//
// ********************************************************************
// * DISCLAIMER                                                       *
// *                                                                  *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in:                      *
// *   http://cern.ch/geant4/license                                  *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.                                                             *
// *                                                                  *
// * This  code  implementation is the  intellectual property  of the *
// * GEANT4 collaboration.                                            *
// * By copying,  distributing  or modifying the Program (or any work *
// * based  on  the Program)  you indicate  your  acceptance of  this *
// * statement, and all its terms.                                    *
// ********************************************************************
//
//
// $Id: FRClient.cc,v 1.6 2002/06/23 03:31:50 stanaka Exp $
// GEANT4 tag $Name: geant4-07-00-cand-01 $
//
// FRClient.cc
// FukuiRenderer Client
// Yasuhide Sawada & Satoshi Tanaka


//=================//
#ifndef WIN32
//=================//


//=================//
#ifdef G4VIS_BUILD_VRML_DRIVER
//=================//


#include "G4ios.hh"
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <fcntl.h>

#include <unistd.h>
#include <string.h>
#include <stdio.h>

#include "FRClient.h"

FRClient::FRClient()
{
	fd = -1;
	create();
}

FRClient::~FRClient()
{
	close();
}

int FRClient::create()
{
	/* stream socket */
	fd = socket(AF_INET, SOCK_STREAM, 0);
	if (fd < 0)
		fputs("error: socket.\n", stderr);
	return fd;
}



int FRClient::connect(const char *hostname, int port_)
{
	// local variables
	struct sockaddr_in sa;
	struct hostent *hp;

	// set port ( sa.sin_family,  sa.sin_port )
	port = port_;  // Store port number to data member
	memset( (char *)&sa, '\0', sizeof(sa)) ;
	sa.sin_family = AF_INET;
	sa.sin_port = htons(port);

	// set server host ( sa.sin_addr )
	if (hostname == NULL) {
		hostname = "localhost"; 
			// reset arg 
	}
	hp = gethostbyname(hostname) ;
	if ( !hp ) {
		G4cerr << "ERROR: gethostbyname() failed" << G4endl;
		return -1; 
	}

	memcpy( (char * )&sa.sin_addr, (char * )hp->h_addr, hp->h_length );

	// make connection to server
	if (::connect(fd, (struct sockaddr *)&sa, sizeof(sa)) == -1) {
		fputs("error: connect\n", stderr);
		return -1;
	}

	// return file descripter (data member)
	return fd;
}



int FRClient::send(const char *sendbuf)
{
	int len = strlen(sendbuf);

	if (::send(fd, sendbuf, len, 0) < 0) {
		fputs("error: Send()\n", stderr);
		len = -1;
	}
	return len;
}

int FRClient::receive(char *recvbuf)
{
	int len;

	memset(recvbuf, '\0', FRSendLength + 1);
	len = ::recv(fd, recvbuf, FRSendLength, 0);
	if(len < 0) {
		fputs("error: Receive()\n", stderr);
		len = -1;
	}
	return len;
}

int FRClient::close()
{
	/*
		shutdown :argument '2' means shutdown both send and receive.
	*/
	if (::shutdown(fd, 2) < 0) {
		fputs("error: shutdown\n", stderr);
		return -1;
	}
	::close(fd);
	return 0;
}

#endif //G4VIS_BUILD_VRML_DRIVER

#endif // WIN32