WebSVN – HomeAutomation – Diff – /trunk/PcSoftware/Atom/Socket/asyncsocket.cpp

  *   You should have received a copy of the GNU 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.             *
  ***************************************************************************/
-#include <map>
-#include <vector>
 #include "asyncsocket.h"
-map<string, AsyncSocket*> AsyncSocket::mySockets;
-Mutex AsyncSocket::mySocketsMutex;
+int socketCount = 1;
 AsyncSocket::AsyncSocket()
+{
-    myId = itos(time(NULL)) + itos(mySockets.size());
-    mySockets[myId] = this;
+    myId = socketCount++;
-    cout << "DEBUG: Started " << myId << endl;
     mySocket = -1;
     myReconnectTimeout = 0;
     myForceReconnect = false;
     Thread<AsyncSocket>();
+}
 AsyncSocket::~AsyncSocket()
 {
-    mySemaphore.unlock();
     if (mySocket != -1)
+    {
         ::close(mySocket);
-        mySocket = -1;
+    }
-    mySockets.erase(myId);
     stop();
+}
 void AsyncSocket::run()
+{
     SyslogStream &slog = SyslogStream::getInstance();
     if (!isConnected())
     {
         if (myReconnectTimeout == 0)
+        {
             connect();
+        }
         else
+    }
     char buf[MAXBUFFER + 1];
     string data;
     int status;
-    int rc;
-    int timeSince = time(NULL) + 10;
+    bool loop = true;
     try
+    {
-        while (1)
+        while (loop)
+        {
-            AsyncSocket::mySemaphore.lock();
-            rc = mySemaphore.wait(10);
-            AsyncSocket::mySemaphore.unlock();
             if (myForceReconnect)
+            {
-                slog << "Disconnected from server.\n";
                 reconnectLoop();
-                timeSince = time(NULL) + 10;
-                continue;
             }
+            memset(buf, 0, MAXBUFFER + 1);
-            //cout << "Socket awoken...\n";
+            status = ::recv(mySocket, buf, MAXBUFFER, 0);
-            if (rc == ETIMEDOUT)
+            if (status == -1)
+            {
+                switch (errno)
+                {
+                    case EAGAIN:
-                /* Socket timed out, this means we have not received anything in some time
+                    throw new SocketException("The socket is marked non-blocking and the receive operation would block, or a receive timeout had been set and the timeout expired before data was received.");
+                    break;
+                    case EBADF:
-                and we should check the connection */
+                    throw new SocketException("The argument s is an invalid descriptor.");
-                setEvent(ASYNCSOCKET_EVENT_INACTIVITY);
-                timeSince = time(NULL);
+                    case ECONNREFUSED:
+                    throw new SocketException("A remote host refused to allow the network connection (typically because it is not running the requested service).");
-            }
-            else
+                    case EFAULT:
-            {
-                while (myOutQueue.size() > 0)
+                    throw new SocketException("The receive buffer pointer(s) point outside the process's address space.");
-                {
-                    data = myOutQueue.pop();
+                    case EINTR:
+                    throw new SocketException("The receive was interrupted by delivery of a signal before any data were available; see signal(7).");
-                    sendDataDirect(data);
+                    case EINVAL:
+                    throw new SocketException("Invalid argument passed.");
-                }
+                    break;
-                memset(buf, 0, MAXBUFFER + 1);
+                    case ENOMEM:
+                    throw new SocketException("Could not allocate memory for recvmsg().");
-                status = ::recv(mySocket, buf, MAXBUFFER, 0);
+                    case ENOTCONN:
+                    throw new SocketException("The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and  accept(2)).");
-                if (status == -1)
+                    case ENOTSOCK:
+                    throw new SocketException("The argument s does not refer to a socket.");
-                {
-                    switch (errno)
+                    case ECONNRESET:
+                    setEvent(ASYNCSOCKET_EVENT_RESET);
+                    if (myReconnectTimeout > 0)
+                    {
-                        case EAGAIN:
-                        //slog << "The socket is marked non-blocking and the receive operation would block, or a receive timeout had been set and the timeout expired before data was received.\n";
-                        break;
-                        case EBADF:
