src/starboard/nplb/socket_helpers.h - cobalt - Git at Google

 // Copyright 2015 The Cobalt Authors. All Rights Reserved.
 //
 // 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 STARBOARD_NPLB_SOCKET_HELPERS_H_
 #define STARBOARD_NPLB_SOCKET_HELPERS_H_

 #include <vector>

 #include "starboard/common/scoped_ptr.h"
 #include "starboard/common/socket.h"
 #include "starboard/socket_waiter.h"
 #include "starboard/time.h"
 #include "testing/gtest/include/gtest/gtest.h"

 namespace starboard {
 namespace nplb {

 const SbTime kSocketTimeout = kSbTimeSecond / 5;

 // Returns true if the given address is the unspecified address (all zeros),
 // supporting both address types.
 bool IsUnspecified(const SbSocketAddress* address);

 // Returns true if the given address is the localhost address, supporting both
 // address types.
 bool IsLocalhost(const SbSocketAddress* address);

 // Returns a valid port number that can be bound to for use in nplb tests.
 // This will always return the same port number.
 int GetPortNumberForTests();

 // Returns an IP localhost address with the given port.
 SbSocketAddress GetLocalhostAddress(SbSocketAddressType address_type, int port);

 // Returns an IP unspecified address with the given port.
 SbSocketAddress GetUnspecifiedAddress(SbSocketAddressType address_type,
                                       int port);

 // Creates a TCP/IP server socket (sets Reuse Address option).
 SbSocket CreateServerTcpSocket(SbSocketAddressType address_type);
 scoped_ptr<Socket> CreateServerTcpSocketWrapped(
     SbSocketAddressType address_type);

 // Creates a TCP/IP socket bound to all interfaces on the given port.
 SbSocket CreateBoundTcpSocket(SbSocketAddressType address_type, int port);
 scoped_ptr<Socket> CreateBoundTcpSocketWrapped(SbSocketAddressType address_type,
                                                int port);

 // Creates a TCP/IP socket listening on all interfaces on the given port.
 SbSocket CreateListeningTcpSocket(SbSocketAddressType address_type, int port);
 scoped_ptr<Socket> CreateListeningTcpSocketWrapped(
     SbSocketAddressType address_type,
     int port);

 // Tries to accept a new connection from the given listening socket by checking,
 // yielding, and retrying for up to timeout. Returns kSbSocketInvalid if no
 // socket has been accepted in the given time.
 SbSocket AcceptBySpinning(SbSocket listen_socket, SbTime timeout);
 scoped_ptr<Socket> AcceptBySpinning(Socket* listen_socket, SbTime timeout);

 // Writes the given data to socket, spinning until success or error.
 bool WriteBySpinning(SbSocket socket,
                      const char* data,
                      int data_size,
                      SbTime timeout);
 bool WriteBySpinning(Socket* socket,
                      const char* data,
                      int data_size,
                      SbTime timeout);

 // Reads the given amount of data from socket, spinning until success or error.
 bool ReadBySpinning(SbSocket socket,
                     char* out_data,
                     int data_size,
                     SbTime timeout);
 bool ReadBySpinning(Socket* socket,
                     char* out_data,
                     int data_size,
                     SbTime timeout);

 // Transfers data between the two connected local sockets, spinning until |size|
 // has been transfered, or an error occurs.
 int Transfer(SbSocket receive_socket,
              char* out_data,
              SbSocket send_socket,
              const char* send_data,
              int size);
 int Transfer(Socket* receive_socket,
              char* out_data,
              Socket* send_socket,
              const char* send_data,
              int size);

 struct ConnectedTrio {
   ConnectedTrio()
       : listen_socket(kSbSocketInvalid),
         client_socket(kSbSocketInvalid),
         server_socket(kSbSocketInvalid) {}
   ConnectedTrio(SbSocket listen_socket,
                 SbSocket client_socket,
                 SbSocket server_socket)
       : listen_socket(listen_socket),
         client_socket(client_socket),
         server_socket(server_socket) {}
   SbSocket listen_socket;
   SbSocket client_socket;
   SbSocket server_socket;
 };

 struct ConnectedTrioWrapped {
   ConnectedTrioWrapped() {}
   ConnectedTrioWrapped(scoped_ptr<Socket> listen_socket,
                        scoped_ptr<Socket> client_socket,
                        scoped_ptr<Socket> server_socket)
       : listen_socket(listen_socket.Pass()),
         client_socket(client_socket.Pass()),
         server_socket(server_socket.Pass()) {}
   scoped_ptr<Socket> listen_socket;
   scoped_ptr<Socket> client_socket;
   scoped_ptr<Socket> server_socket;
 };

 // Creates and returns 3 TCP/IP sockets, a connected client and server, and a
 // listener on the given port. If anything fails, adds a failure and returns
 // three invalid sockets.
 ConnectedTrio CreateAndConnect(SbSocketAddressType server_address_type,
                                SbSocketAddressType client_address_type,
                                int port,
                                SbTime timeout);
 scoped_ptr<ConnectedTrioWrapped> CreateAndConnectWrapped(
     SbSocketAddressType server_address_type,
     SbSocketAddressType client_address_type,
     int port,
     SbTime timeout);

