Prepare wpiutil for merge into allwpilib.

wpiutil/src/main/native/include/udpsockets/UDPClient.h

@@ -0,0 +1,45 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) 2017-2018 FIRST. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#ifndef WPIUTIL_UDPSOCKETS_UDPCLIENT_H_
+#define WPIUTIL_UDPSOCKETS_UDPCLIENT_H_
+
+#include <string>
+
+#include "llvm/ArrayRef.h"
+#include "llvm/StringRef.h"
+#include "support/mutex.h"
+
+namespace wpi {
+
+class Logger;
+
+class UDPClient {
+  int m_lsd;
+  std::string m_address;
+  Logger& m_logger;
+
+ public:
+  explicit UDPClient(Logger& logger);
+  UDPClient(llvm::StringRef address, Logger& logger);
+  UDPClient(const UDPClient& other) = delete;
+  UDPClient(UDPClient&& other);
+  ~UDPClient();
+
+  UDPClient& operator=(const UDPClient& other) = delete;
+  UDPClient& operator=(UDPClient&& other);
+
+  int start();
+  void shutdown();
+  // The passed in address MUST be a resolved IP address.
+  int send(llvm::ArrayRef<uint8_t> data, llvm::StringRef server, int port);
+  int send(llvm::StringRef data, llvm::StringRef server, int port);
+};
+
+}  // namespace wpi
+
+#endif  // WPIUTIL_UDPSOCKETS_UDPCLIENT_H_