Diff: TCPSocket.cpp

Revision:

3:e6474399e057

Parent:

2:b227d242f3c7

Child:

4:75988d748e4d

diff -r b227d242f3c7 -r e6474399e057 TCPSocket.cpp
--- a/TCPSocket.cpp	Mon Jul 23 11:52:50 2012 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,278 +0,0 @@
-/* Copyright (C) 2012 mbed.org, MIT License
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
- * and associated documentation files (the "Software"), to deal in the Software without restriction,
- * including without limitation the rights to use, copy, modify, merge, publish, distribute,
- * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all copies or
- * substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
- * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
- 
-#include "TCPSocket.h"
-
-#include <cstring>
-
-using std::memset;
-
-TCPSocket::TCPSocket() : m_sock(-1)
-{
-}
-
-TCPSocket::~TCPSocket()
-{
-  close(); //Don't want to leak 
-}
-
-int TCPSocket::connect(char* host, int port, int timeout)
-{
-  int ret = init();
-  if( ret < 0 ) 
-  {
-    return -1;
-  }
-
-  //Populate m_remoteHost
-  std::memset(&m_remoteHost, 0, sizeof(struct sockaddr_in));
-
-  //Resolve DNS address or populate hard-coded IP address
-  struct hostent *server = gethostbyname(host);
-  if(server == NULL)
-  {
-    return -1; //Could not resolve address
-  }
-  std::memcpy((char*)&m_remoteHost.sin_addr.s_addr, (char*)server->h_addr_list[0], server->h_length);
-
-  m_remoteHost.sin_family = AF_INET;
-  m_remoteHost.sin_port = htons(port);
-  
-  ret = ::connect(m_sock, (const struct sockaddr *)&m_remoteHost, sizeof(m_remoteHost));
-  if (ret < 0)
-  {
-    close();
-    return -1;
-  }
-  
-  return 0;
-}
-
-int TCPSocket::bind(int port)
-{
-  int ret = init();
-  if( ret < 0 ) 
-  {
-    return -1;
-  }
-  
-  struct sockaddr_in localHost;
-  std::memset(&localHost, 0, sizeof(localHost));
- 
-  localHost.sin_family = AF_INET;
-  localHost.sin_port = htons(port);
-  localHost.sin_addr.s_addr = INADDR_ANY;
-  
-  ret = ::bind(m_sock, (const struct sockaddr *)&localHost, sizeof(localHost));
-  if (ret < 0)
-  {
-    close();
-    return -1;
-  }
-
-  return 0;
-}
-
-int TCPSocket::listen(int max)
-{
-  if( m_sock < 0 )
-  {
-    return -1;
-  }
-  
-  int ret = ::listen(m_sock, max);
-  if (ret < 0)
-  {
-    close();
-    return -1;
-  }
-  
-  return 0;
-}
-
-int TCPSocket::accept(TCPSocket& socket, char** host, int* port, int timeout)
-{
-  if( m_sock < 0 )
-  {
-    return -1;
-  }
-
-  //Populate m_remoteHost
-  std::memset(&socket.m_remoteHost, 0, sizeof(struct sockaddr_in));
-
-  struct timeval t_val; //t_val will be decremented on each call to select()
-  t_val.tv_sec = timeout / 1000;
-  t_val.tv_usec = (timeout - (t_val.tv_sec * 1000)) * 1000;
-  //Wait for socket to get some connection request (i.e. to be "readable")
-  //Creating FS set
-  fd_set socksSet;
-  FD_ZERO(&socksSet);
-  FD_SET(m_sock, &socksSet);
-  int ret = ::select(FD_SETSIZE, &socksSet, NULL, NULL, &t_val);
-  if(ret <= 0 || !FD_ISSET(m_sock, &socksSet))
-  {
-    return -1; //Timeout
-  }
-  
-  socklen_t newSockRemoteHostLen = sizeof(socket.m_remoteHost);
-  
-  ret = ::accept(m_sock, (struct sockaddr*)&socket.m_remoteHost, &newSockRemoteHostLen);
-  if( ret < 0 )
