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Curl_Exec (curlhandle)

Result Type:  string or CURLcode number

Definition:  Performs the CURL operation for the given curl object, and (usually) returns the response as a string. If you supply a write callback to collect response data, the result will be the completion CURLcode value.

The curlhandle will previously have been initialised with Curl_Init and had options set on it with Curl_SetOpt.

Example:  Just getting the data

    let ch = curl_init("http://cognito.co.nz/")    
    let data = curl_exec(ch)
    syslog("data = " + data)

Example:  Getting a result code as well. There are many ways a network request can fail, and it is useful to know why. While debugging, you can also check the log file for CURL errors.

property retval = ""

on MyWriteCallback(someData) 
    let retval = retval + someData
    // optionally return false to abort
end

on Load
    let ch = curl_init("http://cognito.co.nz")    
    curl_setopt(ch, CURLOPT_FOLLOWLOCATION, 1)
    // by supplying a write callback, curl_exec will return
    // a curl result code instead of the retrieved data
    curl_setopt(ch, CURLOPT_WRITEFUNCTION, "MyWriteCallback")        
    let errorCode = curl_exec(ch)
    syslog("CURL result = " + errorCode)
    syslog("data = " + retval)
end

Availability:  available within MWScript handlers.

See Also:

Base64Decode: String from a base64 encoding

Base64Encode: Base64 of a string

Curl_Close: Finish with a CURL session

Curl_Init: Start a CURL session

URLEncode: Convert url unsafe characters in a string to "%xx”