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Swift

Receive Text from a Socket into a StringBuilder

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveSb, which receives text, decodes it using StringCharset, and appends it to a StringBuilder.

Background. Text send and receive operations encode and decode bytes using the StringCharset property. For plain ASCII or UTF-8 protocols, setting StringCharset to utf-8 is a safe default.

Chilkat Swift Downloads

Swift

func chilkatTest() {
    var success: Bool = false

    let socket = CkoSocket()!

    //  Connect to the server using TLS.  The 3rd argument enables the TLS handshake after the TCP
    //  connection succeeds; the 4th is the maximum time to wait, in milliseconds.
    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
    }

    //  StringCharset controls the character encoding used when sending and receiving text.
    socket.stringCharset = "utf-8"
    //  Send a request using a simple application-defined text protocol in which each message ends with a
    //  CRLF.
    var command: String? = "STATUS\r\n"
    success = socket.sendString(str: command)
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    //  Receive text and append it to a StringBuilder, decoding using StringCharset.
    let sb = CkoStringBuilder()!
    success = socket.receiveSb(sb: sb)
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    var responseText: String? = sb.getAsString()
    if sb.lastMethodSuccess == false {
        print("\(sb.lastErrorText!)")
        return
    }

    print("\(responseText!)")

}