Swift

Send a Staged Multipart REST Request

Demonstrates Rest.SendReqMultipart, which sends a multipart request using the parts configured on the object, then reads the response in separate steps.

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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Swift


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
    }

    //  Configure one multipart part before sending.
    rest.partSelector = "1"
    rest.addHeader(name: "Content-Type", value: "text/plain")
    rest.addHeader(name: "Content-Disposition", value: "form-data; name=\"field1\"")
    success = rest.setMultipartBodyString(bodyText: "value1")
    if success == false {
        print("\(rest.lastErrorText!)")
        return
    }

    //  Send the multipart request using the configured parts.
    success = rest.sendReqMultipart(httpVerb: "POST", uriPath: "/api/upload")
    if success == false {
        print("\(rest.lastErrorText!)")
        return
    }

    //  After sending, read the response status line and header fields.  The return value is the HTTP
    //  status code, or -1 if no response was received.
    var statusCode: Int = rest.readResponseHeader().intValue
    if statusCode < 0 {
        print("\(rest.lastErrorText!)")
        return
    }

    print("Response status code: \(statusCode)")

    //  Read the response body as text.
    var responseBody: String? = rest.readRespBodyString()
    if rest.lastMethodSuccess == false {
        print("\(rest.lastErrorText!)")
        return
    }

    print("\(responseBody!)")

}