source: Sophya/trunk/AddOn/TAcq/swrapsock.cc@ 3593

#ifdef OSF1 
#define _XOPEN_SOURCE 500
#endif
#include "swrapsock.h"
#include "sopnamsp.h"

#include <time.h>

#include <arpa/inet.h>
#include <netdb.h>
#include <sys/errno.h>
#include <unistd.h>

#include <iostream>

/*! 
  \class SOPHYA::Socket
  \ingroup SysTools
  \brief Base class for server and client sockets.
  
  The class Socket is not intended for direct use. Only the derived classes 
  ServerSocket and ClientSocket should be used.
*/

/* --Methode-- */
Socket::Socket(int s)
{
  skt = s;
  tstart = tlast = (long)time(NULL);
  totsnd = totrcv = 0;
  dts = dtr = 0;
  nbbs = nbbr = 0;
  lstnbb = 0; lstdt = 0;
  errcnt = 0;
}

/* --Methode-- */
/*  ---  A faire plus tard ...
Socket::Socket(Socket const & a)
{
  skt = a.skt;
  tstart = a.tstart; tlast = a.tlast; 
  totsnd = a.totsnd; totrcv = a.totrcv;
  dts = a.dts; dtr = a.dtr;
  nbbs = a.nbbs; nbbr = a.nbbr;
  lstnbb = a.lstnbb;   lstdt = a.lstdt;
  errcnt = a.errcnt;
}
*/

/* --Methode-- */
Socket::~Socket()
{
  Close();
}

/* --Methode-- */
size_t Socket::Send(const char * buff, size_t len, int flag)
{
  ssize_t rc;
  rc = send(skt, buff, len, flag);
  if (rc > 0)  { 
    // tlast = (long)time(NULL);
    totsnd += rc; 
    return(rc);
  }
  else return 0;
}

/* --Methode-- */
size_t Socket::Receive(char * buff, size_t len, int flag)
{
  ssize_t rc;
  //  int fromlen = 0;
  bool encore = true;
  while (encore) {
    rc = recv(skt, buff, len, flag);
    //    rc = recvfrom(skt, buff, len, flag, NULL, &fromlen);
    if ((rc < 1) && (errno == EAGAIN))  usleep(20000);
    else encore = false;
  }
  if (rc > 0)  { 
    // tlast = (long)time(NULL);
    totrcv += rc; 
    return(rc);
  }
  else return 0;
}

// extern int errno;

/* --Methode-- */
int Socket::Close()
{
  if (skt<0) return 0;
  int rc=-1;
  rc = shutdown(skt, SHUT_RDWR);
  if(rc < 0) 
    cout << "Socket::Close() Erreur: Pb shutdown() ErrNo="
         << errno << endl;

  rc = close(skt);
  if(rc < 0) 
    cout << "Socket::Close() Erreur: Pb close() ErrNo="
         << errno << endl;
  skt = -1;
  return(0);
}


/*! 
  \class SOPHYA::ServerSocket
  \ingroup SysTools
  \brief Socket wrapper class for the server side
*/

/* --Methode-- */
ServerSocket::ServerSocket(int port, int nconmax)
  : Socket() 
{
  int s,rc;
  s = socket(AF_INET, SOCK_STREAM, 0);
  if (s < 0) { 
    cout << "ServerSocket() Pb socket() ErrNo=" <<  errno << endl;  
    throw SocketException("ServerSocket() Pb socket()");
    }
  skt = s;
  if (nconmax <= 1)  nconmax = 1;
  NConMax = nconmax;
  nclitot = 0;

  portid = port; 
  ipskt.sin_family = AF_INET;
  ipskt.sin_port = htons(port);
  ipskt.sin_addr.s_addr = INADDR_ANY;
  /* Je fais un cast explicit de sockaddr_in * (Internet) en sockaddr *   */
  rc = bind(skt, (struct sockaddr *)(&ipskt), sizeof(ipskt));
  if (rc < 0) {
    Close();
    cout << "ServerSocket() Pb bind() ErrNo=" <<  errno << endl;  
    throw SocketException("ServerSocket() Pb bind()");
  }
}

/* --Methode-- */
Socket ServerSocket::WaitClientConnection()
{
  int rc,s,len;
  struct sockaddr_in cli;

  rc = listen(skt, NConMax);
  if (rc < 0) {
    cout << "ServerSocket::WaitClientConnection() Pb listen() ErrNo="
         << errno << endl;  
    throw SocketException("ServerSocket::WaitClientConnection() Pb listen()");
  }
  
  /* Je fais un cast explicit de sockaddr_in * (Internet) en sockaddr *   */
  socklen_t sl = sizeof(cli);
  s = accept(skt, (struct sockaddr *)(&cli), &sl);
  if(s < 0) {
    cout << "ServerSocket::WaitClientConnection() Pb accpet() ErrNo="
         << errno << endl;  
    throw SocketException("ServerSocket::WaitClientConnection() Pb accept()");
  }
  nclitot++;

  return Socket(s); 
}


/*! 
  \class SOPHYA::ClientSocket
  \ingroup SysTools
  \brief Socket wrapper class for the client side
*/

/* --Methode-- */
ClientSocket::ClientSocket(string const& srvname, int port)
  : Socket()
{
  InitConnection(srvname.c_str(), port);
}

/* --Methode-- */
ClientSocket::ClientSocket(const char* srvname, int port)
  : Socket()
{
  InitConnection(srvname, port);
}

/* --Methode-- */
void ClientSocket::InitConnection(const char* name, int port)
{
  struct hostent *server;
  int s,rc;
#if defined(Linux)  || defined(linux)
  typedef unsigned long in_addr_t;
#endif
  in_addr_t inad;
  
  server = NULL;
  /*  Try to find out if this is a known machine name  */
  server = gethostbyname(name);   
  if(!server) {   
    /*  Try it as an internet address  a.b.c.d  */  
    /*    inad = inet_addr(name);
          if(inad == INADDR_NONE) {
          cout << "ClientSocket() Host identification failed inet_addr(" 
          << name << ")" << endl;
          throw SocketException("ClientSocket() Host identification failed ");
          }
    */
    server = gethostbyaddr(name, strlen(name), AF_INET);
  }
  if(!server) {
    cout << "ClientSocket() Host identification failed (2) for" 
         << name << endl;
    throw SocketException("ClientSocket() Host identification failed (2)");
  }

  ipskt.sin_family = AF_INET;
  ipskt.sin_port = htons(port);
  memcpy(&(ipskt.sin_addr), server->h_addr, server->h_length);
  s = socket(AF_INET, SOCK_STREAM, 0);
  if (s < 0) {
    cout << "ClientSocket() Erreur: Pb socket() ErrNo=" << errno << endl;  
    throw SocketException("ClientSocket() Erreur: Pb socket()");
  }


  skt = s;
  portid = port; 
/* Je fais un cast explicit de sockaddr_in * (Internet) en sockaddr *   */
  rc = connect(skt, (struct sockaddr *)(&ipskt), sizeof(struct sockaddr_in));
  if (rc < 0) {
    cout << "ClientSocket() Erreur: Pb connect() ErrNo=" << errno << endl; 
    Close();
    throw SocketException("ClientSocket() Erreur: Pb connect()");
  }
}