99e21f4320
Session allows to reuse SessionRequests to the same host by making them
keeping alive connection. Turns out, though, that libcurl already does
that for us, and we didn't gain any speedup we thought we'd get.
Usage:
```
Networking::Session s;
Networking::SessionRequest *request = s.get(url);
request->startAndWait();
warning("HTTP GET: %s", request->text());
s.close();
```
You can still use SessionRequest without Session (but you can't put them
on stack!):
```
Networking::SessionRequest *request = new
Networking::SessionRequest(url);
request->startAndWait();
warning("HTTP GET: %s", request->text());
request->close();
```
77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#define FORBIDDEN_SYMBOL_ALLOW_ALL
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#include "backends/networking/curl/session.h"
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namespace Networking {
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Session::Session(Common::String prefix):
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_prefix(prefix), _request(nullptr) {}
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Session::~Session() {
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close();
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}
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SessionRequest *Session::get(Common::String url, DataCallback cb, ErrorCallback ecb) {
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// check url prefix
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if (!_prefix.empty()) {
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if (url.contains("://")) {
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if (url.size() < _prefix.size() || url.find(_prefix) != 0) {
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warning("Session: given URL does not match the prefix!\n\t%s\n\t%s", url.c_str(), _prefix.c_str());
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return nullptr;
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}
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} else {
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// if no schema given, just append <url> to <_prefix>
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Common::String newUrl = _prefix;
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if (newUrl.lastChar() != '/' && (url.size() > 0 && url.firstChar() != '/'))
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newUrl += "/";
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newUrl += url;
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url = newUrl;
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}
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}
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// check if request has finished (ready to be replaced)
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if (_request) {
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if (!_request->complete()) {
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warning("Session: can't reuse Request that is being processed");
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return nullptr;
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}
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}
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if (!_request) {
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_request = new Networking::SessionRequest(url, cb, ecb); // automatically added to ConnMan
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_request->connectionKeepAlive();
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} else {
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_request->reuse(url, cb, ecb);
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}
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return _request;
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}
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void Session::close() {
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if (_request)
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_request->close();
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}
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} // End of namespace Networking
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