mirror of
https://github.com/deneraraujo/OpenVPNAdapter.git
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Sergey Abramchuk
e9b9b66317
daf575ff50 Merge remote-tracking branch 'origin/qa' e3a2425be4 [UCONNECT-1027] remotelist: create standalone object for resolve thread e487b75860 async-resolve: use native GCD implementation on iOS 346ed043fa Merge remote-tracking branch 'origin/qa' 3f55dcd266 remotelist: add missing includes 073b3993f4 Fix commit 8b22a7b2 (mbed TLS compatibility) 8b22a7b209 Fix compatibility with mbed TLS < 2.7.0 git-subtree-dir: Sources/OpenVPNAdapter/Libraries/Vendors/openvpn git-subtree-split: daf575ff5099eebb10109e52be94253507fd253b
75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
// OpenVPN -- An application to securely tunnel IP networks
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// over a single port, with support for SSL/TLS-based
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// session authentication and key exchange,
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// packet encryption, packet authentication, and
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// packet compression.
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//
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// Copyright (C) 2012-2019 OpenVPN Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License Version 3
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// as published by the Free Software Foundation.
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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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program in the COPYING file.
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// If not, see <http://www.gnu.org/licenses/>.
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#ifndef OPENVPN_CLIENT_ASYNC_RESOLVE_GENERIC_H
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#define OPENVPN_CLIENT_ASYNC_RESOLVE_GENERIC_H
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#include <openvpn/common/bigmutex.hpp>
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#include <openvpn/common/rc.hpp>
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#include <openvpn/common/hostport.hpp>
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namespace openvpn {
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template<typename RESOLVER_TYPE>
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class AsyncResolvable: public virtual RC<thread_unsafe_refcount>
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{
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private:
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typedef RCPtr<AsyncResolvable> Ptr;
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openvpn_io::io_context& io_context;
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RESOLVER_TYPE resolver;
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public:
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AsyncResolvable(openvpn_io::io_context& io_context_arg)
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: io_context(io_context_arg),
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resolver(io_context_arg)
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{
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}
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virtual void resolve_callback(const openvpn_io::error_code& error,
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typename RESOLVER_TYPE::results_type results) = 0;
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// This implementation assumes that the i/o reactor provides an asynchronous
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// DNS resolution routine using its own primitives and that doesn't require
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// us to take care of any non-interruptible opration (i.e. getaddrinfo() in
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// case of ASIO).
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//
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// For example, iOS implements aync_resolve using GCD and CFHost. This
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// implementation satisfies the constraints mentioned above
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void async_resolve_name(const std::string& host, const std::string& port)
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{
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resolver.async_resolve(host, port, [self=Ptr(this)](const openvpn_io::error_code& error,
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typename RESOLVER_TYPE::results_type results)
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{
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OPENVPN_ASYNC_HANDLER;
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self->resolve_callback(error, results);
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});
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}
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void async_resolve_cancel()
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{
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resolver.cancel();
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}
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};
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}
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#endif /* OPENVPN_CLIENT_ASYNC_RESOLVE_GENERIC_H */
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