Http type

MIDletPascal provides basic HTTP connectivity. Http connections are identified by their identifier variables which must be declared to be of 'http' type. The HTTP connection lifecycle is as follows:

• open a connection to a remote web server
• set the http request method
• add the request header fields (optional)
• add the data to the body of http request (only if the method is POST)
• send a request and wait for response from the server
• read desired header fields form the response
• read the response data
• close the connection

The following example illustrates simple use of http connectivity:

  var conn: http;
      htmlBody: string;
      contentType: string;
  begin
    if not openHttp(conn, 'http://www.google.com') then halt;
    setHttpMethod(conn, GET);
    addHttpHeader(conn, 'User-agent', 'MIDletPascal browser');
    if sendHttpMessage(conn) <> 200 then halt;
    htmlBody := getHttpResponse(conn);
    contentType := getHttpHeader(conn, 'Content-type');
    closeHttp(conn);
  end.

The internal emulator does not support Http connections. Sun's Wireless Toolkit emulator is recommended for off-phone http testing!