Basic HTTP pipelining support

net/http/http_pipelined_stream.h

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef NET_HTTP_HTTP_PIPELINED_STREAM_H_
+#define NET_HTTP_HTTP_PIPELINED_STREAM_H_
+#pragma once
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "net/http/http_stream.h"
+
+namespace net {
+
+class BoundNetLog;
+class HttpPipelinedConnectionImpl;
+class HttpResponseInfo;
+struct HttpRequestInfo;
+class HttpRequestHeaders;

[mmenke, 2011/08/23 19:05:25]

nit:  Alphabetize.

[James Simonsen, 2011/08/26 22:19:07]

Done.

+class HttpStreamParser;
+class IOBuffer;
+class UploadDataStream;
+
+// HttpPipelinedStream is the pipelined implementation of HttpStream. It has
+// very little code in it. Instead, it serves as the client's interface to the
+// pipelined connection, where all the work happens.
+//
+// In the case of pipelining failures, these functions may return
+// ERR_PIPELINE_EVICTION. In that case, the client should retry the HTTP
+// request without pipelining.
+class HttpPipelinedStream : public HttpStream {
+ public:
+  HttpPipelinedStream(HttpPipelinedConnectionImpl* pipeline,
+                      int pipeline_id);
+  virtual ~HttpPipelinedStream();
+
+  // HttpStream methods:
+  virtual int InitializeStream(const HttpRequestInfo* request_info,
+                               const BoundNetLog& net_log,
+                               CompletionCallback* callback) OVERRIDE;
+
+  virtual int SendRequest(const HttpRequestHeaders& headers,
+                          UploadDataStream* request_body,
+                          HttpResponseInfo* response,
+                          CompletionCallback* callback) OVERRIDE;
+
+  virtual uint64 GetUploadProgress() const OVERRIDE;
+
+  virtual int ReadResponseHeaders(CompletionCallback* callback) OVERRIDE;
+
+  virtual const HttpResponseInfo* GetResponseInfo() const OVERRIDE;
+
+  virtual int ReadResponseBody(IOBuffer* buf, int buf_len,
+                               CompletionCallback* callback) OVERRIDE;
+
+  virtual void Close(bool not_reusable) OVERRIDE;
+
+  virtual HttpStream* RenewStreamForAuth() OVERRIDE;
+
+  virtual bool IsResponseBodyComplete() const OVERRIDE;
+
+  virtual bool CanFindEndOfResponse() const OVERRIDE;
+
+  virtual bool IsMoreDataBuffered() const OVERRIDE;
+
+  virtual bool IsConnectionReused() const OVERRIDE;
+
+  virtual void SetConnectionReused() OVERRIDE;
+
+  virtual bool IsConnectionReusable() const OVERRIDE;
+
+  virtual void GetSSLInfo(SSLInfo* ssl_info) OVERRIDE;
+
+  virtual void GetSSLCertRequestInfo(
+      SSLCertRequestInfo* cert_request_info) OVERRIDE;
+
+  virtual bool IsSpdyHttpStream() const OVERRIDE;
+
+  virtual void LogNumRttVsBytesMetrics() const OVERRIDE;
+
+ private:
+  HttpPipelinedConnectionImpl* pipeline_;
+
+  int pipeline_id_;
+
+  const HttpRequestInfo* request_info_;
+
+  DISALLOW_COPY_AND_ASSIGN(HttpPipelinedStream);
+};
+
+}  // namespace net
+
+#endif  // NET_HTTP_HTTP_PIPELINED_STREAM_H_