Basic HTTP pipelining support

net/http/http_pipelined_stream.h

Index: net/http/http_pipelined_stream.h
diff --git a/net/http/http_pipelined_stream.h b/net/http/http_pipelined_stream.h
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+// 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.
+//
+// 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.
+
+#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 HttpPipelinedConnection;
+class HttpResponseInfo;
+struct HttpRequestInfo;
+class HttpRequestHeaders;
+class HttpStreamParser;
+class IOBuffer;
+class UploadDataStream;
+
+class HttpPipelinedStream : public HttpStream {
+ public:
+  HttpPipelinedStream(HttpPipelinedConnection* pipeline);
+  virtual ~HttpPipelinedStream();
+
+  // HttpStream methods:
+  virtual int InitializeStream(const HttpRequestInfo* request_info,
+                               const BoundNetLog& net_log,
+                               CompletionCallback* callback);
+
+  virtual int SendRequest(const HttpRequestHeaders& headers,
+                          UploadDataStream* request_body,
+                          HttpResponseInfo* response,
+                          CompletionCallback* callback);
+
+  virtual uint64 GetUploadProgress() const;
+
+  virtual int ReadResponseHeaders(CompletionCallback* callback);
+
+  virtual const HttpResponseInfo* GetResponseInfo() const;
+
+  virtual int ReadResponseBody(IOBuffer* buf, int buf_len,
+                               CompletionCallback* callback);
+
+  virtual void Close(bool not_reusable);
+
+  virtual HttpStream* RenewStreamForAuth();
+
+  virtual bool IsResponseBodyComplete() const;
+
+  virtual bool CanFindEndOfResponse() const;
+
+  virtual bool IsMoreDataBuffered() const;
+
+  virtual bool IsConnectionReused() const;
+
+  virtual void SetConnectionReused();
+
+  virtual bool IsConnectionReusable() const;
+
+  virtual void GetSSLInfo(SSLInfo* ssl_info);
+
+  virtual void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info);
+
+  virtual bool IsSpdyHttpStream() const;
+
+  virtual void LogNumRttVsBytesMetrics() const;
+
+ private:
+  HttpPipelinedConnection* pipeline_;
+
+  int pipeline_id_;
+
+  const HttpRequestInfo* request_info_;
+
+  DISALLOW_COPY_AND_ASSIGN(HttpPipelinedStream);
+};
+
+}  // namespace net
+
+#endif  // NET_HTTP_HTTP_PIPELINED_STREAM_H_