238 lines
8.5 KiB
C#
238 lines
8.5 KiB
C#
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//Copyright (c) Service Stack LLC. All Rights Reserved.
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//License: https://raw.github.com/ServiceStack/ServiceStack/master/license.txt
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using System;
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using System.IO;
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using System.Net;
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using System.Threading.Tasks;
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using System.Collections.Generic;
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using System.Threading;
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using MediaBrowser.Model.Services;
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using ServiceStack.Host;
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namespace ServiceStack
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{
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public static class HttpResponseExtensionsInternal
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{
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public static async Task<bool> WriteToOutputStream(IResponse response, object result)
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{
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var asyncStreamWriter = result as IAsyncStreamWriter;
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if (asyncStreamWriter != null)
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{
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await asyncStreamWriter.WriteToAsync(response.OutputStream, CancellationToken.None).ConfigureAwait(false);
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return true;
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}
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var streamWriter = result as IStreamWriter;
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if (streamWriter != null)
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{
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streamWriter.WriteTo(response.OutputStream);
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return true;
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}
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var stream = result as Stream;
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if (stream != null)
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{
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WriteTo(stream, response.OutputStream);
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return true;
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}
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var bytes = result as byte[];
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if (bytes != null)
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{
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response.ContentType = "application/octet-stream";
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response.SetContentLength(bytes.Length);
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response.OutputStream.Write(bytes, 0, bytes.Length);
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return true;
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}
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return false;
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}
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public static long WriteTo(Stream inStream, Stream outStream)
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{
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var memoryStream = inStream as MemoryStream;
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if (memoryStream != null)
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{
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memoryStream.WriteTo(outStream);
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return memoryStream.Position;
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}
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var data = new byte[4096];
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long total = 0;
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int bytesRead;
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while ((bytesRead = inStream.Read(data, 0, data.Length)) > 0)
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{
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outStream.Write(data, 0, bytesRead);
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total += bytesRead;
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}
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return total;
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}
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/// <summary>
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/// End a ServiceStack Request with no content
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/// </summary>
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public static void EndRequestWithNoContent(this IResponse httpRes)
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{
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if (httpRes.StatusCode == (int)HttpStatusCode.OK)
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{
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httpRes.StatusCode = (int)HttpStatusCode.NoContent;
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}
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httpRes.SetContentLength(0);
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}
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public static Task WriteToResponse(this IResponse httpRes, MediaBrowser.Model.Services.IRequest httpReq, object result)
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{
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if (result == null)
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{
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httpRes.EndRequestWithNoContent();
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return Task.FromResult(true);
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}
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var httpResult = result as IHttpResult;
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if (httpResult != null)
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{
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httpResult.RequestContext = httpReq;
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httpReq.ResponseContentType = httpResult.ContentType ?? httpReq.ResponseContentType;
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var httpResSerializer = ContentTypes.Instance.GetResponseSerializer(httpReq.ResponseContentType);
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return httpRes.WriteToResponse(httpResult, httpResSerializer, httpReq);
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}
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var serializer = ContentTypes.Instance.GetResponseSerializer(httpReq.ResponseContentType);
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return httpRes.WriteToResponse(result, serializer, httpReq);
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}
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private static object GetDto(object response)
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{
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if (response == null) return null;
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var httpResult = response as IHttpResult;
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return httpResult != null ? httpResult.Response : response;
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}
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/// <summary>
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/// Writes to response.
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/// Response headers are customizable by implementing IHasHeaders an returning Dictionary of Http headers.
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/// </summary>
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/// <param name="response">The response.</param>
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/// <param name="result">Whether or not it was implicity handled by ServiceStack's built-in handlers.</param>
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/// <param name="defaultAction">The default action.</param>
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/// <param name="request">The serialization context.</param>
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/// <returns></returns>
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public static async Task WriteToResponse(this IResponse response, object result, Action<IRequest, object, IResponse> defaultAction, MediaBrowser.Model.Services.IRequest request)
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{
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var defaultContentType = request.ResponseContentType;
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if (result == null)
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{
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response.EndRequestWithNoContent();
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return;
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}
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var httpResult = result as IHttpResult;
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if (httpResult != null)
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{
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if (httpResult.RequestContext == null)
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httpResult.RequestContext = request;
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response.Dto = response.Dto ?? GetDto(httpResult);
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response.StatusCode = httpResult.Status;
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response.StatusDescription = httpResult.StatusDescription ?? httpResult.StatusCode.ToString();
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if (string.IsNullOrEmpty(httpResult.ContentType))
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{
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httpResult.ContentType = defaultContentType;
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}
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response.ContentType = httpResult.ContentType;
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if (httpResult.Cookies != null)
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{
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var httpRes = response as IHttpResponse;
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if (httpRes != null)
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{
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foreach (var cookie in httpResult.Cookies)
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{
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httpRes.SetCookie(cookie);
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}
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}
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}
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}
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else
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{
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response.Dto = result;
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}
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/* Mono Error: Exception: Method not found: 'System.Web.HttpResponse.get_Headers' */
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var responseOptions = result as IHasHeaders;
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if (responseOptions != null)
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{
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//Reserving options with keys in the format 'xx.xxx' (No Http headers contain a '.' so its a safe restriction)
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const string reservedOptions = ".";
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foreach (var responseHeaders in responseOptions.Headers)
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{
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if (responseHeaders.Key.Contains(reservedOptions)) continue;
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if (responseHeaders.Key == "Content-Length")
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{
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response.SetContentLength(long.Parse(responseHeaders.Value));
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continue;
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}
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response.AddHeader(responseHeaders.Key, responseHeaders.Value);
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}
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}
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//ContentType='text/html' is the default for a HttpResponse
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//Do not override if another has been set
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if (response.ContentType == null || response.ContentType == "text/html")
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{
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response.ContentType = defaultContentType;
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}
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if (new HashSet<string> { "application/json", }.Contains(response.ContentType))
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{
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response.ContentType += "; charset=utf-8";
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}
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var disposableResult = result as IDisposable;
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var writeToOutputStreamResult = await WriteToOutputStream(response, result).ConfigureAwait(false);
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if (writeToOutputStreamResult)
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{
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response.Flush(); //required for Compression
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if (disposableResult != null) disposableResult.Dispose();
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return;
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}
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if (httpResult != null)
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result = httpResult.Response;
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var responseText = result as string;
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if (responseText != null)
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{
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if (response.ContentType == null || response.ContentType == "text/html")
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response.ContentType = defaultContentType;
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response.Write(responseText);
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return;
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}
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if (defaultAction == null)
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{
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throw new ArgumentNullException("defaultAction", String.Format(
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"As result '{0}' is not a supported responseType, a defaultAction must be supplied",
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(result != null ? result.GetType().GetOperationName() : "")));
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}
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if (result != null)
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defaultAction(request, result, response);
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if (disposableResult != null)
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disposableResult.Dispose();
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}
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}
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}
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