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using System;
using System.IO;
using System.Net;
using System.Text;
using ServiceStack.Common.Web;
using ServiceStack.Logging;
using ServiceStack.Service;
using ServiceStack.ServiceHost;
using ServiceStack.Text;
namespace ServiceStack.ServiceClient.Web
{
#if !SILVERLIGHT
/**
* Need to provide async request options
* http://msdn.microsoft.com/en-us/library/86wf6409(VS.71).aspx
*/
public abstract class ServiceClientBase
: IServiceClient, IRestClient
{
private static readonly ILog log = LogManager.GetLogger(typeof(ServiceClientBase));
/// <summary>
/// The request filter is called before any request.
/// This request filter is executed globally.
/// </summary>
public static Action<HttpWebRequest> HttpWebRequestFilter { get; set; }
public const string DefaultHttpMethod = "POST";
readonly AsyncServiceClient asyncClient;
protected ServiceClientBase()
{
this.StoreCookies = true;
this.HttpMethod = DefaultHttpMethod;
asyncClient = new AsyncServiceClient {
ContentType = ContentType,
StreamSerializer = SerializeToStream,
StreamDeserializer = StreamDeserializer
};
}
protected ServiceClientBase(string syncReplyBaseUri, string asyncOneWayBaseUri)
: this()
{
this.SyncReplyBaseUri = syncReplyBaseUri;
this.AsyncOneWayBaseUri = asyncOneWayBaseUri;
}
public void SetBaseUri(string baseUri, string format)
{
this.BaseUri = baseUri;
this.SyncReplyBaseUri = baseUri.WithTrailingSlash() + format + "/syncreply/";
this.AsyncOneWayBaseUri = baseUri.WithTrailingSlash() + format + "/asynconeway/";
}
/// <summary>
/// The user name for basic authentication
/// </summary>
public string UserName { get; set; }
/// <summary>
/// The password for basic authentication
/// </summary>
public string Password { get; set; }
/// <summary>
/// Sets the username and the password for basic authentication.
/// </summary>
public void SetCredentials(string userName, string password)
{
this.UserName = userName;
this.Password = password;
}
public string BaseUri { get; set; }
public string SyncReplyBaseUri { get; set; }
public string AsyncOneWayBaseUri { get; set; }
private TimeSpan? timeout;
public TimeSpan? Timeout
{
get { return this.timeout; }
set
{
this.timeout = value;
this.asyncClient.Timeout = value;
}
}
public abstract string ContentType { get; }
public string HttpMethod { get; set; }
public IWebProxy Proxy { get; set; }
private ICredentials credentials;
/// <summary>
/// Gets or sets authentication information for the request.
/// Warning: It's recommened to use <see cref="UserName"/> and <see cref="Password"/> for basic auth.
/// This property is only used for IIS level authentication.
/// </summary>
public ICredentials Credentials
{
set
{
this.credentials = value;
this.asyncClient.Credentials = value;
}
}
/// <summary>
/// Determines if the basic auth header should be sent with every request.
/// By default, the basic auth header is only sent when "401 Unauthorized" is returned.
/// </summary>
public bool AlwaysSendBasicAuthHeader { get; set; }
/// <summary>
/// Specifies if cookies should be stored
/// </summary>
public bool StoreCookies { get; set; }
public CookieContainer CookieContainer { get; set; }
/// <summary>
/// The request filter is called before any request.
/// This request filter only works with the instance where it was set (not global).
/// </summary>
public Action<HttpWebRequest> LocalHttpWebRequestFilter { get; set; }
public abstract void SerializeToStream(IRequestContext requestContext, object request, Stream stream);
public abstract T DeserializeFromStream<T>(Stream stream);
public abstract StreamDeserializerDelegate StreamDeserializer { get; }
public virtual TResponse Send<TResponse>(object request)
{
var requestUri = this.SyncReplyBaseUri.WithTrailingSlash() + request.GetType().Name;
var client = SendRequest(requestUri, request);
try
{
using (var responseStream = client.GetResponse().GetResponseStream())
{
var response = DeserializeFromStream<TResponse>(responseStream);
return response;
}
}
catch (Exception ex)
{
TResponse response;
if (!HandleResponseException(ex, Web.HttpMethod.Post, requestUri, request, out response))
{
throw;
}
return response;
}
}
private bool HandleResponseException<TResponse>(Exception ex, string httpMethod, string requestUri, object request, out TResponse response)
{
try
{
if (WebRequestUtils.ShouldAuthenticate(ex, this.UserName, this.Password))
{
var client = SendRequest(httpMethod, requestUri, request);
client.AddBasicAuth(this.UserName, this.Password);
try
{
using (var responseStream = client.GetResponse().GetResponseStream())
{
response = DeserializeFromStream<TResponse>(responseStream);
return true;
}
}
catch { /* Ignore deserializing error exceptions */ }
}
}
catch (Exception subEx)
{
// Since we are effectively re-executing the call,
// the new exception should be shown to the caller rather
// than the old one.