-                        throw new SocketException("The argument s is an invalid descriptor.");
-                        case ECONNREFUSED:
-                        throw new SocketException("A remote host refused to allow the network connection (typically because it is not running the requested service).");
-                        case EFAULT:
-                        throw new SocketException("The receive buffer pointer(s) point outside the process's address space.");
-                        case EINTR:
-                        throw new SocketException("The receive was interrupted by delivery of a signal before any data were available; see signal(7).");
-                        case EINVAL:
-                        //throw new SocketException("2Invalid argument passed.");
-                        slog << "Disconnected from server.\n";
                         reconnectLoop();
+                    }
+                    else
+                    {
-                        timeSince = time(NULL) + 10;
+                        loop = false;
+                    }
-                        break;
+                    break;
-                        case ENOMEM:
-                        throw new SocketException("Could not allocate memory for recvmsg().");
-                        case ENOTCONN:
-                        throw new SocketException("The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and  accept(2)).");
-                        case ENOTSOCK:
-                        throw new SocketException("The argument s does not refer to a socket.");
-                        default:
+                    default:
-                        slog << "Unknow exception: " + itos(errno) + "\n";
+                    throw new SocketException("Unknow exception: " + itos(errno));
-                        break;
+                    break;
-                    }
+                }
-                }
+            }
-                else if (status == 0)
+            else if (status == 0)
-                {
+            {
+                setEvent(ASYNCSOCKET_EVENT_CLOSED);
-                    slog << "Disconnected from server.\n";
+                if (myReconnectTimeout > 0)
+                {
                     reconnectLoop();
-                    timeSince = time(NULL);
-                }
-                else if (status > 0)
-                {
-                    timeSince = time(NULL) + 10;
-                    data = buf;
-                    //slog << "Receiving: " + data + "\n";
-                    myInQueue.push(data);
-                    setEvent(ASYNCSOCKET_EVENT_DATA);
+                }
+                else
-                if (timeSince + 10 < time(NULL))
+                {
-                    setEvent(ASYNCSOCKET_EVENT_INACTIVITY);
-                    timeSince = time(NULL);
+                    loop = false;
+                }
+            }
+            else if (status > 0)
+            {
+                data = buf;
+                //slog << "Received: " + data + "\n";
+                myInQueue.push(data);
+                setEvent(ASYNCSOCKET_EVENT_DATA);
+            }
         }
     }
     catch (SocketException *e)
+    {
         slog << "Exception: " + e->getDescription() + "\n";
-        //mySemaphore.unlock();
         setEvent(ASYNCSOCKET_EVENT_DIED);
-        stop();
+    }
     close();
-    //mySemaphore.unlock();
+}
 void AsyncSocket::reconnectLoop()
+{
-    if (myReconnectTimeout == 0)
-    {
-        close();
-        throw new SocketException("Connection is closed.");
-    }
     SyslogStream &slog = SyslogStream::getInstance();
     while (1)
+    {
         try
             connect();
             break;
+        }
         catch (SocketException *e)
+        {
+            setEvent(ASYNCSOCKET_EVENT_CONNECT_FAILED);
+            setEvent(ASYNCSOCKET_EVENT_WAITING_TO_RECONNECT);
-            slog << "Could not connect: " + e->getDescription() + "\n";
+            slog << "Could not connect: " + e->getDescription() + "\n";//FIXME: Remove these
             slog << "Will try again in " + itos(myReconnectTimeout) + " seconds\n";
             sleep(myReconnectTimeout);
         }
     }
 }
 void AsyncSocket::create()
+{
     close();
     mySocket = ::socket(AF_INET, SOCK_STREAM, 0);
     int on = 1;
     int status = setsockopt(mySocket, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on));
     if (status == -1)
     {
         close();
         throw new SocketException("Create:Reuseaddress: " + itos(errno));
+    }
+}
     create();
     myAddressStruct.sin_family = AF_INET;
     myAddressStruct.sin_addr.s_addr = INADDR_ANY;
     myAddressStruct.sin_port = htons(myPort);
