Initial drop of cppdap

include/dap/network.h

@@ -0,0 +1,55 @@
+// Copyright 2019 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef dap_network_h
+#define dap_network_h
+
+#include <functional>
+#include <memory>
+
+namespace dap {
+class ReaderWriter;
+
+namespace net {
+
+// connect() connects to the given TCP address and port.
+std::shared_ptr<ReaderWriter> connect(const char* addr, int port);
+
+// Server implements a basic TCP server.
+class Server {
+ public:
+  using OnError = std::function<void(const char*)>;
+  using OnConnect = std::function<void(const std::shared_ptr<ReaderWriter>&)>;
+
+  virtual ~Server() = default;
+
+  // create() constructs and returns a new Server.
+  static std::unique_ptr<Server> create();
+
+  // start() begins listening for connections on the given port.
+  // callback will be called for each connection.
+  // onError will be called for any connection errors.
+  virtual bool start(int port,
+                     const OnConnect& callback,
+                     const OnError& onError = OnError()) = 0;
+
+  // stop() stops listening for connections.
+  // stop() is implicitly called on destruction.
+  virtual void stop() = 0;
+};
+
+}  // namespace net
+}  // namespace dap
+
+#endif  // dap_network_h