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Swift

Send BinData Contents over a Socket

See more Socket/SSL/TLS Examples

Demonstrates Socket.SendBd, which sends bytes from a BinData beginning at an offset. A numBytes of 0 sends from the offset through the end of the data.

Background. The BinData receive methods accumulate raw bytes in a BinData object. A single receive returns only what is currently available, whereas the counted receive waits for an exact number of bytes.

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
    }

    //  Place some bytes into a BinData to be sent.
    let bd = CkoBinData()!
    bd.appendString(str: "message payload", charset: "utf-8")

    //  Send bytes from the BinData starting at the given offset.  A numBytes of 0 sends from the offset
    //  through the end of the data.
    success = socket.sendBd(binData: bd, offset: 0, numBytes: 0)
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    print("Sent \(bd.numBytes.intValue) bytes.")

}