Swift

Explaining the Rest ClearResponseBodyStream Method

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The ClearResponseBodyStream method would be needed if your applicaiton called SetResponseBodyStream to send the response to a stream for one request, but then wants to subsequently do something else. The application must call ClearResponseBodyStream to no longer send responses to the stream. Swift

func chilkatTest() {
    var success: Bool = false

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

    let rest = CkoRest()!

    // Connect to the web server
    var bTls: Bool = true
    var port: Int = 443
    var bAutoReconnect: Bool = true
    success = rest.connect(hostname: "www.chilkatsoft.com", port: port, tls: bTls, autoReconnect: bAutoReconnect)
    if success != true {
        print("\(rest.lastErrorText!)")
        return
    }

    // Setup a file stream for the download
    let fileStream = CkoStream()!
    fileStream.sinkFile = "qa_output/starfish.jpg"

    // Indicate that the call to FullRequestNoBody should send the response body
    // to fileStream if the response status code is 200.
    // If a non-success response status code is received, then nothing
    // is streamed to the output file and the error response is returned by FullRequestNoBody.
    var expectedStatus: Int = 200
    rest.setResponseBodyStream(expectedStatus: expectedStatus, autoSetStreamCharset: true, responseStream: fileStream)

    var responseStr: String? = rest.fullRequestNoBody(httpVerb: "GET", uriPath: "/images/starfish.jpg")
    if rest.lastMethodSuccess == false {
        // Examine the request/response to see what happened.
        print("response status code = \(rest.responseStatusCode.intValue)")
        print("response status text = \(rest.responseStatusText!)")
        print("response header: \(rest.responseHeader!)")
        print("response body (if any): \(responseStr!)")
        print("---")
        print("LastRequestStartLine: \(rest.lastRequestStartLine!)")
        print("LastRequestHeader: \(rest.lastRequestHeader!)")
        return
    }

    print("downloaded starfish.jpg")

    // Clear the response body stream previously set in the call to SetResponseBodyStream.
    rest.clearResponseBodyStream()

    // Download something else, but this time send the response body to bd.
    let bd = CkoBinData()!
    success = rest.fullRequestNoBodyBd(httpVerb: "GET", uriPath: "/images/penguins.jpg", binData: bd)
    if success == false {
        // Examine the request/response to see what happened.
        print("response status code = \(rest.responseStatusCode.intValue)")
        print("response status text = \(rest.responseStatusText!)")
        print("response header: \(rest.responseHeader!)")
        print("response body (if any): \(bd.getString(charset: "utf-8")!)")
        print("---")
        print("LastRequestStartLine: \(rest.lastRequestStartLine!)")
        print("LastRequestHeader: \(rest.lastRequestHeader!)")
        return
    }

    // Save the contents of bd to a file.
    success = bd.writeFile(path: "qa_output/penguins.jpg")

    print("Success: \(success)")

}