94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
//
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// Copyright (C) 2020 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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//
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#pragma once
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#include <string.h>
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#include <deque>
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#include <functional>
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#include <map>
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#include <memory>
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#include <mutex>
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#include <string>
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#include <thread>
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#include <vector>
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#include <json/json.h>
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#include <libwebsockets.h>
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namespace cuttlefish {
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namespace webrtc_streaming {
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struct ServerConfig {
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enum class Security {
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kInsecure,
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kAllowSelfSigned,
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kStrict,
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};
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// The ip address or domain name of the operator server.
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std::string addr;
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int port;
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// The path component of the operator server's register url.
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std::string path;
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// The security level to use when connecting to the operator server.
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Security security;
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// A list of key value pairs to include as HTTP handshake headers when
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// connecting to the operator.
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std::vector<std::pair<std::string, std::string>> http_headers;
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};
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class ServerConnectionObserver {
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public:
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virtual ~ServerConnectionObserver() = default;
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// Called when the connection to the server has been established. This is the
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// cue to start using Send().
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virtual void OnOpen() = 0;
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virtual void OnClose() = 0;
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// Called when the connection to the server has failed with an unrecoverable
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// error.
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virtual void OnError(const std::string& error) = 0;
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virtual void OnReceive(const uint8_t* msg, size_t length, bool is_binary) = 0;
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};
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// Represents a connection to the signaling server. When a connection is created
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// it connects with the server automatically but sends no info.
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// Only Send() can be called from multiple threads simultaneously. Reconnect(),
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// Send() and the destructor will run into race conditions if called
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// concurrently.
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class ServerConnection {
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public:
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static std::unique_ptr<ServerConnection> Connect(
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const ServerConfig& conf,
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std::weak_ptr<ServerConnectionObserver> observer);
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// Destroying the connection will disconnect from the signaling server and
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// release any open fds.
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virtual ~ServerConnection() = default;
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// Sends data to the server encoded as JSON.
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virtual bool Send(const Json::Value&) = 0;
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// makes re-connect request
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virtual void Reconnect();
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private:
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virtual void Connect() = 0;
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};
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} // namespace webrtc_streaming
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} // namespace cuttlefish
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