1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
// Copyright (c) 2009 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.
//
// HttpStream is an interface for reading and writing data to an HttpStream that
// keeps the client agnostic of the actual underlying transport layer. This
// provides an abstraction for both a basic http stream as well as http
// pipelining implementations.
//
// NOTE(willchan): This interface is a work in progress. It will most likely
// change, since for a pipelining implementation, the stream needs to contain
// the http parsing code. For symmetry, the writing methods will probably
// contain the code for constructing http requests.
#ifndef NET_HTTP_HTTP_STREAM_H_
#define NET_HTTP_HTTP_STREAM_H_
#include "base/basictypes.h"
#include "net/base/completion_callback.h"
namespace net {
class IOBuffer;
class HttpStream {
public:
HttpStream() {}
virtual ~HttpStream() {}
// Reads data, up to buf_len bytes, from the socket. The number of bytes
// read is returned, or an error is returned upon failure. Zero is returned
// to indicate end-of-file. ERR_IO_PENDING is returned if the operation
// could not be completed synchronously, in which case the result will be
// passed to the callback when available. If the operation is not completed
// immediately, the socket acquires a reference to the provided buffer until
// the callback is invoked or the socket is destroyed.
virtual int Read(IOBuffer* buf,
int buf_len,
CompletionCallback* callback) = 0;
// Writes data, up to buf_len bytes, to the socket. Note: only part of the
// data may be written! The number of bytes written is returned, or an error
// is returned upon failure. ERR_IO_PENDING is returned if the operation
// could not be completed synchronously, in which case the result will be
// passed to the callback when available. If the operation is not completed
// immediately, the socket acquires a reference to the provided buffer until
// the callback is invoked or the socket is destroyed.
// Implementations of this method should not modify the contents of the actual
// buffer that is written to the socket.
virtual int Write(IOBuffer* buf,
int buf_len,
CompletionCallback* callback) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(HttpStream);
};
} // namespace net
#endif // NET_HTTP_HTTP_STREAM_H_
|
