File: DataServiceStreamResponse.cs

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//Copyright 2010 Microsoft Corporation
//
//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.


namespace System.Data.Services.Client
{
    using System.Collections.Generic;
    using System.Diagnostics;
    using System.IO;
#if !ASTORIA_LIGHT    
    using System.Net;
#else
    using System.Data.Services.Http;
#endif

    public sealed class DataServiceStreamResponse : IDisposable
    {
        private HttpWebResponse response;

        private Dictionary<string, string> headers;

        internal DataServiceStreamResponse(HttpWebResponse response)
        {
            Debug.Assert(response != null, "Can't create a stream response object from a null response.");
            this.response = response;
        }

        public string ContentType
        {
            get 
            {
                this.CheckDisposed();
                return this.response.Headers[XmlConstants.HttpContentType];
            }
        }

        public string ContentDisposition
        {
            get 
            {
                this.CheckDisposed();
                return this.response.Headers[XmlConstants.HttpContentDisposition];
            }
        }

        public Dictionary<string, string> Headers
        {
            get 
            {
                this.CheckDisposed();
                if (this.headers == null)
                {
                    this.headers = WebUtil.WrapResponseHeaders(this.response);
                }

                return this.headers;
            }
        }

        public Stream Stream
        {
            get
            {
                this.CheckDisposed();
                return this.response.GetResponseStream();
            }
        }

        #region IDisposable Members

        public void Dispose()
        {
            Util.Dispose(ref this.response);
        }

        #endregion

        private void CheckDisposed()
        {
            if (this.response == null)
            {
                Error.ThrowObjectDisposed(this.GetType());
            }
        }
    }
}