// The new exception is either this one or the one thrown
// by the following method.
HandleResponseException<TResponse>(subEx, requestUri);
throw;
}
// If this doesn't throw, the calling method
// should rethrow the original exception upon
// return value of false.
HandleResponseException<TResponse>(ex, requestUri);
response = default(TResponse);
return false;
}
private void HandleResponseException<TResponse>(Exception ex, string requestUri)
{
var webEx = ex as WebException;
if (webEx != null && webEx.Status == WebExceptionStatus.ProtocolError)
{
var errorResponse = ((HttpWebResponse)webEx.Response);
log.Error(webEx);
log.DebugFormat("Status Code : {0}", errorResponse.StatusCode);
log.DebugFormat("Status Description : {0}", errorResponse.StatusDescription);
var serviceEx = new WebServiceException(errorResponse.StatusDescription) {
StatusCode = (int)errorResponse.StatusCode,
StatusDescription = errorResponse.StatusDescription,
};
try
{
using (var stream = errorResponse.GetResponseStream())
{
serviceEx.ResponseDto = DeserializeFromStream<TResponse>(stream);
}
}
catch (Exception innerEx)
{
// Oh, well, we tried
throw new WebServiceException(errorResponse.StatusDescription, innerEx) {
StatusCode = (int)errorResponse.StatusCode,
StatusDescription = errorResponse.StatusDescription,
};
}
//Escape deserialize exception handling and throw here
throw serviceEx;
}
var authEx = ex as AuthenticationException;
if (authEx != null)
{
throw WebRequestUtils.CreateCustomException(requestUri, authEx);
}
}
private WebRequest SendRequest(string requestUri, object request)
{
return SendRequest(HttpMethod ?? DefaultHttpMethod, requestUri, request);
}
private WebRequest SendRequest(string httpMethod, string requestUri, object request)
{
if (httpMethod == null)
throw new ArgumentNullException("httpMethod");
if (httpMethod == Web.HttpMethod.Get && request != null)
{
var queryString = QueryStringSerializer.SerializeToString(request);
if (!string.IsNullOrEmpty(queryString))
{
requestUri += "?" + queryString;
}
}
var client = (HttpWebRequest)WebRequest.Create(requestUri);
try
{
client.Accept = ContentType;
client.Method = httpMethod;
if (Proxy != null) client.Proxy = Proxy;
if (this.Timeout.HasValue) client.Timeout = (int)this.Timeout.Value.TotalMilliseconds;
if (this.credentials != null) client.Credentials = this.credentials;
if (this.AlwaysSendBasicAuthHeader) client.AddBasicAuth(this.UserName, this.Password);
if (StoreCookies)
{
if (CookieContainer == null)
CookieContainer = new CookieContainer();
client.CookieContainer = CookieContainer;
}
if (this.LocalHttpWebRequestFilter != null)
LocalHttpWebRequestFilter(client);
if (HttpWebRequestFilter != null)
HttpWebRequestFilter(client);
if (httpMethod != Web.HttpMethod.Get
&& httpMethod != Web.HttpMethod.Delete)
{
client.ContentType = ContentType;
using (var requestStream = client.GetRequestStream())
{
SerializeToStream(null, request, requestStream);
}
}
}
catch (AuthenticationException ex)
{
throw WebRequestUtils.CreateCustomException(requestUri, ex) ?? ex;
}
return client;
}
private string GetUrl(string relativeOrAbsoluteUrl)
{
return relativeOrAbsoluteUrl.StartsWith("http:")
|| relativeOrAbsoluteUrl.StartsWith("https:")
? relativeOrAbsoluteUrl
: this.BaseUri + relativeOrAbsoluteUrl;
}
private byte[] DownloadBytes(string requestUri, object request)
{
var webRequest = SendRequest(requestUri, request);
using (var response = webRequest.GetResponse())
using (var stream = response.GetResponseStream())
return stream.ReadFully();
}
