原文 http://www.dzhang.com/blog/2012/09/18/a-simple-in-process-http-server-for-windows-8-metro-apps
简单来说，就是在UWP中做一个简单的Web Server，本实例UWP(server) 与 Winform(client) 在同一机子将无法通讯，但UWP（server）写client代码可调用调试。
注意，Package.appxmanifest 选项“功能”卡中的Internet配置。
Below is some code for a simple HTTP server for Metro/Modern-style Windows 8 apps. This code supports GET requests for a resource located at the root-level (e.g. http://localhost:8000/foo.txt) and looks for the corresponding file in the Data directory of the app package. This might be useful for unit testing, among other things.
public class HttpServer : IDisposable { ?private const uint BufferSize = 8192; ?private static readonly StorageFolder LocalFolder ??????????????= Windows.ApplicationModel.Package.Current.InstalledLocation; ?private readonly StreamSocketListener listener; ?public HttpServer(int port) { ???this.listener = new StreamSocketListener(); ???this.listener.ConnectionReceived += (s, e) => ProcessRequestAsync(e.Socket); ???this.listener.BindServiceNameAsync(port.ToString()); ?} ?public void Dispose() { ???this.listener.Dispose(); ?} ?private async void ProcessRequestAsync(StreamSocket socket) { ???// this works for text only ???StringBuilder request = new StringBuilder(); ???using(IInputStream input = socket.InputStream) { ?????byte[] data = new byte[BufferSize]; ?????IBuffer buffer = data.AsBuffer(); ?????uint dataRead = BufferSize; ?????while (dataRead == BufferSize) { ???????await input.ReadAsync(buffer, BufferSize, InputStreamOptions.Partial); ???????request.Append(Encoding.UTF8.GetString(data, 0, data.Length)); ???????dataRead = buffer.Length; ?????} ???} ???using (IOutputStream output = socket.OutputStream) { ?????string requestMethod = request.ToString().Split(‘\n‘)[0]; ?????string[] requestParts = requestMethod.Split(‘ ‘); ?????if (requestParts[0] == "GET") ???????await WriteResponseAsync(requestParts[1], output); ?????else ???????throw new InvalidDataException("HTTP method not supported: " ??????????????????????????????????????+ requestParts[0]); ???} ?} ?private async Task WriteResponseAsync(string path, IOutputStream os) { ???using (Stream resp = os.AsStreamForWrite()) { ?????bool exists = true; ?????try { ???????// Look in the Data subdirectory of the app package ???????string filePath = "Data" + path.Replace(‘/‘, ‘\\‘); ???????using (Stream fs = await LocalFolder.OpenStreamForReadAsync(filePath)) { ?????????string header = String.Format("HTTP/1.1 200 OK\r\n" + ?????????????????????????"Content-Length: {0}\r\n" + ?????????????????????????"Connection: close\r\n\r\n", ?????????????????????????fs.Length); ?????????byte[] headerArray = Encoding.UTF8.GetBytes(header); ?????????await resp.WriteAsync(headerArray, 0, headerArray.Length); ?????????await fs.CopyToAsync(resp); ???????} ?????} ?????catch (FileNotFoundException) { ???????exists = false; ?????} ?????if (!exists) { ???????byte[] headerArray = Encoding.UTF8.GetBytes( ?????????????????????????????"HTTP/1.1 404 Not Found\r\n" + ?????????????????????????????"Content-Length:0\r\n" + ?????????????????????????????"Connection: close\r\n\r\n"); ???????await resp.WriteAsync(headerArray, 0, headerArray.Length); ?????} ?????await resp.FlushAsync(); ???} ?}}Usage:
const int port = 8000;using (HttpServer server = new HttpServer(port)) { ?using (HttpClient client = new HttpClient()) { ???try { ?????byte[] data = await client.GetByteArrayAsync( ???????????????????"http://localhost:" + port + "/foo.txt"); ?????// do something with ????} ???catch (HttpRequestException) { ?????// possibly a 404 ???} ?}}Notes:
- The app manifest needs to declare the "Internet (Client & Server)" and/or the "Private Networks (Client & Server)" capability.
- Due to the Windows 8 security model:
- A Metro app can access network servers within its own process.
- A Metro app Foo can access network servers hosted by another Metro app Bar iff Foo has a loopback exemption. You can use
CheckNetIsolation.exeto do this. This is useful for debugging only, as it must be done manually. - A Desktop app cannot access network servers hosted by a Metro app. The
BackgroundDownloaderappears to fall into this category even though that is an API available to Metro apps.
A simple in-process HTTP server for UWP
原文地址：http://www.cnblogs.com/lonelyxmas/p/7599766.html