tcp_socket.cpp
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00001 /*
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00004  * Copyright (c) 2011, Southwest Research Institute
00005  * All rights reserved.
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00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions are met:
00009  *
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00012  *      * Redistributions in binary form must reproduce the above copyright
00013  *      notice, this list of conditions and the following disclaimer in the
00014  *      documentation and/or other materials provided with the distribution.
00015  *      * Neither the name of the Southwest Research Institute, nor the names
00016  *      of its contributors may be used to endorse or promote products derived
00017  *      from this software without specific prior written permission.
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00019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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00031 
00032 #ifndef FLATHEADERS
00033 #include "simple_message/socket/tcp_socket.h"
00034 #include "simple_message/log_wrapper.h"
00035 #include "simple_message/simple_message.h"
00036 #include "simple_message/shared_types.h"
00037 #else
00038 #include "tcp_socket.h"
00039 #include "log_wrapper.h"
00040 #include "simple_message.h"
00041 #include "shared_types.h"
00042 #endif
00043 
00044 using namespace industrial::smpl_msg_connection;
00045 using namespace industrial::byte_array;
00046 using namespace industrial::simple_message;
00047 using namespace industrial::shared_types;
00048 
00049 namespace industrial
00050 {
00051 namespace tcp_socket
00052 {
00053 
00054 TcpSocket::TcpSocket()
00055 {
00056 }
00057 
00058 TcpSocket::~TcpSocket()
00059 // Closes socket
00060 {
00061   LOG_DEBUG("Destructing TCPSocket");
00062   CLOSE(this->getSockHandle());
00063 }
00064 
00065 int TcpSocket::rawSendBytes(char *buffer, shared_int num_bytes)
00066 {
00067   int rc = this->SOCKET_FAIL;
00068 
00069   rc = SEND(this->getSockHandle(), buffer, num_bytes, 0);
00070   
00071   return rc;
00072 }
00073 
00074 int TcpSocket::rawReceiveBytes(char *buffer, shared_int num_bytes)
00075 {
00076   int rc = this->SOCKET_FAIL;
00077   
00078   rc = RECV(this->getSockHandle(), buffer, num_bytes, 0);
00079   
00080   return rc;
00081 }
00082 
00083 bool TcpSocket::rawPoll(int timeout, bool & ready, bool & error)
00084 {
00085   timeval time;
00086   fd_set read, write, except;
00087   int rc = this->SOCKET_FAIL;
00088   bool rtn = false;
00089   ready = false;
00090   error = false;
00091 
00092   // The select function uses the timeval data structure
00093   time.tv_sec = timeout / 1000;
00094   time.tv_usec = (timeout % 1000) * 1000;
00095 
00096   FD_ZERO(&read);
00097   FD_ZERO(&write);
00098   FD_ZERO(&except);
00099 
00100   FD_SET(this->getSockHandle(), &read);
00101   FD_SET(this->getSockHandle(), &except);
00102 
00103   rc = SELECT(this->getSockHandle() + 1, &read, &write, &except, &time);
00104 
00105   if (this->SOCKET_FAIL != rc) {
00106     if (0 == rc)
00107       rtn = false;
00108     else {
00109       if (FD_ISSET(this->getSockHandle(), &read)) {
00110         ready = true;
00111         rtn = true;
00112       }
00113       else if(FD_ISSET(this->getSockHandle(), &except)) {
00114         error = true;
00115         rtn = true;
00116       }
00117       else {
00118         LOG_WARN("Select returned, but no flags are set");
00119         rtn = false;
00120       }
00121     }
00122   } else {
00123     this->logSocketError("Socket select function failed", rc, errno);
00124     rtn = false;
00125   }
00126   return rtn;
00127 }
00128 
00129 } //tcp_socket
00130 } //industrial
00131 


simple_message
Author(s): Shaun Edwards
autogenerated on Sat Jun 8 2019 20:43:23