tcp_client.cpp
Go to the documentation of this file.
00001 /*
00002  * Software License Agreement (BSD License)
00003  *
00004  * Copyright (c) 2011, Southwest Research Institute
00005  * All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions are met:
00009  *
00010  *      * Redistributions of source code must retain the above copyright
00011  *      notice, this list of conditions and the following disclaimer.
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.
00018  *
00019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00020  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00021  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00022  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
00023  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00024  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00025  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00026  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00027  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00028  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00029  * POSSIBILITY OF SUCH DAMAGE.
00030  */
00031 #ifndef FLATHEADERS
00032 #include "simple_message/socket/tcp_client.h"
00033 #include "simple_message/log_wrapper.h"
00034 #else
00035 #include "tcp_client.h"
00036 #include "log_wrapper.h"
00037 #endif
00038 
00039 namespace industrial
00040 {
00041 namespace tcp_client
00042 {
00043 
00044 TcpClient::TcpClient()
00045 {
00046 
00047 }
00048 
00049 TcpClient::~TcpClient()
00050 {
00051   LOG_DEBUG("Destructing TCPClient");
00052 }
00053 
00054 bool TcpClient::init(char *buff, int port_num)
00055 {
00056 
00057   int rc;
00058   bool rtn;
00059   int disableNodeDelay = 1;
00060   struct hostent *ent;
00061   struct in_addr *in_a;
00062 
00063   rc = SOCKET(AF_INET, SOCK_STREAM, 0);
00064   if (this->SOCKET_FAIL != rc)
00065   {
00066     this->setSockHandle(rc);
00067 
00068     // The set no delay disables the NAGEL algorithm
00069     rc = SET_NO_DELAY(this->getSockHandle(), disableNodeDelay);
00070     if (this->SOCKET_FAIL == rc)
00071     {
00072       LOG_WARN("Failed to set no socket delay, sending data can be delayed by up to 250ms");
00073     }
00074 
00075     // Initialize address data structure
00076     memset(&this->sockaddr_, 0, sizeof(this->sockaddr_));
00077     this->sockaddr_.sin_family = AF_INET;
00078 
00079     // Check for 'buff' as hostname, and use that, otherwise assume IP address
00080     if (NULL != (ent = GETHOSTBYNAME(buff)))
00081     {
00082       in_a = (struct in_addr *) ent->h_addr_list[0];
00083       this->sockaddr_.sin_addr.s_addr = in_a->s_addr;
00084     }
00085     else 
00086     {
00087       this->sockaddr_.sin_addr.s_addr = INET_ADDR(buff);
00088     }
00089     this->sockaddr_.sin_port = HTONS(port_num);
00090 
00091     rtn = true;
00092 
00093   }
00094   else
00095   {
00096     LOG_ERROR("Failed to create socket, rc: %d", rc);
00097     rtn = false;
00098   }
00099   return rtn;
00100 }
00101 
00102 bool TcpClient::makeConnect()
00103 {
00104   bool rtn = false;
00105   int rc = this->SOCKET_FAIL;
00106   SOCKLEN_T addrSize = 0;
00107 
00108   if (!this->isConnected())
00109   {
00110     addrSize = sizeof(this->sockaddr_);
00111     rc = CONNECT(this->getSockHandle(), (sockaddr *)&this->sockaddr_, addrSize);
00112     if (this->SOCKET_FAIL != rc)
00113     {
00114       LOG_INFO("Connected to server");
00115       this->setConnected(true);
00116       rtn = true;
00117     }
00118     else
00119     {
00120       this->logSocketError("Failed to connect to server", rc, errno);
00121       rtn = false;
00122     }
00123   }
00124 
00125   else
00126   {
00127     LOG_WARN("Tried to connect when socket already in connected state");
00128   }
00129 
00130   return rtn;
00131 
00132 }
00133 
00134 } //tcp_client
00135 } //industrial
00136 


simple_message
Author(s): Shaun Edwards
autogenerated on Tue Jan 17 2017 21:10:02