public void SendOneWay(object request)
{
var requestUri = this.AsyncOneWayBaseUri.WithTrailingSlash() + request.GetType().Name;
DownloadBytes(requestUri, request);
}
public void SendOneWay(string relativeOrAbsoluteUrl, object request)
{
var requestUri = GetUrl(relativeOrAbsoluteUrl);
DownloadBytes(requestUri, request);
}
public void SendAsync<TResponse>(object request, Action<TResponse> onSuccess, Action<TResponse, Exception> onError)
{
var requestUri = this.SyncReplyBaseUri.WithTrailingSlash() + request.GetType().Name;
asyncClient.SendAsync(Web.HttpMethod.Post, requestUri, request, onSuccess, onError);
}
public void GetAsync<TResponse>(string relativeOrAbsoluteUrl, Action<TResponse> onSuccess, Action<TResponse, Exception> onError)
{
asyncClient.SendAsync(Web.HttpMethod.Get, GetUrl(relativeOrAbsoluteUrl), null, onSuccess, onError);
}
public void DeleteAsync<TResponse>(string relativeOrAbsoluteUrl, Action<TResponse> onSuccess, Action<TResponse, Exception> onError)
{
asyncClient.SendAsync(Web.HttpMethod.Delete, GetUrl(relativeOrAbsoluteUrl), null, onSuccess, onError);
}
public void PostAsync<TResponse>(string relativeOrAbsoluteUrl, object request, Action<TResponse> onSuccess, Action<TResponse, Exception> onError)
{
asyncClient.SendAsync(Web.HttpMethod.Post, GetUrl(relativeOrAbsoluteUrl), request, onSuccess, onError);
}
public void PutAsync<TResponse>(string relativeOrAbsoluteUrl, object request, Action<TResponse> onSuccess, Action<TResponse, Exception> onError)
{
asyncClient.SendAsync(Web.HttpMethod.Put, GetUrl(relativeOrAbsoluteUrl), request, onSuccess, onError);
}
public virtual TResponse Send<TResponse>(string httpMethod, string relativeOrAbsoluteUrl, object request)
{
var requestUri = GetUrl(relativeOrAbsoluteUrl);
var client = SendRequest(httpMethod, requestUri, request);
try
{
using (var responseStream = client.GetResponse().GetResponseStream())
{
var response = DeserializeFromStream<TResponse>(responseStream);
return response;
}
}
catch (Exception ex)
{
TResponse response;
if (!HandleResponseException(ex, httpMethod, requestUri, request, out response))
{
throw;
}
return response;
}
}
public TResponse Get<TResponse>(string relativeOrAbsoluteUrl)
{
return Send<TResponse>(Web.HttpMethod.Get, relativeOrAbsoluteUrl, null);
}
public TResponse Delete<TResponse>(string relativeOrAbsoluteUrl)
{
return Send<TResponse>(Web.HttpMethod.Delete, relativeOrAbsoluteUrl, null);
}
public TResponse Post<TResponse>(string relativeOrAbsoluteUrl, object request)
{
return Send<TResponse>(Web.HttpMethod.Post, relativeOrAbsoluteUrl, request);
}
public TResponse Put<TResponse>(string relativeOrAbsoluteUrl, object request)
{
return Send<TResponse>(Web.HttpMethod.Put, relativeOrAbsoluteUrl, request);
}
public TResponse PostFile<TResponse>(string relativeOrAbsoluteUrl, FileInfo fileToUpload, string mimeType)
{
var requestUri = GetUrl(relativeOrAbsoluteUrl);
var webRequest = (HttpWebRequest)WebRequest.Create(requestUri);
webRequest.Method = Web.HttpMethod.Post;
webRequest.Accept = ContentType;
if (Proxy != null) webRequest.Proxy = Proxy;
try
{
if (HttpWebRequestFilter != null)
{
HttpWebRequestFilter(webRequest);
}
var webResponse = webRequest.UploadFile(fileToUpload, mimeType);
using (var responseStream = webResponse.GetResponseStream())
{
var response = DeserializeFromStream<TResponse>(responseStream);
return response;
}
}
catch (Exception ex)
{
HandleResponseException<TResponse>(ex, requestUri);
throw;
}
}
public TResponse PostFile<TResponse>(string relativeOrAbsoluteUrl, Stream fileToUpload, string fileName, string mimeType)
