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HTTP HEAD Request to Determine if Resource Exists and Size This example sends an HTTP HEAD request to determine if a resource exists on an HTTP server. If so, it reports the size (in bytes) of the resource. The HTTP HEAD request can be used to query about a resource without downloading it. Chilkat.Http http = new Chilkat.Http();
bool unlocked = http.UnlockComponent("Any string begins 30-day trial");
if (!unlocked)
{
MessageBox.Show("Failed to unlock HTTP component");
return;
}
Chilkat.HttpRequest req = new Chilkat.HttpRequest();
req.UseHead();
req.Path = "/download/ChilkatDotNet.msi";
bool ssl = false; // Set this to true to use HTTPS
Chilkat.HttpResponse resp = http.SynchronousRequest("www.chilkatsoft.com",80,false,req);
if (resp == null)
{
MessageBox.Show(http.LastErrorText);
return;
}
// Does the resource exist?
if (resp.StatusCode == 200)
{
// Display a message with the size of the resource in bytes.
MessageBox.Show("The web resource exists and is " +
Convert.ToString(resp.ContentLength) + " bytes");
}
else
{
// Show the full response header...
MessageBox.Show(resp.Header);
}
Important: The download for this
example does not contain the ChilkatDotNet.dll which |
Need a specific example? Send a request to support@chilkatsoft.com
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