06-24-2011
Yes! That's it. The problem was that there appeared SIGPIPE during second communicate() invocation. It was killing the program (SIGPIPE default action is to terminate process).
But there is still one strange thing. On the client side, during server breakdown, first send_request does not return any error, only the second one (I have checked, it get SIGPIPE, so I can handle it properly). Why? What is about this first execution that it does not fail? Neither send nor recv get SIGPIPE.
Last edited by Shang; 06-24-2011 at 12:31 PM..
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LEARN ABOUT CENTOS
socket.h
socket.h(3) Library Functions Manual socket.h(3)
NAME
socket.h -
Network addresses and sockets related classes.
SYNOPSIS
#include <cc++/address.h>
Classes
class ost::Socket
The Socket is used as the base for all Internet protocol services under Common C++.
class ost::DCCPSocket
DCCP sockets are used for stream based connected sessions between two sockets.
class ost::UDPSocket
UDP sockets implement the TCP SOCK_DGRAM UDP protocol.
class ost::UDPBroadcast
Representing a UDP socket used for subnet broadcasts, this class provides an alternate binding and setPeer() capability for UDP
sockets.
class ost::UDPTransmit
Representing half of a two-way UDP connection, the UDP transmitter can broadcast data to another selected peer host or to an entire
subnet.
class ost::UDPReceive
Representing half of a two-way UDP connection, the UDP receiver can receive data from another peer host or subnet.
class ost::UDPDuplex
UDP duplex connections impliment a bi-directional point-to-point UDP session between two peer hosts.
class ost::TCPSocket
TCP sockets are used for stream based connected sessions between two sockets.
class ost::TCPV6Socket
TCPV6 sockets are used for stream based connected sessions between two ipv6 sockets.
class ost::TCPStream
TCP streams are used to represent TCP client connections to a server by TCP protocol servers for accepting client connections.
class ost::TCPSession
The TCP session is used to primarily to represent a client connection that can be managed on a separate thread.
class ost::SimpleTCPStream
Simple TCP Stream, to be used with Common C++ Library.
Namespaces
namespace ost
Macros
#define INVALID_SOCKET -1
#define _IOLEN64
#define _IORET64
#define MSG_DONTWAIT 0
#define MSG_NOSIGNAL 0
#define SOCK_DCCP 6
#define IPPROTO_DCCP 33
#define SOL_DCCP 269
#define DCCP_SOCKOPT_AVAILABLE_CCIDS 12
#define DCCP_SOCKOPT_CCID 13
#define DCCP_SOCKOPT_TX_CCID 14
#define DCCP_SOCKOPT_RX_CCID 15
Typedefs
typedef int SOCKET
Variables
class __EXPORT ost::SimpleTCPStream
Detailed Description
Network addresses and sockets related classes.
Macro Definition Documentation
#define _IOLEN64
Referenced by ost::SocketPort::peek(), ost::UDPSocket::peek(), ost::TCPStream::peek(), ost::SocketPort::receive(),
ost::UDPReceive::receive(), ost::SocketPort::send(), ost::UDPTransmit::send(), and ost::UDPTransmit::transmit().
#define _IORET64
#define DCCP_SOCKOPT_AVAILABLE_CCIDS 12
#define DCCP_SOCKOPT_CCID 13
#define DCCP_SOCKOPT_RX_CCID 15
#define DCCP_SOCKOPT_TX_CCID 14
#define INVALID_SOCKET -1
#define IPPROTO_DCCP 33
#define MSG_DONTWAIT 0
Referenced by ost::UDPTransmit::transmit().
#define MSG_NOSIGNAL 0
Referenced by ost::UDPTransmit::send(), and ost::UDPTransmit::transmit().
#define SOCK_DCCP 6
#define SOL_DCCP 269
Typedef Documentation
typedef int SOCKET
Author
Generated automatically by Doxygen for GNU CommonC++ from the source code.
GNU CommonC++ Sat Jun 23 2012 socket.h(3)