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Swift

Receive a 16-bit Integer from a Socket

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveInt16, which reads exactly two bytes as a 16-bit integer and stores the result in the ReceivedInt property. Byte order and signedness are selectable.

Background. Fixed-size integers and length prefixes are common building blocks for application-defined binary protocols. Byte order is selectable, with big-endian being network byte order.

Chilkat Swift Downloads

Swift

func chilkatTest() {
    var success: Bool = false

    let socket = CkoSocket()!

    //  Connect to the server using TLS.
    var bTls: Bool = true
    var maxWaitMs: Int = 5000
    success = socket.connect(hostname: "example.com", port: 5000, ssl: bTls, maxWaitMs: maxWaitMs)
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    //  Read exactly two bytes as a 16-bit integer and store the result in the ReceivedInt property.
    //  The 1st argument selects byte order (true = big-endian); the 2nd selects unsigned interpretation.
    var bBigEndian: Bool = true
    var bUnsigned: Bool = false
    success = socket.receiveInt16(bigEndian: bBigEndian, bUnsigned: bUnsigned)
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    print("Received 16-bit integer: \(socket.receivedInt.intValue)")

}