Initial work

external/android-emugl/shared/emugl/common/sockets.h

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+// Copyright (C) 2014 The Android Open Source Project
+//
+// 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
+//
+// http://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 EMUGL_COMMON_SOCKETS_H
+#define EMUGL_COMMON_SOCKETS_H
+
+// A set of helper functions used to deal with sockets in a portable way.
+
+namespace emugl {
+
+// Disable Nagle's algorithm for socket descriptor |s|. This assumes
+// that |s| is a TCP socket descriptor.
+void socketTcpDisableNagle(int s);
+
+// Return the port associated with a given IP or IPv6 socket,
+// or -errno code on failure.
+int socketGetPort(int s);
+
+// Bind to a local/Unix path, and return its socket descriptor on success,
+// or -errno code on failure.
+int socketLocalServer(const char* path, int socketType);
+
+// Connect to a Unix local path, and return a new socket descriptor
+// on success, or -errno code on failure.
+int socketLocalClient(const char* path, int socketType);
+
+// Bind to a localhost TCP socket, and return its socket descriptor on
+// success, or -errno code on failure.
+int socketTcpLoopbackServer(int port, int socketType);
+
+// Connect to a localhost TCP port, and return a new socket descriptor on
+// success, or -errno code on failure.
+int socketTcpLoopbackClient(int port, int socketType);
+
+// Connect to a TCP host, and return a new socket descriptor on
+// success, or -errno code on failure.
+int socketTcpClient(const char* hostname, int port, int socketType);
+
+// Accept a new connection. |serverSocket| must be a bound server socket
+// descriptor. Returns new socket descriptor on success, or -errno code
+// on failure.
+int socketAccept(int serverSocket);
+
+}  // namespace emugl
+
+#endif  // EMUGL_COMMON_SOCKETS_H