/indra/newview/llsrv.cpp

 1/** 
 2 * @file llsrv.cpp
 3 * @brief Wrapper for DNS SRV record lookups
 4 *
 5 * $LicenseInfo:firstyear=2007&license=viewerlgpl$
 6 * Second Life Viewer Source Code
 7 * Copyright (C) 2010, Linden Research, Inc.
 8 * 
 9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation;
12 * version 2.1 of the License only.
13 * 
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * Lesser General Public License for more details.
18 * 
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
22 * 
23 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
24 * $/LicenseInfo$
25 */
26
27#include "llviewerprecompiledheaders.h"
28
29#include "llsrv.h"
30#include "llares.h"
31
32struct Responder : public LLAres::UriRewriteResponder
33{
34	std::vector<std::string> mUris;
35	void rewriteResult(const std::vector<std::string> &uris) {
36		for (size_t i = 0; i < uris.size(); i++)
37		{
38			llinfos << "[" << i << "] " << uris[i] << llendl;
39		}
40		mUris = uris;
41	}
42};
43
44std::vector<std::string> LLSRV::rewriteURI(const std::string& uri)
45{
46	LLPointer<Responder> resp = new Responder;
47
48	gAres->rewriteURI(uri, resp);
49 	gAres->processAll();
50
51	// It's been observed in deployment that c-ares can return control
52	// to us without firing all of our callbacks, in which case the
53	// returned vector will be empty, instead of a singleton as we
54	// might wish.
55
56	if (!resp->mUris.empty())
57	{
58		return resp->mUris;
59	}
60
61	std::vector<std::string> uris;
62	uris.push_back(uri);
63	return uris;
64}