     int status = ::bind(mySocket, (struct sockaddr *)&myAddressStruct, sizeof(myAddressStruct));
     if (status == -1)
+    {
         close();
             //case EACCES:
             //throw new SocketException("Search permission is denied on a component of the path prefix. (See also path_resolution(7).)");
             case EADDRNOTAVAIL:
             throw new SocketException("A nonexistent interface was requested or the requested address was not local.");
             case EFAULT:
             throw new SocketException("addr points outside the user's accessible address space.");
             //case EINVAL:
             //throw new SocketException("The addrlen is wrong, or the socket was not in the AF_UNIX family.");
             case ELOOP:
             throw new SocketException("Too many symbolic links were encountered in resolving addr.");
             case ENOTDIR:
             throw new SocketException("A component of the path prefix is not a directory.");
             case EROFS:
             throw new SocketException("The socket inode would reside on a read-only file system.");
             default:
             throw new SocketException("Unknow exception: " + itos(errno));
             break;
         }
     }
     status = ::listen(mySocket, MAXCONNECTIONS);
     if (status == -1)
+    {
         close();
         switch (errno)
+        }
+    }
+}
 bool AsyncSocket::accept(AsyncSocket* newSocket)
 {
     int addr_length = sizeof(myAddressStruct);
     int socket = ::accept(mySocket, (sockaddr*)&myAddressStruct, (socklen_t*)&addr_length);
     if (socket > 0)
+    {
 void AsyncSocket::connect()
+{
     SyslogStream &slog = SyslogStream::getInstance();
     create();
-    int on = 1;
-    ///FIXME: Verify that this works
-    int status = setsockopt(mySocket, SOL_SOCKET, SO_KEEPALIVE, (const char*)&on, sizeof(on));
-    if (status == -1)
-    {
-        close();
-        throw new SocketException("Connect:Keepalive: " + itos(errno));
-    }
-    ///FIXME: Verify that this works
-    status = setsockopt(mySocket, SOL_TCP, TCP_KEEPIDLE, (const char*)&on, sizeof(on));
-    if (status == -1)
-    {
-        close();
-        throw new SocketException("Connect:Keepidle: " + itos(errno));
-    }
     memset(&myAddressStruct, 0, sizeof(myAddressStruct));
     myAddressStruct.sin_family = AF_INET;
     myAddressStruct.sin_port = htons(myPort);
+    //slog << "Trying to resolv " + myAddress + "\n";
     struct hostent *hptr = gethostbyname(myAddress.c_str());
     if (hptr == NULL)
     {
         close();
         throw new SocketException("Connect: Could not resolv ip address");
     }
-    memcpy(&myAddressStruct.sin_addr, hptr->h_addr, hptr->h_length);
-    /*
-    status = inet_pton(AF_INET, myAddress.c_str(), &myAddressStruct.sin_addr);
-    if (status == -1)
-    {
-        if (errno == EAFNOSUPPORT)
-            throw new SocketException("Connect: EAFNOSUPPORT");
+    memcpy(&myAddressStruct.sin_addr, hptr->h_addr, hptr->h_length);
-    }
-    */
-    slog << "Trying to connect...\n";
-    status = ::connect(mySocket, (sockaddr*)&myAddressStruct, sizeof(myAddressStruct));
+    int status = ::connect(mySocket, (sockaddr*)&myAddressStruct, sizeof(myAddressStruct));
     if (status == -1)
+    {
         close();
         switch (errno)
+        {
             case EPERM:
             throw new SocketException("The user tried to connect to a broadcast address without having the socket broadcast  flag  enabled  or  the  connection request failed because of a local firewall rule.");
             case EADDRINUSE:
             throw new SocketException("Local address is already in use.");
             case EAFNOSUPPORT:
             throw new SocketException("The passed address didn't have the correct address family in its sa_family field.");
             case EAGAIN:
             throw new SocketException("No more free local ports or insufficient entries in the routing cache.  For AF_INET see the net.ipv4.ip_local_port_range sysctl in ip(7) on how to increase the number of local ports.");
             case EALREADY:
             throw new SocketException("The socket is non-blocking and a previous connection attempt has not yet been completed.");
             case EBADF:
             throw new SocketException("The file descriptor is not a valid index in the descriptor table.");
             case ECONNREFUSED:
             throw new SocketException("No-one listening on the remote address.");
             case EFAULT:
             throw new SocketException("The socket structure address is outside the user's address space.");
             case EINPROGRESS:
