sockets: how to send html file to web browser that display it

Feb 5, 2010 at 11:14am
janhansen (1)
What i have done so far:
I have coded a program that makes a socket and allows a client to connect to it. To connect to the program i type in the web browser "http://localhost:8080/
I have tried to connect to this program with both firefox and IE. It works fine.
The part I need help with is how to send the html page to the webbrowser so that the browser displays it. I have tried to look at the binary section in:http://www.cplusplus.com/doc/tutorial/files/

code in the tutorial 
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 // reading a complete binary file
#include <iostream>
#include <fstream>
using namespace std;

ifstream::pos_type size;
char * memblock;

int main () {
  ifstream file ("example.bin", ios::in|ios::binary|ios::ate);
  if (file.is_open())
  {
    size = file.tellg();
    memblock = new char [size];
    file.seekg (0, ios::beg);
    file.read (memblock, size);
    file.close();

    cout << "the complete file content is in memory";

    delete[] memblock;
  }
  else cout << "Unable to open file";
  return 0;
}
Edit & run on cpp.sh


I tried to send the memblock variable with the sockets send() function but the browser wont react. I guess i am doing something wrong =( could you Pleeaas help me out here?




I have a large comment in the code that shows what part i need help with


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#include <winsock2.h>
#include <iostream>
#include <cstdlib>
#include <fstream>
using namespace std;

int main()
{

	//WSASTARTUP
	WORD wVersionRequested;
	WSADATA wsaData;
	int wsaerr;

	wVersionRequested = MAKEWORD(2, 2);

	wsaerr = WSAStartup(wVersionRequested, &wsaData);

	if(wsaerr != 0)
	{
		printf("error WSAStartup()\n");
	}
	else
	{
		printf("WSAStartup() is ok!\n");
	}

	//SOCKET

	SOCKET socketOne;

	socketOne = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

	if(socketOne == INVALID_SOCKET)
	{
		printf("error socket()\n");
	}
	else
	{
		printf("socket() is OK!\n");
	}

	//BIND

	sockaddr_in server;

	server.sin_family = AF_INET;
	server.sin_addr.s_addr = htonl(INADDR_ANY);
	server.sin_port = htons(8080);

	SOCKET errorCheckingSocket;

	errorCheckingSocket = bind(socketOne, (SOCKADDR*)&server, sizeof(server));

	if(errorCheckingSocket == SOCKET_ERROR)
	{
		printf("bind() failed!\n");
		closesocket(socketOne);
		return 0;
	}
	else
	{
		printf("bind() is OK!\n");
	}

	//LISTEN
	errorCheckingSocket = listen(socketOne, 5);

	if(errorCheckingSocket == SOCKET_ERROR)
	{
		printf("error listen()\n");
	}
	else
	{
		printf("listen() is OK!\n");
	}

	//ACCEPT
	SOCKET acceptSocket;
	printf("Server: Waiting for a client to connect...\n");
	printf("***Hint: Server is ready...run your client program...***\n");

	while(1)
	{
		acceptSocket = SOCKET_ERROR;

		while(acceptSocket == SOCKET_ERROR)
		{
			acceptSocket = accept(socketOne, NULL, NULL);
		}

		printf("Server: Client Connected!\n");
		socketOne = acceptSocket;

	//**********************THIS IS THE PART I NEED HELP WITH*****************************


	//what code to put in here so i can send the html file to the browser that is connected.
	// I want the browser to display the html page


	//************************************************************************************

		break;
	}
	cin.get();
	return 0;
}
Edit & run on cpp.sh
Last edited on Feb 5, 2010 at 11:16am
Feb 5, 2010 at 2:39pm
kbw (9488)
A browser already has the page it needs to display. The client only sends requests, not the actual page to be displayed.
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