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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 // |
| 5 // Manages all of the pipelining state for specific host with active pipelined |
| 6 // HTTP requests. Manages connection jobs, constructs pipelined streams, and |
| 7 // assigns requests to the least loaded pipelined connection. |
| 8 |
| 9 #ifndef NET_HTTP_HTTP_PIPELINED_HOST_H_ |
| 10 #define NET_HTTP_HTTP_PIPELINED_HOST_H_ |
| 11 #pragma once |
| 12 |
| 13 #include <set> |
| 14 #include <string> |
| 15 |
| 16 #include "net/base/host_port_pair.h" |
| 17 |
| 18 namespace net { |
| 19 |
| 20 class BoundNetLog; |
| 21 class ClientSocketHandle; |
| 22 class HttpPipelinedConnection; |
| 23 class HttpPipelinedHostPool; |
| 24 class ProxyInfo; |
| 25 class SSLConfig; |
| 26 |
| 27 class HttpPipelinedHost { |
| 28 public: |
| 29 HttpPipelinedHost(HttpPipelinedHostPool* pool, |
| 30 const HostPortPair& origin); |
| 31 ~HttpPipelinedHost(); |
| 32 |
| 33 HttpPipelinedConnection* CreateNewPipeline(ClientSocketHandle* connection, |
| 34 const SSLConfig& used_ssl_config, |
| 35 const ProxyInfo& used_proxy_info, |
| 36 const BoundNetLog& net_log, |
| 37 bool was_npn_negotiated); |
| 38 |
| 39 HttpPipelinedConnection* FindAvailablePipeline(); |
| 40 |
| 41 // Callbacks for HttpPipelinedConnection. |
| 42 |
| 43 // Called when a pipelined connection completes a request. Adds a pending |
| 44 // request to the pipeline if the pipeline is still usable. |
| 45 void OnPipelineHasCapacity(HttpPipelinedConnection* pipeline); |
| 46 |
| 47 const HostPortPair& origin() const { return origin_; } |
| 48 |
| 49 private: |
| 50 // Called when a pipeline is empty and there are no pending requests. Closes |
| 51 // the connection. |
| 52 void OnPipelineEmpty(HttpPipelinedConnection* pipeline); |
| 53 |
| 54 // Adds the next pending request to the pipeline if it's still usuable. |
| 55 void AddRequestToPipeline(HttpPipelinedConnection* connection); |
| 56 |
| 57 int max_pipeline_depth() const { return 3; } |
| 58 |
| 59 HttpPipelinedHostPool* pool_; |
| 60 const HostPortPair origin_; |
| 61 std::set<HttpPipelinedConnection*> pipelines_; |
| 62 |
| 63 DISALLOW_COPY_AND_ASSIGN(HttpPipelinedHost); |
| 64 }; |
| 65 |
| 66 } // namespace net |
| 67 |
| 68 #endif // NET_HTTP_HTTP_PIPELINED_HOST_H_ |
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