121 lines
3.7 KiB
Plaintext
121 lines
3.7 KiB
Plaintext
///////////////////////////////////////////////////////////////////////////////
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//
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// Microsoft Research Singularity
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// File: Spew.sg
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//
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// Note: The Spew web app (serves files and supports browsing)
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//
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using System;
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using System.Collections;
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using System.Diagnostics;
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using Microsoft.SingSharp;
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using Microsoft.SingSharp.Runtime;
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using Microsoft.Singularity.Channels;
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using Microsoft.Singularity.Directory;
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using Microsoft.Singularity.WebApps;
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using Microsoft.Singularity.WebApps.Contracts;
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using System.Text;
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using System.Web;
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using FileSystem.Utils;
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namespace Microsoft.Singularity.WebApps
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{
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public class SpewWebApp : IWebApp
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{
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private const string RepeatPattern = "Here is a repeating string of text that serves as content. ";
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public void ProcessRequest(IHttpRequest! request)
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{
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string query = request.GetQueryString();
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int numBytes = 0, chunkSize = 5840; // 1460 * 4
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ExtractQueryParamNumValue("numBytes", query, ref numBytes);
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ExtractQueryParamNumValue("chunkSize", query, ref chunkSize);
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request.SendStatus(200, "OK");
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request.SendHeader("Content-type", "text/plain");
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if (numBytes == 0) {
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request.SendBodyData(Encoding.ASCII.GetBytes("Specify a 'numBytes' query param, and optionally a 'chunkSize' query param!"));
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request.Done();
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} else {
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byte[]! in ExHeap buf;
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int bytesWritten = 0, patternLength = RepeatPattern.Length;
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while (bytesWritten < numBytes) {
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int bytesLeft = numBytes - bytesWritten;
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int thisPass = chunkSize < bytesLeft ? chunkSize : bytesLeft;
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buf = new[ExHeap] byte[thisPass];
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for (int i = 0; i < thisPass; i++) {
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buf[i] = (byte)RepeatPattern[i % patternLength];
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}
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request.SendBodyData(buf);
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bytesWritten += thisPass;
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}
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request.Done();
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}
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}
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private bool ExtractQueryParamNumValue(string! paramName, string queryString, ref int outVal)
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{
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if (queryString == null) {
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return false;
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}
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int start = queryString.IndexOf(paramName + "=");
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if (start == -1) {
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return false;
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}
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start += paramName.Length + 1;
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int end = queryString.IndexOf("&", start);
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string val;
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if (end == -1) {
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val = queryString.Substring(start);
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}
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else {
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val = queryString.Substring(start, end - start);
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}
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try {
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outVal = Int32.Parse(val);
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return true;
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}
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catch (Exception) {
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return false;
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}
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}
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// ======================================================
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// The code below gets used when this webapp is compiled
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// to a stand-alone executable
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public static void Main(string[]! args)
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{
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Endpoint * in ExHeap ep = Process.GetStartupEndpoint(0);
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WebAppContract.Exp conn = ep as WebAppContract.Exp;
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if (conn == null) {
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// Wrong contract type!
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delete ep;
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return;
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}
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conn.SendWebAppReady();
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SpewWebApp webApp = new SpewWebApp();
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Driver.ServiceChannel(webApp, conn);
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delete conn;
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}
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}
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}
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