             throw new SocketException("The socket is non-blocking and the connection cannot be completed immediately.  It is possible to select(2)  or  poll(2) for  completion  by  selecting the socket for writing.  After select(2) indicates writability, use getsockopt(2) to read the SO_ERROR option at level SOL_SOCKET to determine whether connect() completed  successfully  (SO_ERROR  is  zero)  or unsuccessfully (SO_ERROR is one of the usual error codes listed here, explaining the reason for the failure).");
             case ENOTSOCK:
             throw new SocketException("The file descriptor is not associated with a socket.");
             case ETIMEDOUT:
             throw new SocketException("Timeout  while  attempting  connection.  The server may be too busy to accept new connections.  Note that for IP sockets the timeout may be very long when syncookies are enabled on the server.");
             default:
             throw new SocketException("Other errors may be generated by the underlying protocol modules. : " + itos(errno));
+        }
+    }
-    struct sigaction saio;
-    saio.sa_handler = AsyncSocket::signalHandler;
-    sigemptyset(&saio.sa_mask);
-    saio.sa_flags = 0;
-    saio.sa_restorer = NULL;
-    sigaction(SIGIO, &saio, NULL);
-    fcntl(mySocket, F_SETOWN, getpid());
-    int flags = fcntl(mySocket, F_GETFL);
-    if (flags < 0)
-    {
-        close();
-        throw new SocketException("Async socket fcntl failed");
-    }
-    fcntl(mySocket, F_SETFL, flags | O_NONBLOCK | FASYNC);
     myForceReconnect = false;
-    slog << "Connection established.\n";
+    setEvent(ASYNCSOCKET_EVENT_CONNECTED);
+}
 void AsyncSocket::close()
+{
     if (mySocket != -1)
+}
 void AsyncSocket::startEvent()
+{
     myEventSemaphore.lock();
+}
+bool AsyncSocket::availableEvent()
+{
+    return (myEventQueue.size() > 0);
+}
 int AsyncSocket::getEvent()
+{
-    int event = myEvent;
-    myEvent = ASYNCSOCKET_EVENT_NONE;
-    return event;
+    return myEventQueue.pop();
+}
 void AsyncSocket::waitForEvent()
+{
     myEventSemaphore.wait();
     return myInQueue.pop();
+}
 bool AsyncSocket::sendData(string data)
+{
+    //cout << "SendData on " + myAddress + ":" + itos(myPort) + ".\n";
+    sendDataDirect(data);
-    myOutQueue.push(data);
+    //myOutQueue.push(data);
-    mySemaphore.broadcast();
+    //mySemaphore.broadcast();
     return true;
+}
 void AsyncSocket::sendDataDirect(string data)
+{
     int status = ::send(mySocket, data.c_str(), data.size(), 0);
     //slog << "Status: " << status << "\n";
-    if (status == -1)
+    try
+    {
-        switch (errno)
+        if (status == -1)
+        {
+            switch (errno)
+            {
-            case EACCES:
+                case EACCES:
-            throw new SocketException("(For  Unix  domain sockets, which are identified by pathname) Write permission is denied on the destination socket file, or search permission is denied for one of the directories the path prefix.  (See path_resolution(7).)");
+                throw new SocketException("(For  Unix  domain sockets, which are identified by pathname) Write permission is denied on the destination socket file, or search permission is denied for one of the directories the path prefix.  (See path_resolution(7).)");
-            case EAGAIN:
+                case EAGAIN:
-            //slog << "The socket is marked non-blocking and the requested operation would block.\n";
+                //slog << "The socket is marked non-blocking and the requested operation would block.\n";
-            break;
+                break;
-            case EBADF:
+                case EBADF:
-            throw new SocketException("An invalid descriptor was specified.");
+                throw new SocketException("An invalid descriptor was specified.");
-            case ECONNRESET:
+                case ECONNRESET:
-            throw new SocketException("Connection reset by peer.");
+                throw new SocketException("Connection reset by peer.");
-            case EDESTADDRREQ:
+                case EDESTADDRREQ:
-            throw new SocketException("The socket is not connection-mode, and no peer address is set.");
+                throw new SocketException("The socket is not connection-mode, and no peer address is set.");
-            case EFAULT:
+                case EFAULT:
-            throw new SocketException("An invalid user space address was specified for an argument.");
+                throw new SocketException("An invalid user space address was specified for an argument.");
-            case EINTR:
+                case EINTR:
-            throw new SocketException("A signal occurred before any data was transmitted; see signal(7).");
