#if defined(HAVE_CONFIG_H)#include "resip/stack/config.hxx"#endif#include <list>#include <errno.h>#include <sstream>#ifndef WIN32#include <unistd.h>#include <sys/types.h>#include <sys/fcntl.h>#endif#include "rutil/Socket.hxx"#include "rutil/Logger.hxx"#include "resip/stack/SipStack.hxx"#include "resip/stack/Uri.hxx"#include "resip/stack/TuIM.hxx"#include "resip/stack/Security.hxx"#include "resip/stack/ShutdownMessage.hxx"//#include "resip/stack/ApiCheckList.hxx"#include "contrib/getopt/getopt.h"// GAG headers#include "GagMessage.hxx"#include "GagConduit.hxx"using namespace resip;using namespace std;#define RESIPROCATE_SUBSYSTEM Subsystem::TESTvoid shutdown (SipStack *stack){  if (!stack) return;  // Wait for all transactions to complete  bool done = false;  stack->shutdown();  while (!done)  {      FdSet fdset;       stack->buildFdSet(fdset);      fdset.selectMilliSeconds(1000);       stack->process(fdset);      Message* msg = stack->receiveAny();       if (msg)       {        DebugLog(<<"SHUTDOWN ATE: " << msg->brief() );      }      else      {        DebugLog(<<"SHUTDOWN Waiting");      }      done = dynamic_cast<ShutdownMessage*>(msg) != 0;  }  return;  }void init_loopback(){  Socket s;  int status;  struct sockaddr_in them;  DebugLog (<<"Using loopback (127.0.0.1:48879) for communications");  memset((void *)&them, 0, sizeof(them));  them.sin_family = AF_INET;  them.sin_port = 0xBEEF;#ifdef WIN32  them.sin_addr.s_addr = htonl(0x100007f);#else  inet_aton("127.0.0.1", &(them.sin_addr));#endif  s = socket(PF_INET, SOCK_STREAM, 0);  assert(s > 0);  status = connect(s, (struct sockaddr *)&them, sizeof(them));  if (status < 0)  {    ErrLog( << "Could not connect to loopback interface. Exiting.");    exit (-1);  }  // Hijack stdin and stdout    close (0);  close (1);  status = dup2( static_cast<int>(s), 0);  assert(status >= 0);  status = dup2( static_cast<int>(s), 1);  assert(status >= 0);}intmain (int argc, char **argv){  int c;  bool useLoopback = false;  bool getoptError = false;  // Defaults (override with commandline options)#ifdef WIN32  int tcpPort = 6000;  int udpPort = 6000;  int tlsTcpPort = 6001;#else  int tcpPort = 6000 + getuid() * 2;  int udpPort = 6000 + getuid() * 2;  int tlsTcpPort = 6001 + getuid() * 2;  pid_t parent = getppid();#endif  bool tlsServer = false;  Log::initialize(Log::File, Log::Debug, argv[0]);  // Read commandline options  while	((c = getopt(argc, argv, "l")) != -1)  {    switch (c) {      case 'l':        useLoopback = true;      case '?':        getoptError = true;    }  }  if (useLoopback)  {    init_loopback();  }  if (getoptError)  {    InfoLog ( << "Invalid command line option provided");  }#ifdef USE_SSL  // Get the SIP stack up and running  Security security (tlsServer, true);  SipStack sipStack (false, &security);#else  SipStack sipStack (false);#endif  sipStack.addTransport(UDP, udpPort );  sipStack.addTransport(TCP, tcpPort );/*  sipStack.addTransport(UDP, udpPort+2,V6 );  sipStack.addTransport(TCP, tcpPort+2,V6 );*/#ifdef USE_SSL  sipStack.addTlsTransport(tlsTcpPort);#endif  GagConduit conduit(sipStack, udpPort);  // Say hello to GAIM (eventually, we should  // make certain things work, and base the  // value of "ok" on this).  GagHelloMessage(true).serialize(cout);  // Main processing loop  int time;  int err;#if 0  // candidate for deletion#ifndef WIN32  // Make stdin nonblocking  fcntl(0, F_SETFL, O_NONBLOCK);#else    unsigned long noBlock = 1;	int errNoBlock = ioctlsocket( 0, FIONBIO , &noBlock );	assert( errNoBlock == 0 );#endif#endif  while (1)  {    FdSet fdset;    sipStack.buildFdSet(fdset);    time = sipStack.getTimeTillNextProcessMS();    fdset.setRead(fileno(stdin));    err = fdset.selectMilliSeconds(time);    if (err < 0)    {      // send error message to GAIM      Data error;      error = "Error in select(): [";      error += errno;      error += "] ";      error += strerror(errno);      GagErrorMessage(error).serialize(cout);    }#ifndef WIN32    /* !ah! not portable to windows -- works for now. */    {       pid_t current_parent = getppid();      if (current_parent != parent)      {        ErrLog(<<"Unsupervised child found [" << current_parent << "] while looking for ["  		                            << parent << "] -- crying, exiting.");        shutdown(&sipStack);        exit(-1);      }    }#endif    if (fdset.readyToRead(fileno(stdin)))    {      DebugLog ( << "stdin is ready to read" );      GagMessage *message = GagMessage::getMessage(fileno(stdin));      if (message)      {        conduit.handleMessage(message);        delete message;      }      else      {        Data error("Panic! Something is horribly wrong!");        DebugLog ( << "Received unexpected series of bytes from Gaim" );        GagErrorMessage(error).serialize(cout);        conduit.removeAllUsers();        shutdown(&sipStack);        exit(-1);      }      if (!conduit.isRunning())      {        shutdown(&sipStack);        exit (0);      }      sipStack.process(fdset);      conduit.process();    }    else    {      sipStack.process(fdset);      conduit.process();    }  }}