Q1: I am trying to send and http post request using c or c++ and get the response can some one provide me working code or a tutorial for winsock so I can get started
Q2: Is there any c/c++ networking library that only support windows (I am targeting windows only)
thanks in advance.
Edite1: I got the answer
#include <iostream>
#include <string>
#pragma comment (lib, "wsock32.lib")
#include <stdlib.h>
#include <winsock.h>
#include <sstream>
using namespace std;
#define BUFFERSIZE 1024
void die_with_error(char *errorMessage);
void die_with_wserror(char *errorMessage);
string HTTP_POST(string host,string path , string data){
string request;
string response;
int resp_leng;
char buffer[BUFFERSIZE];
struct sockaddr_in serveraddr;
int sock;
WSADATA wsaData;
char *ipaddress = "127.0.0.1";
int port = 80;
std::stringstream ss;
ss << data.length();
std::stringstream request2;
request2 << "POST " << path << " HTTP/1.1"<<endl;
request2 << "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)" << endl;
//request2 << "" << endl;
request2 << "Host: " << host << endl;
request2 << "Content-Length: " << data.length() << endl;
request2 << "Content-Type: application/x-www-form-urlencoded" << endl;
request2 << "Accept-Language: en-au" << endl;
request2 << endl;
request2 << data;
request = request2.str();
cout<< request << endl << "###################################################" << endl << endl;
//init winsock
if (WSAStartup(MAKEWORD(2, 0), &wsaData) != 0)
die_with_wserror("WSAStartup() failed");
//open socket
if ((sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
die_with_wserror("socket() failed");
//connect
memset(&serveraddr, 0, sizeof(serveraddr));
serveraddr.sin_family = AF_INET;
serveraddr.sin_addr.s_addr = inet_addr(ipaddress);
serveraddr.sin_port = htons((unsigned short) port);
if (connect(sock, (struct sockaddr *) &serveraddr, sizeof(serveraddr)) < 0)
die_with_wserror("connect() failed");
//send request
if (send(sock, request.c_str(), request.length(), 0) != request.length())
die_with_wserror("send() sent a different number of bytes than expected");
//get response
response = "";
resp_leng= BUFFERSIZE;
while (resp_leng == BUFFERSIZE)
{
resp_leng= recv(sock, (char*)&buffer, BUFFERSIZE, 0);
if (resp_leng>0)
response+= string(buffer).substr(0,resp_leng);
//note: download lag is not handled in this code
}
//disconnect
closesocket(sock);
//cleanup
WSACleanup();
return response;
}
int main(int argc, char *argv[])
{
string host = "localhost",
path = "/page.php",
data = "somedata=data1$somedata2=data2";
string res = HTTP_POST(host,path,data);
cout << res << endl;
cin.get();
}
void die_with_error(char *errorMessage)
{
cerr << errorMessage << endl;
cin.get();
exit(1);
}
void die_with_wserror(char *errorMessage)
{
cerr << errorMessage << ": " << WSAGetLastError() << endl;
cin.get();
exit(1);
}
