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1 // Copyright 2013 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 #ifndef NET_QUIC_QUIC_PACKET_WRITER_H_ | |
6 #define NET_QUIC_QUIC_PACKET_WRITER_H_ | |
7 | |
8 #include "net/base/ip_endpoint.h" | |
9 #include "net/quic/quic_protocol.h" | |
10 | |
11 namespace net { | |
12 | |
13 struct WriteResult; | |
14 | |
15 // An interface between writers and the entity managing the | |
16 // socket (in our case the QuicDispatcher). This allows the Dispatcher to | |
17 // control writes, and manage any writers who end up write blocked. | |
18 class NET_EXPORT_PRIVATE QuicPacketWriter { | |
19 public: | |
20 virtual ~QuicPacketWriter() {} | |
21 | |
22 // Sends the packet out to the peer. If the write succeeded, the result's | |
23 // status is WRITE_STATUS_OK and bytes_written is populated. If the write | |
24 // failed, the result's status is WRITE_STATUS_BLOCKED or WRITE_STATUS_ERROR | |
25 // and error_code is populated. | |
26 virtual WriteResult WritePacket( | |
27 const char* buffer, size_t buf_len, | |
28 const IPAddressNumber& self_address, | |
29 const IPEndPoint& peer_address) = 0; | |
30 | |
31 // Returns true if the writer buffers and subsequently rewrites data | |
32 // when an attempt to write results in the underlying socket becoming | |
33 // write blocked. | |
34 virtual bool IsWriteBlockedDataBuffered() const = 0; | |
35 | |
36 // Returns true if the network socket is not writable. | |
37 virtual bool IsWriteBlocked() const = 0; | |
38 | |
39 // Records that the socket has become writable, for example when an EPOLLOUT | |
40 // is received or an asynchronous write completes. | |
41 virtual void SetWritable() = 0; | |
42 }; | |
43 | |
44 } // namespace net | |
45 | |
46 #endif // NET_QUIC_QUIC_PACKET_WRITER_H_ | |
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