C++socket Communication (client and server)

Win32 Console Edition

Get the native IP:

Cmd:ipconfig/all

I am writing a server and client point-to-point information Transfer (implementing mutual code that can be changed appropriately):

The server sent to the client is a struct-body data

struct Date {    float  M1;     float m2;     float m3;     float M_roll;     float M_pitch;     float M_rotate;} DataBlock;

On the server code (blocking):

#include"stdafx.h"#include<iostream>#include<string>#include<winsock2.h>#pragmaComment (lib, "Ws2_32.lib")usingstd::cout;usingstd::cin;usingSTD::string;usingStd::endl;typedefstructDate {floatM1; floatm2; floatm3; floatM_roll; floatM_pitch; floatM_rotate;} DataBlock;intMain () {cout<<"Server started! ....."<<Endl; //Initialize WinsockWsadata WsaD; WSAStartup (Makeword (1,1), &WsaD); //creating a listening socketSOCKET Slisten =sockets (Af_inet, Sock_stream, ipproto_tcp); //binding host addresses and listening sockets    structSockaddr_in my_addr;//Host Addressmy_addr.sin_family =af_inet; My_addr.sin_port= Htons (8088);//Specify PortMY_ADDR.SIN_ADDR.S_ADDR =htonl (Inaddr_any); Bind (Slisten, (structSOCKADDR *) &my_addr,sizeof(MY_ADDR)); //Start MonitoringListen (Slisten,5);//5 is the maximum number of connections//Start receiving data    structSockaddr_in c_addr;//Customer Address    intAddr_len =sizeof(C_ADDR); SOCKET Sconnect= Accept (Slisten, (structsockaddr*) &c_addr, &addr_len);//Create a connection socket from a listening socketcout<<"Connection established ..."<<Endl; Charbuf[ -];  while(true) {DataBlock client_send; cout<<"Enter (start) to start the change, enter (end) to end the service:"<<Endl; cout<<"enter what to send:";  while(Cin.getline (BUF, -))        {            stringRcover =buf; if(Rcover = ="End") Break; if(Rcover = ="Start") {cout<<"Please enter data in m1-m2-m3-m_roll-m_pitch-m_rotate format:"<<Endl; Chartransmit[ -]; Cin.getline (Transmit, -); Send (Sconnect, transmit, strlen (transmit)+1,0);//The string also has an end flagmemset (Transmit,0,sizeof(transmit)); }                    }        return 0; }

Client: (non-blocking)

The first thing to do is to have a macro (usually in the header file area of the. h file)

#include"stdafx.h"#include<iostream>#include<string>#include<cstring>#include<winsock2.h>#include<WS2tcpip.h>#include<vector>#include<sstream>#pragmaComment (lib, "Ws2_32.lib")using namespaceStd;typedefstructDate {floatM1; floatm2; floatm3; floatM_roll; floatM_pitch; floatM_rotate;} DataBlock;voidSplitex (vector<string>&strs,Const string& SRC,stringseparate_character) {    intSeparate_characterlen = Separate_character.size ();//splits the length of the string so that it can support delimiters like ",," multi-string    intLastposition =0, index =-1;  while(-1! = (Index =Src.find (Separate_character, lastposition))) {Strs.push_back (Src.substr (lastposition, index-lastposition)); Lastposition= index +Separate_characterlen; }    stringlaststring = Src.substr (lastposition);//Capture the contents of the last delimiter    if(!laststring.empty ()) Strs.push_back (laststring);//If there is content after the last delimiter, queue up.}floatStr_float (stringa) {floatb;                              StringStream SS; //string goto intSS <<A; SS>>b; returnb;}intMain () {cout<<"Client Startup"<<Endl; //Initialize WinsockWsadata WsaD; WSAStartup (Makeword (1,1), &WsaD); //creating a Client socketSOCKET sclient =sockets (Af_inet, Sock_stream, ipproto_tcp); //connecting to a serverU_long IMode =1;//if set to 0, this is a block -Ioctlsocket (Sclient, Fionbio, &IMode); structsockaddr_in servaddr; Servaddr.sin_family=af_inet; cout<<"Please enter the LAN IP address:"<<Endl; stringIPAddress; CIN>>IPAddress; cout<<IPAddress; Servaddr.sin_addr.s_addr= Inet_addr (Ipaddress.c_str ());//Specify the serverServaddr.sin_port = htons (8088);//Specify Portcout << endl<<"OK"<<Endl; Connect (sclient, (structsockaddr*) &servaddr,sizeof(SERVADDR));//connecting hosts via sockets            Charbuf[ -];        DataBlock Resu_data;  while(true) {            //Store the received characters            intLen = recv (sclient, buf,sizeof(BUF),0);//receiving data through a connection socket                        if(Len >0) {vector<string>result; cout<<"customer says:"<< buf <<Endl; stringTest =buf; cout<< Test <<Endl; Splitex (result, test,"-"); RESU_DATA.M1= Str_float (result[0]); RESU_DATA.M2= Str_float (result[1]); RESU_DATA.M3= Str_float (result[2]); Resu_data.m_roll= Str_float (result[3]); Resu_data.m_pitch= Str_float (result[4]); Resu_data.m_rotate= Str_float (result[5]); cout<< resu_data.m1 <<Endl; cout<< resu_data.m2 <<Endl; cout<< resu_data.m3 <<Endl; cout<< Resu_data.m_roll <<Endl; cout<< resu_data.m_pitch<<Endl; cout<< resu_data.m_rotate <<Endl; }                }                return 0;}

This is a point-to-point, first open server, and then open the client.

C++socket Communication (client and server)