{
var requestUri = GetUrl(relativeOrAbsoluteUrl);
var webRequest = (HttpWebRequest)WebRequest.Create(requestUri);
webRequest.Method = Web.HttpMethod.Post;
webRequest.Accept = ContentType;
if (Proxy != null) webRequest.Proxy = Proxy;
try
{
if (HttpWebRequestFilter != null)
{
HttpWebRequestFilter(webRequest);
}
webRequest.UploadFile(fileToUpload, fileName, mimeType);
var webResponse = webRequest.GetResponse();
using (var responseStream = webResponse.GetResponseStream())
{
var response = DeserializeFromStream<TResponse>(responseStream);
return response;
}
}
catch (Exception ex)
{
HandleResponseException<TResponse>(ex, requestUri);
throw;
}
}
public void Dispose() { }
}
#else
public abstract class ServiceClientBase
: IServiceClient, IRestClient
{
private static readonly ILog log = LogManager.GetLogger(typeof(ServiceClientBase));
/// <summary>
/// The request filter is called before any request.
/// This request filter is executed globally.
/// </summary>
public static Action<HttpWebRequest> HttpWebRequestFilter { get; set; }
public const string DefaultHttpMethod = "POST";
readonly AsyncServiceClient asyncClient;
protected ServiceClientBase()
{
this.StoreCookies = true;
this.HttpMethod = DefaultHttpMethod;
asyncClient = new AsyncServiceClient
{
ContentType = ContentType,
StreamSerializer = SerializeToStream,
StreamDeserializer = StreamDeserializer
};
}
protected ServiceClientBase(string syncReplyBaseUri, string asyncOneWayBaseUri)
: this()
{
this.SyncReplyBaseUri = syncReplyBaseUri;
this.AsyncOneWayBaseUri = asyncOneWayBaseUri;
}
public void SetBaseUri(string baseUri, string format)
{
this.BaseUri = baseUri;
this.SyncReplyBaseUri = baseUri.WithTrailingSlash() + format + "/syncreply/";
this.AsyncOneWayBaseUri = baseUri.WithTrailingSlash() + format + "/asynconeway/";
}
/// <summary>
/// The user name for basic authentication
/// </summary>
public string UserName { get; set; }
/// <summary>
/// The password for basic authentication
/// </summary>
public string Password { get; set; }
/// <summary>
/// Sets the username and the password for basic authentication.
/// </summary>
public void SetCredentials(string userName, string password)
{
this.UserName = userName;
this.Password = password;
}
public string BaseUri { get; set; }
public string SyncReplyBaseUri { get; set; }
public string AsyncOneWayBaseUri { get; set; }
private TimeSpan? timeout;
public TimeSpan? Timeout
{
get { return this.timeout; }
set
{
this.timeout = value;
this.asyncClient.Timeout = value;
}
}
public abstract string ContentType { get; }
public string HttpMethod { get; set; }
//public IWebProxy Proxy { get; set; }
private ICredentials credentials;
/// <summary>
/// Gets or sets authentication information for the request.
/// Warning: It's recommened to use <see cref="UserName"/> and <see cref="Password"/> for basic auth.
/// This property is only used for IIS level authentication.
/// </summary>
public ICredentials Credentials
{
set
{
this.credentials = value;
this.asyncClient.Credentials = value;
}
}
/// <summary>
/// Determines if the basic auth header should be sent with every request.
/// By default, the basic auth header is only sent when "401 Unauthorized" is returned.
/// </summary>
public bool AlwaysSendBasicAuthHeader { get; set; }
/// <summary>
/// Specifies if cookies should be stored
/// </summary>
public bool StoreCookies { get; set; }
public CookieContainer CookieContainer { get; set; }
/// <summary>
/// The request filter is called before any request.