 // Waits on the given waiter, and returns the elapsed time.
 SbTimeMonotonic TimedWait(SbSocketWaiter waiter);

 // Waits on the given waiter, and returns the elapsed time.
 SbTimeMonotonic TimedWaitTimed(SbSocketWaiter waiter, SbTime timeout);

 // Waits on the given waiter, and checks that it blocked between [lower, upper).
 static inline void WaitShouldBlockBetween(SbSocketWaiter waiter,
                                           SbTime lower,
                                           SbTime upper) {
   SbTime time = TimedWait(waiter);
   EXPECT_GT(upper, time);
   EXPECT_LE(lower, time);
 }

 // Waits on the given waiter, and checks that it did not block for very long.
 static inline void WaitShouldNotBlock(SbSocketWaiter waiter) {
   WaitShouldBlockBetween(waiter, 0, kSocketTimeout);
 }

 // Waits on the given waiter, and checks that it did not block for the given
 // timeout.
 static inline void TimedWaitShouldNotBlock(SbSocketWaiter waiter,
                                            SbTime timeout) {
   EXPECT_GT(timeout, TimedWaitTimed(waiter, timeout));
 }

 // Waits on the given waiter, and checks that it did block for at least the
 // given timeout.
 static inline void TimedWaitShouldBlock(SbSocketWaiter waiter, SbTime timeout) {
   EXPECT_LE(timeout, TimedWaitTimed(waiter, timeout));
 }

 // Socket operations may return specific (e.g. kSbSocketErrorConnectionReset) or
 // general (e.g. kSbSocketErrorFailed) error codes, and while in some cases
 // it may be important that we obtain a specific error message, in other cases
 // it will just be used as a hint and so these methods are provided to make
 // it easy to test against specific or general errors.
 static inline bool SocketErrorIn(
     SbSocketError error,
     const std::vector<SbSocketError>& expected_set) {
   for (size_t i = 0; i < expected_set.size(); ++i) {
     if (expected_set[i] == error) {
       return true;
     }
   }
   return false;
 }

 #define EXPECT_SB_SOCKET_ERROR_IN(error, ...)        \
   do {                                               \
     EXPECT_TRUE(SocketErrorIn(error, {__VA_ARGS__})) \
         << "With " #error " = " << error;            \
   } while (false)

 #define EXPECT_SB_SOCKET_ERROR_IS_ERROR(error)                          \
   do {                                                                  \
     EXPECT_FALSE(SocketErrorIn(error, {kSbSocketOk, kSbSocketPending})) \
         << "With " #error " = " << error;                               \
   } while (false)

 }  // namespace nplb
 }  // namespace starboard

 #endif  // STARBOARD_NPLB_SOCKET_HELPERS_H_
	// Copyright 2015 The Cobalt Authors. All Rights Reserved.
	//
	// 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 STARBOARD_NPLB_SOCKET_HELPERS_H_
	#define STARBOARD_NPLB_SOCKET_HELPERS_H_

	#include <vector>

	#include "starboard/common/scoped_ptr.h"
	#include "starboard/common/socket.h"
	#include "starboard/socket_waiter.h"
	#include "starboard/time.h"
	#include "testing/gtest/include/gtest/gtest.h"

	namespace starboard {
	namespace nplb {

	const SbTime kSocketTimeout = kSbTimeSecond / 5;

	// Returns true if the given address is the unspecified address (all zeros),
	// supporting both address types.
	bool IsUnspecified(const SbSocketAddress* address);

	// Returns true if the given address is the localhost address, supporting both
	// address types.
	bool IsLocalhost(const SbSocketAddress* address);

	// Returns a valid port number that can be bound to for use in nplb tests.
	// This will always return the same port number.
	int GetPortNumberForTests();

	// Returns an IP localhost address with the given port.
	SbSocketAddress GetLocalhostAddress(SbSocketAddressType address_type, int port);

	// Returns an IP unspecified address with the given port.
	SbSocketAddress GetUnspecifiedAddress(SbSocketAddressType address_type,
	int port);

	// Creates a TCP/IP server socket (sets Reuse Address option).
	SbSocket CreateServerTcpSocket(SbSocketAddressType address_type);
	scoped_ptr<Socket> CreateServerTcpSocketWrapped(
	SbSocketAddressType address_type);

	// Creates a TCP/IP socket bound to all interfaces on the given port.
	SbSocket CreateBoundTcpSocket(SbSocketAddressType address_type, int port);
	scoped_ptr<Socket> CreateBoundTcpSocketWrapped(SbSocketAddressType address_type,
	int port);

	// Creates a TCP/IP socket listening on all interfaces on the given port.
	SbSocket CreateListeningTcpSocket(SbSocketAddressType address_type, int port);
	scoped_ptr<Socket> CreateListeningTcpSocketWrapped(
	SbSocketAddressType address_type,
	int port);

