Thread: C++ winsock downloading webpage 505 error

Hi,
I been playing around with C++ using winsock.h to download webpages. I can get it to work for pages such as http://www.research.att.com/~bs/homepage.html
I have also tried for ebay, some pages work fine, however pages like ebay example don't work, and i get a 505 error code. From what i understand this code means that there is an incompatibility between the HTTP versions of the client and server. However this does not seem to be the case since I send that I support 1.1, and the server sends a reply that it supports 1.1.

This is an example of the message i send:

Code:

GET windows-folder_W0QQitemZ280062863525QQihZ018QQcategoryZ80555QQrdZ1QQcmdZViewItem HTTP/1.1
Host: cgi.ebay.co.uk

This is an example of the response:

Code:

HTTP/1.1 505 HTTP Version Not Supported
Server: Apache-Coyote/1.1
Date: Fri, 29 Dec 2006 00:29:55 GMT
Connection: close

I have noticed that if i'm getting the page from listings.ebay.co.uk it works but cgi.ebay.co.uk does not.

Any help would be much appreciated.

Thanks for the replies.

The code has worked for multiple different webpages, but seems to have a problem with pages on cgi.ebay.co.uk

I have never used a network analyser before, I will take a look at Ethereal now.

Here's the code I have been using, which gets the header of a page using a HEAD request. (I have been using GET to get the page). If anyone can spot anything causing the problem that would be great.

(I have copied the code exactly from a working program so it should compile fine).
libws2_32.a is linked to the project.

Code:

#include <winsock.h>
#include <iostream>

int GetHTTP(std::string lpServerName, std::string lpFileName, std::string* file);

int main()
{
    std::string page_string;
 
    //int GetHTTP_return = GetHTTP("www.research.att.com", "/~bs/homepage.html" , &page_string);
    
    int GetHTTP_return = GetHTTP("cgi.ebay.co.uk", "/windows-folder_W0QQitemZ280062863525QQihZ01"
                                 "8QQcategoryZ80555QQrdZ1QQcmdZViewItem" , &page_string);
    
    if (GetHTTP_return == 0)
    {
       std::cout << "Header received. \n\n" << page_string << std::endl;
    }
    else std::cout << "ERROR" << std::endl;    
                  
	system ("PAUSE");
	
	return 0;
}

int GetHTTP(std::string lpServerName, std::string lpFileName, std::string* file)
{
    
    WORD wVersionRequested = MAKEWORD(1,1);
	WSADATA wsaData;
	int nRet;

	nRet = WSAStartup(wVersionRequested, &wsaData);
	if (nRet != 0)
	{
		WSACleanup();
		return 1;
	}
	
	if (wsaData.wVersion != wVersionRequested)
	{
		WSACleanup();
		return 2;
	} 
    
    
	IN_ADDR		iaHost;
	LPHOSTENT	lpHostEntry;

	iaHost.s_addr = inet_addr(lpServerName.c_str());
	if (iaHost.s_addr == INADDR_NONE)
	{
		lpHostEntry = gethostbyname(lpServerName.c_str());
	}
	else
	{
		lpHostEntry = gethostbyaddr((const char *)&iaHost, 
						sizeof(struct in_addr), AF_INET);
	}
	if (lpHostEntry == NULL)
	{
		return WSAGetLastError();
	}
    
	SOCKET	Socket;	

	Socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
	if (Socket == INVALID_SOCKET)
	{ 
		return WSAGetLastError();
	}

	LPSERVENT lpServEnt;
	SOCKADDR_IN saServer;

	lpServEnt = getservbyname("http", "tcp");
	if (lpServEnt == NULL)
		saServer.sin_port = htons(80);
	else
		saServer.sin_port = lpServEnt->s_port;

	saServer.sin_family = AF_INET;
	saServer.sin_addr = *((LPIN_ADDR)*lpHostEntry->h_addr_list);

	nRet = connect(Socket, (LPSOCKADDR)&saServer, sizeof(SOCKADDR_IN));
	if (nRet == SOCKET_ERROR)
	{
		closesocket(Socket);
		return WSAGetLastError();
	}
	
	std::string szBuffer_s;
   
    szBuffer_s = "HEAD " + lpFileName + " HTTP/1.1 \r\nHost: " + lpServerName + 
                 "\r\nConnection: close" "\r\n\r\n";
                 
    std::cout << "Client message sent. \n\n" << szBuffer_s << std::endl;
    
	nRet = send(Socket, szBuffer_s.c_str(), szBuffer_s.length(), 0);
	if (nRet == SOCKET_ERROR)
	{
		closesocket(Socket);	
		return WSAGetLastError();
	}
	
	char szBuffer[1024];
	int array_int_copy = 0;
	
	while(1)
	{
		nRet = recv(Socket, szBuffer, 1024, 0);
		if (nRet == SOCKET_ERROR)
		{
            closesocket(Socket);
			return WSAGetLastError();
		}

		if (nRet == 0)
			break;
			
		array_int_copy = 0;
		while (array_int_copy != nRet)
		{
        *file += szBuffer[array_int_copy];
        array_int_copy+=1;
        }

	}
	closesocket(Socket);
    
    WSACleanup();	
	
	return 0;
	
}

Cactus_Hugger you are a genius.
Worked like a charm.
Simple problems are always the most frustrating.

Thanks for all the help.

god_of_war