blob: ce0e81d36725556b777606439af728b40a7d825e (
plain)
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
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// Copyright (c) 2006-2008 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_PROXY_PROXY_RESOLVER_H_
#define NET_PROXY_PROXY_RESOLVER_H_
#include <string>
#include "base/logging.h"
#include "net/base/completion_callback.h"
class GURL;
namespace net {
class ProxyInfo;
// Interface for "proxy resolvers". A ProxyResolver fills in a list of proxies
// to use for a particular URL. Generally the backend for a ProxyResolver is
// a PAC script, but it doesn't need to be. ProxyResolver can service multiple
// requests at a time.
class ProxyResolver {
public:
// Opaque pointer type, to return a handle to cancel outstanding requests.
typedef void* RequestHandle;
// See |expects_pac_bytes()| for the meaning of |expects_pac_bytes|.
explicit ProxyResolver(bool expects_pac_bytes)
: expects_pac_bytes_(expects_pac_bytes) {}
virtual ~ProxyResolver() {}
// Gets a list of proxy servers to use for |url|. If the request will
// complete asynchronously returns ERR_IO_PENDING and notifies the result
// by running |callback|. If the result code is OK then
// the request was successful and |results| contains the proxy
// resolution information. In the case of asynchronous completion
// |*request| is written to, and can be passed to CancelRequest().
virtual int GetProxyForURL(const GURL& url,
ProxyInfo* results,
CompletionCallback* callback,
RequestHandle* request) = 0;
// Cancels |request|.
virtual void CancelRequest(RequestHandle request) = 0;
// The PAC script backend can be specified to the ProxyResolver either via
// URL, or via the javascript text itself. If |expects_pac_bytes| is true,
// then PAC scripts should be specified using SetPacScriptByData(). Otherwise
// they should be specified using SetPacScriptByUrl().
bool expects_pac_bytes() const { return expects_pac_bytes_; }
// Sets the PAC script backend to use for this proxy resolver (by URL).
void SetPacScriptByUrl(const GURL& pac_url) {
DCHECK(!expects_pac_bytes());
SetPacScriptByUrlInternal(pac_url);
}
// Sets the PAC script backend to use for this proxy resolver (by contents).
void SetPacScriptByData(const std::string& bytes) {
DCHECK(expects_pac_bytes());
SetPacScriptByDataInternal(bytes);
}
private:
// Called to set the PAC script backend to use. If |pac_url| is invalid,
// this is a request to use WPAD (auto detect).
virtual void SetPacScriptByUrlInternal(const GURL& pac_url) {
NOTREACHED();
}
// Called to set the PAC script backend to use. |bytes| may be empty if the
// fetch failed, or if the fetch returned no content.
virtual void SetPacScriptByDataInternal(const std::string& bytes) {
NOTREACHED();
}
const bool expects_pac_bytes_;
DISALLOW_COPY_AND_ASSIGN(ProxyResolver);
};
} // namespace net
#endif // NET_PROXY_PROXY_RESOLVER_H_
|
