| // Licensed to the Apache Software Foundation(ASF) under one |
| // or more contributor license agreements.See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership.The ASF licenses this file |
| // to you 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. |
| |
| using System; |
| using System.Collections.Generic; |
| using System.IO; |
| using System.Linq; |
| using System.Net.Http; |
| using System.Net.Http.Headers; |
| using System.Security.Cryptography.X509Certificates; |
| using System.Threading; |
| using System.Threading.Tasks; |
| |
| namespace Thrift.Transports.Client |
| { |
| // ReSharper disable once InconsistentNaming |
| public class THttpClientTransport : TClientTransport |
| { |
| private readonly X509Certificate[] _certificates; |
| private readonly Uri _uri; |
| |
| // Timeouts in milliseconds |
| private int _connectTimeout = 30000; |
| private HttpClient _httpClient; |
| private Stream _inputStream; |
| |
| private bool _isDisposed; |
| private MemoryStream _outputStream = new MemoryStream(); |
| |
| public THttpClientTransport(Uri u, IDictionary<string, string> customHeaders) |
| : this(u, Enumerable.Empty<X509Certificate>(), customHeaders) |
| { |
| } |
| |
| public THttpClientTransport(Uri u, IEnumerable<X509Certificate> certificates, |
| IDictionary<string, string> customHeaders) |
| { |
| _uri = u; |
| _certificates = (certificates ?? Enumerable.Empty<X509Certificate>()).ToArray(); |
| CustomHeaders = customHeaders; |
| |
| // due to current bug with performance of Dispose in netcore https://github.com/dotnet/corefx/issues/8809 |
| // this can be switched to default way (create client->use->dispose per flush) later |
| _httpClient = CreateClient(); |
| } |
| |
| public IDictionary<string, string> CustomHeaders { get; } |
| |
| public int ConnectTimeout |
| { |
| set { _connectTimeout = value; } |
| } |
| |
| public override bool IsOpen => true; |
| |
| public override async Task OpenAsync(CancellationToken cancellationToken) |
| { |
| if (cancellationToken.IsCancellationRequested) |
| { |
| await Task.FromCanceled(cancellationToken); |
| } |
| } |
| |
| public override void Close() |
| { |
| if (_inputStream != null) |
| { |
| _inputStream.Dispose(); |
| _inputStream = null; |
| } |
| |
| if (_outputStream != null) |
| { |
| _outputStream.Dispose(); |
| _outputStream = null; |
| } |
| |
| if (_httpClient != null) |
| { |
| _httpClient.Dispose(); |
| _httpClient = null; |
| } |
| } |
| |
| public override async Task<int> ReadAsync(byte[] buffer, int offset, int length, |
| CancellationToken cancellationToken) |
| { |
| if (cancellationToken.IsCancellationRequested) |
| { |
| return await Task.FromCanceled<int>(cancellationToken); |
| } |
| |
| if (_inputStream == null) |
| { |
| throw new TTransportException(TTransportException.ExceptionType.NotOpen, "No request has been sent"); |
| } |
| |
| try |
| { |
| var ret = await _inputStream.ReadAsync(buffer, offset, length, cancellationToken); |
| |
| if (ret == -1) |
| { |
| throw new TTransportException(TTransportException.ExceptionType.EndOfFile, "No more data available"); |
| } |
| |
| return ret; |
| } |
| catch (IOException iox) |
| { |
| throw new TTransportException(TTransportException.ExceptionType.Unknown, iox.ToString()); |
| } |
| } |
| |
| public override async Task WriteAsync(byte[] buffer, int offset, int length, CancellationToken cancellationToken) |
| { |
| if (cancellationToken.IsCancellationRequested) |
| { |
| await Task.FromCanceled(cancellationToken); |
| } |
| |
| await _outputStream.WriteAsync(buffer, offset, length, cancellationToken); |
| } |
| |
| private HttpClient CreateClient() |
| { |
| var handler = new HttpClientHandler(); |
| handler.ClientCertificates.AddRange(_certificates); |
| |
| var httpClient = new HttpClient(handler); |
| |
| if (_connectTimeout > 0) |
| { |
| httpClient.Timeout = TimeSpan.FromSeconds(_connectTimeout); |
| } |
| |
| httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/x-thrift")); |
| httpClient.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue("THttpClientTransport", "1.0.0")); |
| |
| if (CustomHeaders != null) |
| { |
| foreach (var item in CustomHeaders) |
| { |
| httpClient.DefaultRequestHeaders.Add(item.Key, item.Value); |
| } |
| } |
| |
| return httpClient; |
| } |
| |
| public override async Task FlushAsync(CancellationToken cancellationToken) |
| { |
| try |
| { |
| try |
| { |
| if (_outputStream.CanSeek) |
| { |
| _outputStream.Seek(0, SeekOrigin.Begin); |
| } |
| |
| using (var outStream = new StreamContent(_outputStream)) |
| { |
| var msg = await _httpClient.PostAsync(_uri, outStream, cancellationToken); |
| |
| msg.EnsureSuccessStatusCode(); |
| |
| if (_inputStream != null) |
| { |
| _inputStream.Dispose(); |
| _inputStream = null; |
| } |
| |
| _inputStream = await msg.Content.ReadAsStreamAsync(); |
| if (_inputStream.CanSeek) |
| { |
| _inputStream.Seek(0, SeekOrigin.Begin); |
| } |
| } |
| } |
| catch (IOException iox) |
| { |
| throw new TTransportException(TTransportException.ExceptionType.Unknown, iox.ToString()); |
| } |
| catch (HttpRequestException wx) |
| { |
| throw new TTransportException(TTransportException.ExceptionType.Unknown, |
| "Couldn't connect to server: " + wx); |
| } |
| } |
| finally |
| { |
| _outputStream = new MemoryStream(); |
| } |
| } |
| |
| // IDisposable |
| protected override void Dispose(bool disposing) |
| { |
| if (!_isDisposed) |
| { |
| if (disposing) |
| { |
| _inputStream?.Dispose(); |
| _outputStream?.Dispose(); |
| _httpClient?.Dispose(); |
| } |
| } |
| _isDisposed = true; |
| } |
| } |
| } |