B4X

HTTP HEAD Request

See more HTTP Examples

Sends an HTTP HEAD request and gets the response.

Note: The response to an HTTP HEAD request is always just the response header. The reponse body is always 0 length (thus the reason it's called a "HEAD" request..)

B4X

Dim success As Boolean = False

'  This example assumes the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

Dim http As ChilkatHttp
http.Initialize("http")

'  If the URL uses "https://", then the connection will be TLS.
'  Otherwise it will be TCP.

'  A failure is when we don't get any response.  It could be a timeout, an inability to connect, etc.
'  For example, a "404 Not Found" response is still a response, and thus deemed success in terms of the API..

Dim resp As ChilkatHttpResponse
resp.Initialize
success = http.HttpNoBody("HEAD", "https://example-code.com/", resp)
If success = False Then
    Log(http.LastErrorText)
    Return
End If


'  Examine the response.
Log("Status Code = " & resp.StatusCode)
Log("Status Line = " & resp.StatusLine)
Log("Status Text = " & resp.StatusText)
Log("Full Response Header:")
Log(resp.Header)
Log("----")
Dim numHeaderFields As Int = resp.NumHeaderFields
Log("Num Header Fields: " & numHeaderFields)
Dim i As Int
For i = 0 To numHeaderFields - 1
    Log(resp.GetHeaderName(i) & ": " & resp.GetHeaderValue(i))
Next