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//
// ARF - Augmented Reality Framework (ETSI ISG ARF)
//
// Copyright 2024 ETSI
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Last change: September 2024
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//
// Depends on UniTask to support cancellation token and GetAwaiter: https://github.com/Cysharp/UniTask
// Otherwise, the code can be adapted using https://gist.github.com/krzys-h/9062552e33dd7bd7fe4a6c12db109a1a
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading;
using System.Threading.Tasks;
//using Cysharp.Threading.Tasks;
using UnityEngine;
using UnityEngine.Networking;
namespace ETSI.ARF.OpenAPI.WorldAnalysis
{
public interface IHttpClient
{
public Uri BaseAddress { get; set; }
public HttpRequestHeaders DefaultRequestHeaders { get; }
public Task<HttpResponseMessage> SendAsync(HttpRequestMessage message, HttpCompletionOption option,
CancellationToken token);
public void Dispose();
}
public class BasicHTTPClient : IHttpClient
{
public BasicHTTPClient() { }
public BasicHTTPClient(string baseUri)
{
BaseAddress = new Uri(baseUri);
_httpClient.BaseAddress = BaseAddress;
}
public BasicHTTPClient(Uri baseUri)
{
BaseAddress = baseUri;
_httpClient.BaseAddress = BaseAddress;
}
public Uri BaseAddress { get; set; }
public HttpRequestHeaders DefaultRequestHeaders => _httpClient.DefaultRequestHeaders;
private readonly HttpClient _httpClient = new HttpClient();
public async Task<HttpResponseMessage> SendAsync(HttpRequestMessage message, HttpCompletionOption option, CancellationToken token)
{
return await _httpClient.SendAsync(message, option, token);
}
public void Dispose()
{
_httpClient.Dispose();
DefaultRequestHeaders.Clear();
BaseAddress = null;
}
}
public class UnityWebRequestHttpClient : IHttpClient
{
public UnityWebRequestHttpClient() { }
public UnityWebRequestHttpClient(string baseUri)
{
BaseAddress = new Uri(baseUri);
}
public UnityWebRequestHttpClient(Uri baseUri)
{
BaseAddress = baseUri;
}
public Uri BaseAddress { get; set; }
public HttpRequestHeaders DefaultRequestHeaders => _httpClient.DefaultRequestHeaders;
private readonly HttpClient _httpClient = new HttpClient();
private void AppendARFHeaders(HttpRequestMessage message, UnityWebRequest webRequest)
{
// Add some ARF headers
foreach (var item in message.Headers)
{
try
{
List<string> li = item.Value as List<string>;
if (item.Key == "token") webRequest.SetRequestHeader(item.Key, li[0].ToString()); // add it
if (item.Key == "sessionID") webRequest.SetRequestHeader(item.Key, li[0].ToString()); // add it
}
catch { } // ignore it
}
}
public async Task<HttpResponseMessage> SendAsync(HttpRequestMessage message, HttpCompletionOption option, CancellationToken token)
{
var content = await (message.Content?.ReadAsStringAsync() ?? Task.FromResult(""));
var webRequest = GetUnityWebRequest(message.Method.Method, message.RequestUri, content);
AppendHeaders(webRequest);
// Add the ARF API headers
AppendARFHeaders(message, webRequest);
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Debug.Log("[HTTP] Request " + webRequest.uri.ToString());
try
{
//SylR
webRequest.SendWebRequest();
while (!webRequest.isDone)
{
if (token.IsCancellationRequested)
{
Debug.Log($"Task '{ message.RequestUri }' cancelled");
token.ThrowIfCancellationRequested();
}
await Task.Yield();
}
//await webRequest
// .SendWebRequest()
// .WithCancellation(cancellationToken: token);
}
catch (Exception)
{
webRequest.Dispose();
throw;
}
Debug.Log("[HTTP] Result: " + webRequest.result.ToString());
var responseMessage = CreateHttpResponseMessage(webRequest);
webRequest.Dispose();
Debug.Log("[HTTP] Response len: " + responseMessage.Content.Headers.ContentLength);
return responseMessage;
}
public void Dispose()
{
_httpClient.Dispose();
DefaultRequestHeaders.Clear();
BaseAddress = null;
}
private UnityWebRequest GetUnityWebRequest(string method, Uri endpoint, string content = "")
{
var requestUri = BaseAddress.AbsoluteUri + endpoint;
var webRequest = UnityWebRequest.Get(requestUri);
webRequest.method = method;
webRequest.disposeUploadHandlerOnDispose = true;
webRequest.disposeDownloadHandlerOnDispose = true;
if (!string.IsNullOrEmpty(content))
{
var data = new System.Text.UTF8Encoding().GetBytes(content);
webRequest.uploadHandler = new UploadHandlerRaw(data);
webRequest.SetRequestHeader("Content-Type", "application/json");
//webRequest.SetRequestHeader("Content-Type", "image/jpeg");
}
return webRequest;
}
private void AppendHeaders(UnityWebRequest webRequest)
{
using var enumerator = DefaultRequestHeaders.GetEnumerator();
while (enumerator.MoveNext())
{
var (key, value) = enumerator.Current;
webRequest.SetRequestHeader(key, value.First());
}
}
private HttpResponseMessage CreateHttpResponseMessage(UnityWebRequest webRequest)
{
var responseContent = webRequest.downloadHandler?.text;
var response = new HttpResponseMessage();
response.Content = new StringContent(responseContent);
response.StatusCode = (HttpStatusCode)webRequest.responseCode;
Dictionary<string, string> headers = webRequest.GetResponseHeaders();
if (headers != null)
{
Debug.Log("[HTTP] Header: " + headers.Count.ToString());
foreach (var h in headers)
{
switch (h.Key.ToLower().Trim())
{
case "content-type":
{
var trimmed = h.Value.ToLower().Split(";").FirstOrDefault();
response.Content.Headers.ContentType = new MediaTypeHeaderValue(trimmed);
break;
}
case "content-length":
response.Content.Headers.ContentLength = long.Parse(h.Value);
break;
default:
if (h.Value == "gzip")
{
// bug???
}
else
response.Headers.Add(h.Key, h.Value);
break;
}
}
}
return response;
}
}
}