Get a REST Response Header Value by Index

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Demonstrates Rest.ResponseHdrValue, which returns the value of the response header at a zero-based index. The same index used with ResponseHdrName gives the corresponding field name.

func chilkatTest() {
    var success: Bool = false

    let rest = CkoRest()!
    var bTls: Bool = true
    var bAutoReconnect: Bool = true
    success = rest.connect(hostname: "example.com", port: 443, tls: bTls, autoReconnect: bAutoReconnect)
    if success == false {
        print("\(rest.lastErrorText!)")
        return
    }

    success = rest.sendReqNoBody(httpVerb: "GET", uriPath: "/api/items/123")
    if success == false {
        print("\(rest.lastErrorText!)")
        return
    }

    var statusCode: Int = rest.readResponseHeader().intValue
    if statusCode < 0 {
        print("\(rest.lastErrorText!)")
        return
    }

    //  Return the value of the response header at a zero-based index.  Use the same index with
    //  ResponseHdrName to get the corresponding field name.
    var numHeaders: Int = rest.numResponseHeaders.intValue
    var i: Int
    for i = 0; i <= numHeaders - 1; i++ {
        var value: String? = rest.responseHdrValue(index: i)
        if rest.lastMethodSuccess == false {
            print("\(rest.lastErrorText!)")
            return
        }

        print("Header \(i) value: \(value!)")
    }


}