Zi 字媒體

C# WEB SERVER(簡易秀圖) 資料來源:https://blog.darkthread.net/blog/macro-http-server/ GITHUB: https://github.com/jash-git/CS_WebServer code: using System; using System.Collections.Generic; using System.IO; using System.Net; using System.Net.Sockets; using System.Threading; using System.Text; namespace CS_WebServer { //Reuquest物件 public class CompactRequest { public string Method, Url, Protocol; public Dictionary Headers; //傳入StreamReader，讀取Request傳入的內容 public CompactRequest(StreamReader sr) { //第一列格式如: GET /index.html HTTP/1.1 string firstLine = sr.ReadLine(); string[] p = firstLine.Split(' '); Method = p[0]; Url = (p.Length > 1) ? p[1] : "NA"; Protocol = (p.Length > 2) ? p[2] : "NA"; //讀取其他Header，格式為HeaderName: HeaderValue string line = null; Headers = new Dictionary(); while (!string.IsNullOrEmpty(line = sr.ReadLine())) { int pos = line.IndexOf(":"); if (pos > -1) Headers.Add(line.Substring(0, pos), line.Substring(pos + 1)); } } } //Response物件 public class CompactResponse { //預設200, 404, 500三種回應 public class HttpStatus { public static string Http200 = "200 OK"; public static string Http404 = "404 Not Found"; public static string Http500 = "500 Error"; } public string StatusText = HttpStatus.Http200; public string ContentType = "text/plain"; //可回傳Response Header public Dictionary Headers = new Dictionary(); //傳回內容，以byte[]表示 public byte[] Data = new byte[] { }; } //簡陋但堪用的HTTP Server public class MicroHttpServer { private Thread serverThread; TcpListener listener; //呼叫端要準備一個函數，接收CompactRequest，回傳CompactResponse public MicroHttpServer(int port, Func reqProc) { IPAddress ipAddr = IPAddress.Parse("192.168.0.179"); listener = new TcpListener(ipAddr, port); //另建Thread執行 serverThread = new Thread(() => { listener.Start(); while (true) { Socket s = listener.AcceptSocket(); NetworkStream ns = new NetworkStream(s); //解讀Request內容 StreamReader sr = new StreamReader(ns); CompactRequest req = new CompactRequest(sr); //呼叫自訂的處理邏輯，得到要回傳的Response CompactResponse resp = reqProc(req); //傳回Response StreamWriter sw = new StreamWriter(ns); sw.WriteLine("HTTP/1.1 {0}", resp.StatusText); sw.WriteLine("Content-Type: " + resp.ContentType); foreach (string k in resp.Headers.Keys) sw.WriteLine("{0}: {1}", k, resp.Headers[k]); sw.WriteLine("Content-Length: {0}", resp.Data.Length); sw.WriteLine(); sw.Flush(); //寫入資料本體 s.Send(resp.Data); //結束連線 s.Shutdown(SocketShutdown.Both); ns.Close(); } }); serverThread.Start(); } public void Stop() { listener.Stop(); serverThread.Abort(); } } class Program { static string path = System.AppDomain.CurrentDomain.BaseDirectory + "\\image"; static void Main(string[] args) { MicroHttpServer mhs = new MicroHttpServer(1688, (req) => { if (req.Url == "/") return ListPhoto(req); else if (req.Url.EndsWith(".png")) return GetJpeg( Path.Combine(path, req.Url.TrimStart('/'))); else return new CompactResponse() { StatusText = CompactResponse.HttpStatus.Http500 }; }); Console.Write("Press any key to stop..."); Console.Read(); mhs.Stop(); } //列出圖檔，組成網頁傳回 static CompactResponse ListPhoto(CompactRequest req) { StringBuilder sb = new StringBuilder(); sb.Append(@" Index img { width:100%;float: left; margin: 0px; } "); sb.Append(""); foreach (string file in Directory.GetFiles(path, "*.png")) sb.AppendFormat("", Path.GetFileName(file)); sb.Append(""); return new CompactResponse() { ContentType = "text/html", Data = Encoding.UTF8.GetBytes(sb.ToString()) }; } //取得圖檔 static CompactResponse GetJpeg(string file) { if (File.Exists(file)) return new CompactResponse() { ContentType = "image/jpeg", Data = File.ReadAllBytes(file) }; else //找不到檔案時傳回HTTP 404 return new CompactResponse() { StatusText = CompactResponse.HttpStatus.Http404 }; } } }