Winsock recv giving gibberish mixed with useful html

manpreet Best Answer 2 years ago

I'm trying to get the html source of a webpage www.chemguide.co.uk (it has pages that aren't miles long) using winsock implemented in c++. Most of the data that comes through is good, but at certain points in the output there is a certain character (it looks like |¦ on the console and some sort of I on here) being repeated, I think in groups of 8, and there are some other strange characters as well.

Also, some of the document seems to be printed after the end of the page (the tag. Here's the code:

// Portprog.cpp : Defines the entry point for the console application.
//


#include "stdafx.h"
#include 
#include 
#include 
#include 
#include 
#include 


#pragma comment(lib, "ws2_32.lib") //Winsock library

int getHTML(std::string *result)
{
    WSADATA wsa;
    SOCKET s;
    SOCKADDR_IN server;
    using std::string;
    using std::cout;
    using std::endl;

    cout << "Initialising Winsock...";
    if (WSAStartup(MAKEWORD(2, 2), &wsa) != 0)
    {
        cout << "Failed. Error Code: " << WSAGetLastError();
        return 1;
    }
    cout << "Winsock initialised." << endl;

    if ((s = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
    {
        cout << "Could not create socket: " << WSAGetLastError() << endl;
        return 1;
    }
    cout << "Socket created." << endl;

    server.sin_addr.s_addr = inet_addr("217.27.240.124");
    server.sin_family = AF_INET;
    server.sin_port = htons(80); //host to network endian short

    //Connect to remote server
    if (connect(s, (SOCKADDR *)&server, sizeof(server)) < 0)
    {
        cout << "Connection failed." << endl;
        return 1;
    }
    cout << "Connected." << endl;

    //Send some data
    string srequest = "GET / HTTP/1.1\r\n";
    srequest += "Host: chemguide.co.uk\r\n";
    srequest += "Connection: close\r\n";
    srequest += "Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5\r\n";
    srequest += "\r\n";

    char crequest[10000];
    int requestSize = srequest.length() + 1;
    strncpy_s(crequest,
                                                    

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