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//===----------------------------------------------------------------------===//
//
// This source file is part of the SwiftNIO open source project
//
// Copyright (c) 2017-2018 Apple Inc. and the SwiftNIO project authors
// Licensed under Apache License v2.0
//
// See LICENSE.txt for license information
// See CONTRIBUTORS.txt for the list of SwiftNIO project authors
//
// SPDX-License-Identifier: Apache-2.0
//
//===----------------------------------------------------------------------===//
import struct Foundation.URL
import NIO
import NIOSSL
private final class EchoHandler: ChannelInboundHandler {
public typealias InboundIn = ByteBuffer
func channelRead(context: ChannelHandlerContext, data: NIOAny) {
context.write(data, promise: nil)
}
func channelReadComplete(context: ChannelHandlerContext) {
context.flush()
}
}
let certificateChain = try NIOSSLCertificate.fromPEMFile("cert.pem")
let sslContext = try! NIOSSLContext(configuration: TLSConfiguration.makeServerConfiguration(
certificateChain: certificateChain.map { .certificate($0) },
privateKey: .file("key.pem"))
)
let group = MultiThreadedEventLoopGroup(numberOfThreads: 1)
let bootstrap = ServerBootstrap(group: group)
// Specify backlog and enable SO_REUSEADDR for the server itself
.serverChannelOption(ChannelOptions.backlog, value: 256)
.serverChannelOption(ChannelOptions.socket(SocketOptionLevel(SOL_SOCKET), SO_REUSEADDR), value: 1)
// Set the handlers that are applied to the accepted channels.
.childChannelInitializer { channel in
return channel.pipeline.addHandler(NIOSSLServerHandler(context: sslContext)).flatMap {
channel.pipeline.addHandler(EchoHandler())
}
}
// Enable TCP_NODELAY and SO_REUSEADDR for the accepted Channels
.childChannelOption(ChannelOptions.socket(IPPROTO_TCP, TCP_NODELAY), value: 1)
.childChannelOption(ChannelOptions.socket(SocketOptionLevel(SOL_SOCKET), SO_REUSEADDR), value: 1)
defer {
try! group.syncShutdownGracefully()
}
// First argument is the program path
let arguments = CommandLine.arguments
let arg1 = arguments.dropFirst().first
let arg2 = arguments.dropFirst().dropFirst().first
var host: String = "::1"
var port: Int = 4433
switch (arg1, arg1.flatMap { Int($0) }, arg2.flatMap { Int($0) }) {
case (.some(let h), _ , .some(let p)):
/* we got two arguments, let's interpret that as host and port */
host = h
port = p
case (_, .some(let p), _):
/* only one argument --> port */
port = p
default:
()
}
let channel = try bootstrap.bind(host: host, port: port).wait()
print("Server started and listening on \(channel.localAddress!)")
// This will never unblock as we don't close the ServerChannel
try channel.closeFuture.wait()
print("Server closed")
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