/// This request filter only works with the instance where it was set (not global).
/// </summary>
public Action<HttpWebRequest> LocalHttpWebRequestFilter { get; set; }
public abstract void SerializeToStream(IRequestContext requestContext, object request, Stream stream);
public abstract T DeserializeFromStream<T>(Stream stream);
public abstract StreamDeserializerDelegate StreamDeserializer { get; }
public void Dispose() { }
/*
private bool HandleResponseException<TResponse>(Exception ex, string httpMethod, string requestUri, object request, out TResponse response)
{
try
{
if (WebRequestUtils.ShouldAuthenticate(ex, this.UserName, this.Password))
{
var client = SendRequest(httpMethod, requestUri, request);
client.AddBasicAuth(this.UserName, this.Password);
try
{
using (var responseStream = client.GetResponse().GetResponseStream())
{
response = DeserializeFromStream<TResponse>(responseStream);
return true;
}
}
catch {
// Ignore deserializing error exceptions
}
}
}
catch (Exception subEx)
{
// Since we are effectively re-executing the call,
// the new exception should be shown to the caller rather
// than the old one.
// The new exception is either this one or the one thrown
// by the following method.
HandleResponseException<TResponse>(subEx, requestUri);
throw;
}
// If this doesn't throw, the calling method
// should rethrow the original exception upon
// return value of false.
HandleResponseException<TResponse>(ex, requestUri);
response = default(TResponse);
return false;
}
private void HandleResponseException<TResponse>(Exception ex, string requestUri)
{
var webEx = ex as WebException;
if (webEx != null
// && webEx.Status == WebExceptionStatus.ProtocolError
)
{
var errorResponse = ((HttpWebResponse)webEx.Response);
log.Error(webEx);
log.DebugFormat("Status Code : {0}", errorResponse.StatusCode);
log.DebugFormat("Status Description : {0}", errorResponse.StatusDescription);
var serviceEx = new WebServiceException(errorResponse.StatusDescription)
{
StatusCode = (int)errorResponse.StatusCode,
StatusDescription = errorResponse.StatusDescription,
};
try
{
using (var stream = errorResponse.GetResponseStream())
{
serviceEx.ResponseDto = DeserializeFromStream<TResponse>(stream);
}
}
catch (Exception innerEx)
{
// Oh, well, we tried
throw new WebServiceException(errorResponse.StatusDescription, innerEx)
{
StatusCode = (int)errorResponse.StatusCode,
StatusDescription = errorResponse.StatusDescription,
};
}
//Escape deserialize exception handling and throw here
throw serviceEx;
}
var authEx = ex as AuthenticationException;
if (authEx != null)
{
throw WebRequestUtils.CreateCustomException(requestUri, authEx);
}
}
*/
private void SendRequest(string requestUri, object request, Action<WebRequest> callback)
{
var isHttpGet = HttpMethod != null && HttpMethod.ToUpper() == "GET";
if (isHttpGet)
{
var queryString = QueryStringSerializer.SerializeToString(request);
if (!string.IsNullOrEmpty(queryString))
{
requestUri += "?" + queryString;
}
}
SendRequest(HttpMethod ?? DefaultHttpMethod, requestUri, request, callback);
}
private void SendRequest(string httpMethod, string requestUri, object request, Action<WebRequest> callback)
{
if (httpMethod == null)
throw new ArgumentNullException("httpMethod");
var client = (HttpWebRequest)WebRequest.Create(requestUri);
try
{
client.Accept = ContentType;
client.Method = httpMethod;
if (this.credentials != null) client.Credentials = this.credentials;
if (this.AlwaysSendBasicAuthHeader) client.AddBasicAuth(this.UserName, this.Password);
if (StoreCookies)
{
if (CookieContainer == null)
CookieContainer = new CookieContainer();
client.CookieContainer = CookieContainer;
}
if (this.LocalHttpWebRequestFilter != null)
LocalHttpWebRequestFilter(client);
if (HttpWebRequestFilter != null)
