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#if UNITY_EDITOR || UNITY_STANDALONE || UNITY_ANDROID || UNITY_WP_8_1 || UNITY_WSA || UNITY_WEBGL || UNITY_IOS || UNITY_PS4 || UNITY_SAMSUNGTV || UNITY_XBOXONE || UNITY_TIZEN || UNITY_TVOS
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#define UNITY
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#endif
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//-----------------------------------------------------------------------
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// <copyright file="HTTPRequest.cs" company="Mapbox">
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// Copyright (c) 2016 Mapbox. All rights reserved.
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// Based on http://stackoverflow.com/a/12606963 and http://wiki.unity3d.com/index.php/WebAsync
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// </copyright>
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//-----------------------------------------------------------------------
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#if !UNITY
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namespace Mapbox.Platform {
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using System;
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using System.Net;
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#if !UNITY && !NETFX_CORE
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using System.Net.Cache;
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#endif
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using System.IO;
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using System.Collections.Generic;
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using System.Threading;
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using System.ComponentModel;
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using Utils;
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#if NETFX_CORE
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using System.Net.Http;
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using System.Linq;
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#endif
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internal sealed class HTTPRequestNonThreaded : IAsyncRequest {
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public bool IsCompleted { get; private set; }
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private Action<Response> _callback;
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#if !NETFX_CORE
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private HttpWebRequest _request;
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#else
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private HttpClient _request;
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private CancellationTokenSource _cancellationTokenSource = new CancellationTokenSource();
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#endif
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#if !UNITY
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private SynchronizationContext _sync = AsyncOperationManager.SynchronizationContext;
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#endif
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private int _timeOut;
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private string _requestUrl;
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private readonly string _userAgent = "mapbox-sdk-cs";
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/// <summary>
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///
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/// </summary>
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/// <param name="url"></param>
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/// <param name="callback"></param>
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/// <param name="timeOut">seconds</param>
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public HTTPRequestNonThreaded(string url, Action<Response> callback, int timeOut = 10) {
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IsCompleted = false;
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_callback = callback;
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_timeOut = timeOut;
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_requestUrl = url;
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setupRequest();
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Action a = () => { getResponseNonThreaded(_request, EvaluateResponse); };
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//Fire and forget ;-)
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a.BeginInvoke(a.EndInvoke, null);
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}
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private void setupRequest() {
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#if !NETFX_CORE
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_request = WebRequest.Create(_requestUrl) as HttpWebRequest;
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_request.UserAgent = _userAgent;
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//_hwr.UserAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36";
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//_hwr.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
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_request.Credentials = CredentialCache.DefaultCredentials;
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_request.KeepAlive = true;
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_request.ProtocolVersion = HttpVersion.Version11; // improved performance
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// improved performance.
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// ServicePointManager.DefaultConnectionLimit doesn't seem to change anything
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// set ConnectionLimit per request
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// https://msdn.microsoft.com/en-us/library/system.net.httpwebrequest(v=vs.90).aspx#Remarks
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// use a value that is 12 times the number of CPUs on the local computer
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_request.ServicePoint.ConnectionLimit = Environment.ProcessorCount * 6;
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_request.ServicePoint.UseNagleAlgorithm = true;
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_request.ServicePoint.Expect100Continue = false;
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_request.ServicePoint.MaxIdleTime = 2000;
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_request.Method = "GET";
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_request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");
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_request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
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//_hwr.Timeout = timeOut * 1000; doesn't work in async calls, see below
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#else
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HttpClientHandler handler = new HttpClientHandler() {
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AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate,
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AllowAutoRedirect = true,
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UseDefaultCredentials = true
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};
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_request = new HttpClient(handler);
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_request.DefaultRequestHeaders.Add("User-Agent", _userAgent);
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_request.Timeout = TimeSpan.FromSeconds(_timeOut);
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// TODO: how to set ConnectionLimit? ServicePoint.ConnectionLimit doesn't seem to be available.