+                throw new SocketException("A signal occurred before any data was transmitted; see signal(7).");
-            case EINVAL:
+                case EINVAL:
-            throw new SocketException("1Invalid argument passed.");
+                throw new SocketException("1Invalid argument passed.");
-            case EISCONN:
+                case EISCONN:
-            throw new SocketException("The connection-mode socket was connected already but a recipient was specified. (Now either this error is returned, or the recipient specification is ignored.)");
+                throw new SocketException("The connection-mode socket was connected already but a recipient was specified. (Now either this error is returned, or the recipient specification is ignored.)");
-            case EMSGSIZE:
+                case EMSGSIZE:
-            throw new SocketException("The socket type requires that message be sent atomically, and the size of the message to be sent made this impossible.");
+                throw new SocketException("The socket type requires that message be sent atomically, and the size of the message to be sent made this impossible.");
-            case ENOBUFS:
+                case ENOBUFS:
-            throw new SocketException("The output queue for a network interface was full.  This generally indicates that the interface has stopped sending, but may be caused by transient congestion.  (Normally, this does not occur in Linux.  Packets are just silently dropped when a device queue overflows.)");
+                throw new SocketException("The output queue for a network interface was full.  This generally indicates that the interface has stopped sending, but may be caused by transient congestion.  (Normally, this does not occur in Linux.  Packets are just silently dropped when a device queue overflows.)");
-            case ENOMEM:
+                case ENOMEM:
-            throw new SocketException("No memory available.");
+                throw new SocketException("No memory available.");
-            case ENOTCONN:
+                case ENOTCONN:
-            throw new SocketException("The socket is not connected, and no target has been given.");
+                throw new SocketException("The socket is not connected, and no target has been given.");
-            case ENOTSOCK:
+                case ENOTSOCK:
-            throw new SocketException("The argument s is not a socket.");
+                throw new SocketException("The argument s is not a socket.");
-            case EOPNOTSUPP:
+                case EOPNOTSUPP:
-            throw new SocketException("Some bit in the flags argument is inappropriate for the socket type.");
+                throw new SocketException("Some bit in the flags argument is inappropriate for the socket type.");
-            case EPIPE:
+                case EPIPE:
-            throw new SocketException("The  local end has been shut down on a connection oriented socket. In this case the process will also receive a SIGPIPE unless MSG_NOSIGNAL is set.");
+                throw new SocketException("The  local end has been shut down on a connection oriented socket. In this case the process will also receive a SIGPIPE unless MSG_NOSIGNAL is set.");
-            default:
+                default:
-            slog << "Unknow exception: " + itos(errno) + "\n";
+                slog << "Unknow exception: " + itos(errno) + "\n";
-            break;
+                break;
+            }
+        }
+    }
+    catch (SocketException *e)
+    {
+        slog << "sendDataDirect: Exception: " + e->getDescription() + "\n";
+    }
+}
 void AsyncSocket::setEvent(int event)
+{
-    myEventSemaphore.lock();
-    myEvent = event;
+    myEventQueue.push(event);
-    myEventSemaphore.unlock();
     myEventSemaphore.broadcast();
+}
 void AsyncSocket::forceReconnect()
+{
+    ///FIXME: Threadsafe?
     myForceReconnect = true;
-    mySemaphore.broadcast();
+}
-void AsyncSocket::signalHandler(int signum)
-{
-    //FIXME: We must know which socket is ready to read by using select...
-    cout << "DEBUG: signalHandler signum: " << signum << endl;
-    map<string, AsyncSocket*>::iterator iter;
-    mySocketsMutex.lock();
-    for (iter = mySockets.begin(); iter != mySockets.end(); iter++)///FIXME: We should check order and length
-    {
-        cout << "DEBUG: signalHandler: calling: " << iter->second->getId() << endl;
-        iter->second->mySemaphore.broadcast();
-    }
-    mySocketsMutex.unlock();
-}

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(root)/trunk/PcSoftware/Atom/Socket/asyncsocket.cpp @ 983 – Rev 981 → 983