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Side by Side Diff: net/proxy/proxy_script_fetcher.h

Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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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 // ProxyScriptFetcher is an async interface for fetching a proxy auto config
6 // script. It is specific to fetching a PAC script; enforces timeout, max-size,
7 // status code.
8
9 #ifndef NET_PROXY_PROXY_SCRIPT_FETCHER_H_
10 #define NET_PROXY_PROXY_SCRIPT_FETCHER_H_
11
12 #include "base/strings/string16.h"
13 #include "net/base/completion_callback.h"
14 #include "net/base/net_export.h"
15
16 class GURL;
17
18 namespace net {
19
20 class URLRequestContext;
21
22 // Interface for downloading a PAC script. Implementations can enforce
23 // timeouts, maximum size constraints, content encoding, etc..
24 class NET_EXPORT_PRIVATE ProxyScriptFetcher {
25 public:
26 // Destruction should cancel any outstanding requests.
27 virtual ~ProxyScriptFetcher() {}
28
29 // Downloads the given PAC URL, and invokes |callback| on completion.
30 // Returns OK on success, otherwise the error code. If the return code is
31 // ERR_IO_PENDING, then the request completes asynchronously, and |callback|
32 // will be invoked later with the final error code.
33 // After synchronous or asynchronous completion with a result code of OK,
34 // |*utf16_text| is filled with the response. On failure, the result text is
35 // an empty string, and the result code is a network error. Some special
36 // network errors that may occur are:
37 //
38 // ERR_TIMED_OUT -- the fetch took too long to complete.
39 // ERR_FILE_TOO_BIG -- the response's body was too large.
40 // ERR_PAC_STATUS_NOT_OK -- non-200 HTTP status code.
41 // ERR_NOT_IMPLEMENTED -- the response required authentication.
42 //
43 // If the request is cancelled (either using the "Cancel()" method or by
44 // deleting |this|), then no callback is invoked.
45 //
46 // Only one fetch is allowed to be outstanding at a time.
47 virtual int Fetch(const GURL& url, base::string16* utf16_text,
48 const net::CompletionCallback& callback) = 0;
49
50 // Aborts the in-progress fetch (if any).
51 virtual void Cancel() = 0;
52
53 // Returns the request context that this fetcher uses to issue downloads,
54 // or NULL.
55 virtual URLRequestContext* GetRequestContext() const = 0;
56 };
57
58 } // namespace net
59
60 #endif // NET_PROXY_PROXY_SCRIPT_FETCHER_H_
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