// local
do {
    // all network interfaces
    let ip1 = try IP(port: 5555, mode: .IPV4)

    // specific network interface
    let ip2 = try IP(networkInterface: "en0", port: 5555, mode: .IPV6)
} catch {
    // something bad happened :(
}

// remote
do {
    let ip3 = try IP(address: "127.0.0.1", port: 5555, mode: .IPV4)
} catch {
    // something bad happened :(
}

// server
do {
    let ip = try IP(port: 5555)
    let serverSocket = try TCPServerSocket(ip: ip)
    let clientSocket = try serverSocket.accept()

    let yo = try clientSocket.receiveString(untilDelimiter: "\n")
} catch {
    // something bad happened :(
}

// client
do {
    let ip = try IP(address: "127.0.0.1", port: 5555)
    let clientSocket = try TCPClientSocket(ip: ip)

    // calls to send append the data to an internal
    // buffer to minimize system calls
    try clientSocket.sendString("yo\n")\
    // flush actually sends all data in the buffer
    try clientSocket.flush()
} catch {
    // something bad happened :(
}