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Visual C++ 5.x/6.x HTTP Get and HTTP Post Sample Source Code

ActiveSocket provides an easy-to-use development interface to a variety of IP protocols. By using ActiveSocket, you can very easily create or enhance applications with network features.

ActiveSocket features the following: DNS, FTP, HTTP, HTTPs, ICMP Ping, IP-to-Country, MSN, NTP, RSH, SCP, SFTP, SNMP v1/v2c (Get, GetNext, Set), SNMP Traps, SNMP MIB, SSH, TCP, Telnet, TFTP, UDP, Telnet, Wake-On-LAN and more.

HTTP Get and HTTP Post can be well integrated into Visual C++ 5.x/6.x environments. This document describes how the ActiveSocket Http object can be integrated into Visual C++ 5.x/6.x projects.

The most important functions of the Http object are:

  • Connect - connect to the (remote) HTTP web server on port 80 or any alternate port; optionally, use proxy credentials to use a proxy server; optionally, specify a web account and password for password protected web sites
  • Disconnect - to diconnect after a connect call;
  • ReadData - read all data from a web page;
  • WriteData - write data to a web page.

Step 2: Create a new Visual C++ project

Launch 'Microsoft Visual C++' from the Start menu, and choose 'New' from the 'File Menu'. The 'New' dialog appears.

Select the type of project (for instance: 'Win32 Console Application'), enter a 'Project name' and select the 'Location':

(Click on the picture to enlarge)

Select the kind of project, for instance a 'Hello, world!' application and click 'Finish':

(Click on the picture to enlarge)

Step 3: Refer to the ActiveSocket Library and declare the objects

A new Project is created now.

Before you can use ActiveSocket, you need to refer to the ActiveSocket library. The actually reference files are shipped with the product and are located in the following directory:

C:\Program Files\ActiveXperts\ActiveSocket\Examples\Visual C++\Include

Copy all files in the above directory ('ASocket.h', 'ASocket_i.c' and 'ASocketConstants.h') to your project directory.

On top of your code, declare the following object:

IFtpServer	*pFtpServer = NULL;

Step 4: Create the objects

Since the ActiveSocket Toolkit is a COM object, you must initialize the COM library before they can call COM library functions (e.g. ActiveSocket functions):

CoInitialize(NULL);

Create the object in the following way:

CoCreateInstance(CLSID_Http, NULL, CLSCTX_INPROC_SERVER, IID_IHttp, (void**) &pHttp );