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Swift

Receive a Single Byte from a Socket

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveByte, which reads exactly one byte and stores its numeric value in the ReceivedInt property. The argument selects signed or unsigned interpretation.

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 one byte.  Its numeric value is stored in the ReceivedInt property.  Passing true
    //  interprets the byte as unsigned (0 through 255); false interprets it as signed.
    var bUnsigned: Bool = true
    success = socket.receiveByte(bUnsigned: bUnsigned)
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    print("Received byte value: \(socket.receivedInt.intValue)")

}