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#endif
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#if !UNITY && !NETFX_CORE
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// 'NoCacheNoStore' greatly reduced the number of faulty request
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// seems that .Net caching and Mapbox API don't play well together
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_request.CachePolicy = new System.Net.Cache.RequestCachePolicy(System.Net.Cache.RequestCacheLevel.NoCacheNoStore);
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#endif
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}
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#if NETFX_CORE
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private async void getResponseNonThreaded(HttpClient request, Action<HttpResponseMessage, Exception> gotResponse) {
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// TODO: implement a strategy similar to the full .Net one to avoid blocking of 'GetAsync()'
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// see 'Remarks' https://docs.microsoft.com/en-us/dotnet/api/system.net.http.httpclient.timeout?view=netcore-1.1#System_Net_Http_HttpClient_Timeout
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// "A Domain Name System (DNS) query may take up to 15 seconds to return or time out."
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HttpResponseMessage response = null;
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try {
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response = await request.GetAsync(_requestUrl, _cancellationTokenSource.Token);
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gotResponse(response, null);
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}
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catch (Exception ex) {
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gotResponse(response, ex);
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}
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}
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private async void EvaluateResponse(HttpResponseMessage apiResponse, Exception apiEx) {
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var response = await Response.FromWebResponse(this, apiResponse, apiEx);
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// post (async) callback back to the main/UI thread
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// Unity: SynchronizationContext doesn't do anything
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// use the Dispatcher
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#if !UNITY
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_sync.Post(delegate { callCallbackAndcleanUp(response); }, null);
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#else
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UnityToolbag.Dispatcher.InvokeAsync(() => { callCallbackAndcleanUp(response); });
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#endif
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}
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#endif
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#if !NETFX_CORE
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private void getResponseNonThreaded(HttpWebRequest request, Action<HttpWebResponse, Exception> gotResponse) {
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HttpWebResponse response = null;
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try {
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response = (HttpWebResponse)request.GetResponse();
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gotResponse(response, null);
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}
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catch (WebException wex) {
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//another place to watchout for HttpWebRequest.Abort to occur
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if (wex.Status == WebExceptionStatus.RequestCanceled) {
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gotResponse(null, wex);
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} else {
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HttpWebResponse hwr = wex.Response as HttpWebResponse;
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if (null == hwr) {
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gotResponse(null, wex);
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} else {
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gotResponse(hwr, wex);
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}
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}
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}
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catch (Exception ex) {
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gotResponse(response, ex);
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}
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}
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private void EvaluateResponse(HttpWebResponse apiResponse, Exception apiEx) {
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var response = Response.FromWebResponse(this, apiResponse, apiEx);
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#if !UNITY
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// post (async) callback back to the main/UI thread
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// Unity: SynchronizationContext doesn't do anything
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// use the Dispatcher
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_sync.Post(delegate { callCallbackAndcleanUp(response); }, null);
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#else
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// Unity is playing
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if (UnityToolbag.Dispatcher._instanceExists) {
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UnityToolbag.Dispatcher.InvokeAsync(() => { callCallbackAndcleanUp(response); });
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} else { // Unity is in Edit Mode
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#if UNITY_EDITOR
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Mapbox.Unity.DispatcherEditor.InvokeAsync(() => { callCallbackAndcleanUp(response); });
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#endif
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}
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#endif
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}
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#endif
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private void callCallbackAndcleanUp(Response response) {
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_callback(response);
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IsCompleted = true;
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_callback = null;
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#if NETFX_CORE
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if (null != _request) {
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_request.Dispose();
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_request = null;
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}
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#endif
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}
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public void Cancel() {
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#if !NETFX_CORE
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if (null != _request) {
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_request.Abort();
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}
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#else
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_cancellationTokenSource.Cancel();
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#endif
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}
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}
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}
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#endif
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