HTTP.au3

WinHTTP-based library for AutoIt3 that allows GET, POST and upload.

Functions

string _HTTP_Get ( string $sURL )

Executes a HTTP Get request to $sURL.

Return value:

Success: the page content

Error: 0 and set @error to non-zero (see remarks).

Example:

MsgBox(0, "Google.com homepage content", _HTTP_Get("http://google.com") )
MsgBox(0, "Google.com search for ""AutoIt 3"" page content", _HTTP_Get("http://google.com/search?q=" & URLEncode("AutoIt 3")) )

string _HTTP_Post ( string $sURL , string $sPostData )

Executes a HTTP Post request to $sURL, sending $sPostData as parameters.

Return value:

Success: the page content

Error: 0 and set @error to non-zero (see remarks).

Example:

MsgBox(0, "Post test", _HTTP_Post("http://posttestserver.com/post.php", "foo=bar&test=" & URLEncode("Testing 123")) )

string _HTTP_Upload ( string $sURL , string $sFilePath , string $sFileField , string $sPostData = '' , string $sFilename = Default)

Executes a HTTP Post request to $sURL.

At the moment, it's only possible to upload 1 file per request. However it's planned to add multiple file upload support soon.

• $sURL: the URL to post to
• $sFilePath: the file path to upload (on your machine - it can be whether relative to the working dir or the system root)
• $sFileField: the name of the file input (get it on the form's HTML code: <input type="file" name="..." >
• $sPostData: additional data to send as POST (optional). Default is none.
• $sFilename: spoofs the filename (optional). If you do not provide any, then the original filename will be used.

Return value:

Success: the page content

Error: 0 and set @error to non-zero (see remarks).

Example

_HTTP_Upload("http://test/upload", @HomeDrive & "\Picture.jpg", "photo")

Remarks

URL encoding and decoding

When going to send form data through GET or POST in any of these functions (even if you are using $sPostData on _HTTP_Upload), you must put all the variables on only one line and URLEncode() the values, just as you see as query string on GET requests with variables on the URL.

This library supplies two additional functions for URL encoding/decoding. These are: URLEncode($sStr) and URLDecode($sStr).

ConsoleWrite(URLEncode("Code: AutoIt3")) ; Code%3A+AutoIt3
ConsoleWrite(URLDecode("Code%3A+AutoIt3")) ; Code: AutoIt3

Therefore, when sending data, here's what you must do. Notice that only VALUES, and not KEYS are encoded.

_HTTP_Get("http://test/script?str=" & URLEncode("Code: AutoIt3") )
_HTTP_Post("http://test/postscript", "str=" & URLEncode("Code: AutoIt3") )
_HTTP_Upload("http://test/postscript", "myPicture.jpg", "uploadinput", "str=" & URLEncode("Code: AutoIt3") )

Of course you can also supply the already-encoded text manually:

_HTTP_Get("http://test/script?str=Code%3A+AutoIt3")

Error handling

All these 3 main functions, in case of error, will return 0 and set @error to non-zero. Here's what @error means:

• 1: Could not instantiate WinHTTP and open a POST request.
• 2: Could not send request.
• 3: Other HTTP error (in this case @extended will return the HTTP status from the server)
• 4: Uploaded file does not exist (_HTTP_Upload() only)
• 5: Other COM error (@extended will contain the error hex code, whereas the console will show up the error description)

Attributions

HTTP_Upload is based on a VB version by Eric Phelps accessible here. Note that ADODB.Recordset need has been removed on this port.

URLEncode has been taken from AutoIt Forums, but the author is unknown. The source can be accessed here.