HttpWebRequestFilter(client);
if (httpMethod != Web.HttpMethod.Get
&& httpMethod != Web.HttpMethod.Delete)
{
client.ContentType = ContentType;
client.BeginGetRequestStream(delegate(IAsyncResult target)
{
var webReq = (HttpWebRequest)target.AsyncState;
var requestStream = webReq.EndGetRequestStream(target);
SerializeToStream(null, request, requestStream);
callback(client);
}, null);
}
}
catch (AuthenticationException ex)
{
throw WebRequestUtils.CreateCustomException(requestUri, ex) ?? ex;
}
}
private string GetUrl(string relativeOrAbsoluteUrl)
{
return relativeOrAbsoluteUrl.StartsWith("http:")
|| relativeOrAbsoluteUrl.StartsWith("https:")
? relativeOrAbsoluteUrl
: this.BaseUri + relativeOrAbsoluteUrl;
}
private void DownloadBytes(string requestUri, object request, Action<byte[]> callback = null)
{
SendRequest(requestUri, request, webRequest => webRequest.BeginGetResponse(delegate(IAsyncResult result)
{
var webReq = (HttpWebRequest)result.AsyncState;
var response = (HttpWebResponse)webReq.EndGetResponse(result);
using (var stream = response.GetResponseStream())
{
var bytes = stream.ReadFully();
if (callback != null)
{
callback(bytes);
}
}
}, null));
}
public void SendOneWay(object request)
{
var requestUri = this.AsyncOneWayBaseUri.WithTrailingSlash() + request.GetType().Name;
DownloadBytes(requestUri, request);
}
public void SendOneWay(string relativeOrAbsoluteUrl, object request)
{
var requestUri = GetUrl(relativeOrAbsoluteUrl);
DownloadBytes(requestUri, request);
}
public void SendAsync<TResponse>(object request, Action<TResponse> onSuccess, Action<TResponse, Exception> onError)
{
var requestUri = this.SyncReplyBaseUri.WithTrailingSlash() + request.GetType().Name;
asyncClient.SendAsync(Web.HttpMethod.Post, requestUri, request, onSuccess, onError);
}
public void GetAsync<TResponse>(string relativeOrAbsoluteUrl, Action<TResponse> onSuccess, Action<TResponse, Exception> onError)
{
asyncClient.SendAsync(Web.HttpMethod.Get, GetUrl(relativeOrAbsoluteUrl), null, onSuccess, onError);
}
public void DeleteAsync<TResponse>(string relativeOrAbsoluteUrl, Action<TResponse> onSuccess, Action<TResponse, Exception> onError)
{
asyncClient.SendAsync(Web.HttpMethod.Delete, GetUrl(relativeOrAbsoluteUrl), null, onSuccess, onError);
}
public void PostAsync<TResponse>(string relativeOrAbsoluteUrl, object request, Action<TResponse> onSuccess, Action<TResponse, Exception> onError)
{
asyncClient.SendAsync(Web.HttpMethod.Post, GetUrl(relativeOrAbsoluteUrl), request, onSuccess, onError);
}
public void PutAsync<TResponse>(string relativeOrAbsoluteUrl, object request, Action<TResponse> onSuccess, Action<TResponse, Exception> onError)
{
asyncClient.SendAsync(Web.HttpMethod.Put, GetUrl(relativeOrAbsoluteUrl), request, onSuccess, onError);
}
public TResponse Send<TResponse>(object request)
{
throw new NotImplementedException();
}
public TResponse Get<TResponse>(string relativeOrAbsoluteUrl)
{
throw new NotImplementedException();
}
public TResponse Delete<TResponse>(string relativeOrAbsoluteUrl)
{
throw new NotImplementedException();
}
public TResponse Post<TResponse>(string relativeOrAbsoluteUrl, object request)
{
throw new NotImplementedException();
}
public TResponse Put<TResponse>(string relativeOrAbsoluteUrl, object request)
{
throw new NotImplementedException();
}
TResponse IRestClient.PostFile<TResponse>(string relativeOrAbsoluteUrl, FileInfo fileToUpload, string mimeType)
{
throw new NotImplementedException();
}
TResponse IReplyClient.PostFile<TResponse>(string relativeOrAbsoluteUrl, FileInfo fileToUpload, string mimeType)
{
throw new NotImplementedException();
}
public TResponse PostFile<TResponse>(string relativeOrAbsoluteUrl, Stream fileToUpload, string fileName, string mimeType)
{
throw new NotImplementedException();
}
}
#endif
}