e.what();
+ LOGSTREAM(debug,"unix connect error: " << lastErrorMsg);
+ // FIXME: Don't call virtual function in constructor. Currently not dangerous
+ close();
+ }
+
+ if (!connection::is_closed())
+ do_callbacks(new_connection);
}
+/**
+ * Destructor. Closes an open connection.
+ */
+socket_client_connection::~socket_client_connection()
+{
+ // Destructor of socket_handler will close the socket!
+}
+
+
+/// establish a connection via tcp
void socket_client_connection::tcp_connect(int max_retries)
{
struct sockaddr_in sock_addr;
{
// recurse if retries left
if (max_retries > 0)
+ {
+ LOGSTREAM(debug,"retrying connect after connect error");
tcp_connect(max_retries-1);
+ }
+ else
+ throw t2n_connect_error("no more retries left after connect error");
}
-
- do_callbacks(new_connection);
}
+/// establish a connection via unix-socket
void socket_client_connection::unix_connect(int max_retries)
{
struct sockaddr_un unix_addr;
{
// recurse if retries left
if (max_retries > 0)
- tcp_connect(max_retries-1);
+ {
+ LOGSTREAM(debug,"retrying connect after connect error");
+ unix_connect(max_retries-1);
+ }
+ else
+ throw t2n_connect_error("no more retries left after connect error");
}
-
- do_callbacks(new_connection);
}
+/// execute a connect on a prepared socket (tcp or unix) respecting timeouts
void socket_client_connection::connect_with_timeout(struct sockaddr *sock_addr,unsigned int sockaddr_size)
{
set_socket_options(sock);
+ /* non-blocking mode */
+ int flflags;
+ flflags=fcntl(sock,F_GETFL,0);
+ if (flflags < 0)
+ EXCEPTIONSTREAM(error,t2n_communication_error,"fcntl error on socket: " << strerror(errno));
+
+ flflags &= (O_NONBLOCK ^ 0xFFFF);
+ if (fcntl(sock,F_SETFL,flflags) < 0)
+ EXCEPTIONSTREAM(error,t2n_communication_error,"fcntl error on socket: " << strerror(errno));
+
+
+ LOGSTREAM(debug,"connect_with_timeout()");
int ret=::connect(sock,sock_addr, sockaddr_size);
if (ret < 0)
{
if (errno==EINPROGRESS)
{
+ LOGSTREAM(debug,"connect_with_timeout(): EINPROGRESS");
+
/* set timeout */
struct timeval tval;
struct timeval *timeout_ptr;
else
throw t2n_connect_error(string("connect() error: ")+strerror(errno));
}
+
+ LOGSTREAM(debug,"connect_with_timeout(): success");
}
void socket_client_connection::close()
}
}
+/** @brief try to reconnect the current connection with the same connection credentials (host and port or path)
+
+ @note will throw an exeption if reconnecting not possible
+*/
+void socket_client_connection::reconnect()
+{
+ LOGSTREAM(debug,"reconnect()");
+
+ // close the current connection if still open
+ close();
+
+ socket_type_value type=get_type();
+
+ if (type == tcp_s)
+ tcp_connect(max_retries);
+ else if (type == unix_s)
+ unix_connect(max_retries);
+
+ // connection is open now, otherwise an execption would have been thrown
+ reopen();
+
+ LOGSTREAM(debug,"reconnect() done, client_connection::is_closed() now " << client_connection::is_closed());
+}
+
}
git://developer.intra2net.com / libt2n / blobdiff