-  {
-    return -1; //Accept failed
-  }
-  
-  socket.m_sock = ret; //ret is the new socket's fd
-  socket.m_closedByRemoteHost = false;
-  
-  static char hostBuf[16];
-  inet_ntoa_r(socket.m_remoteHost.sin_addr, hostBuf, sizeof(hostBuf));
-  
-  *host = hostBuf;
-  *port = ntohs(socket.m_remoteHost.sin_port);
-
-  return 0;
-}
-
-// -1 if unsuccessful, else number of bytes written
-int TCPSocket::send(char* data, int length, int timeout)
-{
-  if( m_sock < 0 )
-  {
-    return -1;
-  }
-  
-  if( m_closedByRemoteHost )
-  {
-    return 0;
-  }
-
-  size_t writtenLen = 0;
-  struct timeval t_val; //t_val will be decremented on each call to select()
-  t_val.tv_sec = timeout / 1000;
-  t_val.tv_usec = (timeout - (t_val.tv_sec * 1000)) * 1000;
-  while(writtenLen < length)
-  {
-    //Wait for socket to be writeable
-    //Creating FS set
-    fd_set socksSet;
-    FD_ZERO(&socksSet);
-    FD_SET(m_sock, &socksSet);
-
-    int ret = ::select(FD_SETSIZE, NULL, &socksSet, NULL, &t_val);
-    if(ret <= 0 || !FD_ISSET(m_sock, &socksSet))
-    {
-      return writtenLen; //Timeout -- FIXME should we return -1 or writtenLength ?
-    }
-
-    ret = ::send(m_sock, data + writtenLen, length - writtenLen, 0);
-    if( ret > 0)
-    {
-      writtenLen += ret;
-      continue;
-    }
-    else if( ret == 0 )
-    {
-      m_closedByRemoteHost = true;
-      return writtenLen; //Connection was closed by remote host -- FIXME how do we signal that the connection was closed ?
-    }
-    else
-    {
-      return -1; //Connnection error
-    }
-  }
-  
-  return writtenLen;
-}
-
-// -1 if unsuccessful, else number of bytes received
-int TCPSocket::receive(char* data, int length, int timeout)
-{
-  if( m_sock < 0 )
-  {
-    return -1;
-  }
-  
-  if( m_closedByRemoteHost )
-  {
-    return 0;
-  }
-  
-  size_t readLen = 0;
-  struct timeval t_val; //t_val will be decremented on each call to select()
-  t_val.tv_sec = timeout / 1000;
-  t_val.tv_usec = (timeout - (t_val.tv_sec * 1000)) * 1000;
-  while(readLen < length)
-  {
-    //Wait for socket to be readable
-    //Creating FS set
-    fd_set socksSet;
-    FD_ZERO(&socksSet);
-    FD_SET(m_sock, &socksSet);
-    int ret = ::select(FD_SETSIZE, &socksSet, NULL, NULL, &t_val);
-    if(ret <= 0 || !FD_ISSET(m_sock, &socksSet))
-    {
-      return readLen; //Timeout -- FIXME should we return -1 or writtenLength ?
-    }
-
-    ret = ::recv(m_sock, data + readLen, length - readLen, 0);
-    if( ret > 0)
-    {
-      readLen += ret;
-      continue;
-    }
-    else if( ret == 0 )
-    {
-      m_closedByRemoteHost = true;
-      return readLen; //Connection was closed by remote host -- FIXME how do we signal that the connection was closed ?
-    }
-    else
-    {
-      return -1; //Connnection error
-    }
-  }
-  return readLen;
-}
-
-int TCPSocket::close()
-{
-  if( m_sock < 0 )
-  {
-    return -1;
-  }
-
-  ::close(m_sock);
-  m_sock = -1;
-  
-  return 0;
-}
-
-int TCPSocket::init()
-{
-  if( m_sock != -1 )
-  {
-    return -1;
-  }
-  m_sock = ::socket(AF_INET, SOCK_STREAM, 0); //TCP socket
-  if (m_sock < 0)
-  {
-    return -1; //Could not create socket (Out of memory / available descriptors)
-  }
-  m_closedByRemoteHost = false;
-  return 0;
-}