Read the REST Response Header and Status Code

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Demonstrates Rest.ReadResponseHeader, which reads the HTTP response status line and header fields after a staged send. The returned integer is the HTTP status code, or -1 if no response was received.

Background. The staged request model separates sending from reading: a SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.

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bool success = false;

Chilkat.Rest rest = new Chilkat.Rest();
bool bTls = true;
bool bAutoReconnect = true;
success = rest.Connect("example.com",443,bTls,bAutoReconnect);
if (success == false) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

success = rest.SendReqNoBody("GET","/api/items/123");
if (success == false) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

//  Read the HTTP response status line and header fields.  The returned integer is the HTTP status
//  code (such as 200, 404, or 500), or -1 if no response was received.
int statusCode = rest.ReadResponseHeader();
if (statusCode < 0) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

Debug.WriteLine("Response status code: " + Convert.ToString(statusCode));