	// Tries to accept a new connection from the given listening socket by checking,
	// yielding, and retrying for up to timeout. Returns kSbSocketInvalid if no
	// socket has been accepted in the given time.
	SbSocket AcceptBySpinning(SbSocket listen_socket, SbTime timeout);
	scoped_ptr<Socket> AcceptBySpinning(Socket* listen_socket, SbTime timeout);

	// Writes the given data to socket, spinning until success or error.
	bool WriteBySpinning(SbSocket socket,
	const char* data,
	int data_size,
	SbTime timeout);
	bool WriteBySpinning(Socket* socket,
	const char* data,
	int data_size,
	SbTime timeout);

	// Reads the given amount of data from socket, spinning until success or error.
	bool ReadBySpinning(SbSocket socket,
	char* out_data,
	int data_size,
	SbTime timeout);
	bool ReadBySpinning(Socket* socket,
	char* out_data,
	int data_size,
	SbTime timeout);

	// Transfers data between the two connected local sockets, spinning until \|size\|
	// has been transfered, or an error occurs.
	int Transfer(SbSocket receive_socket,
	char* out_data,
	SbSocket send_socket,
	const char* send_data,
	int size);
	int Transfer(Socket* receive_socket,
	char* out_data,
	Socket* send_socket,
	const char* send_data,
	int size);

	struct ConnectedTrio {
	ConnectedTrio()
	: listen_socket(kSbSocketInvalid),
	client_socket(kSbSocketInvalid),
	server_socket(kSbSocketInvalid) {}
	ConnectedTrio(SbSocket listen_socket,
	SbSocket client_socket,
	SbSocket server_socket)
	: listen_socket(listen_socket),
	client_socket(client_socket),
	server_socket(server_socket) {}
	SbSocket listen_socket;
	SbSocket client_socket;
	SbSocket server_socket;
	};

	struct ConnectedTrioWrapped {
	ConnectedTrioWrapped() {}
	ConnectedTrioWrapped(scoped_ptr<Socket> listen_socket,
	scoped_ptr<Socket> client_socket,
	scoped_ptr<Socket> server_socket)
	: listen_socket(listen_socket.Pass()),
	client_socket(client_socket.Pass()),
	server_socket(server_socket.Pass()) {}
	scoped_ptr<Socket> listen_socket;
	scoped_ptr<Socket> client_socket;
	scoped_ptr<Socket> server_socket;
	};

	// Creates and returns 3 TCP/IP sockets, a connected client and server, and a
	// listener on the given port. If anything fails, adds a failure and returns
	// three invalid sockets.
	ConnectedTrio CreateAndConnect(SbSocketAddressType server_address_type,
	SbSocketAddressType client_address_type,
	int port,
	SbTime timeout);
	scoped_ptr<ConnectedTrioWrapped> CreateAndConnectWrapped(
	SbSocketAddressType server_address_type,
	SbSocketAddressType client_address_type,
	int port,
	SbTime timeout);

	// Waits on the given waiter, and returns the elapsed time.
	SbTimeMonotonic TimedWait(SbSocketWaiter waiter);

	// Waits on the given waiter, and returns the elapsed time.
	SbTimeMonotonic TimedWaitTimed(SbSocketWaiter waiter, SbTime timeout);

	// Waits on the given waiter, and checks that it blocked between [lower, upper).
	static inline void WaitShouldBlockBetween(SbSocketWaiter waiter,
	SbTime lower,
	SbTime upper) {
	SbTime time = TimedWait(waiter);
	EXPECT_GT(upper, time);
	EXPECT_LE(lower, time);
	}

	// Waits on the given waiter, and checks that it did not block for very long.
	static inline void WaitShouldNotBlock(SbSocketWaiter waiter) {
	WaitShouldBlockBetween(waiter, 0, kSocketTimeout);
	}

	// Waits on the given waiter, and checks that it did not block for the given
	// timeout.
	static inline void TimedWaitShouldNotBlock(SbSocketWaiter waiter,
	SbTime timeout) {
	EXPECT_GT(timeout, TimedWaitTimed(waiter, timeout));
	}

	// Waits on the given waiter, and checks that it did block for at least the
	// given timeout.
	static inline void TimedWaitShouldBlock(SbSocketWaiter waiter, SbTime timeout) {
	EXPECT_LE(timeout, TimedWaitTimed(waiter, timeout));
	}

	// Socket operations may return specific (e.g. kSbSocketErrorConnectionReset) or
	// general (e.g. kSbSocketErrorFailed) error codes, and while in some cases
	// it may be important that we obtain a specific error message, in other cases
	// it will just be used as a hint and so these methods are provided to make
	// it easy to test against specific or general errors.
	static inline bool SocketErrorIn(
	SbSocketError error,
	const std::vector<SbSocketError>& expected_set) {
	for (size_t i = 0; i < expected_set.size(); ++i) {
	if (expected_set[i] == error) {
	return true;
	}
	}
	return false;
	}

	#define EXPECT_SB_SOCKET_ERROR_IN(error, ...) \
	do { \
	EXPECT_TRUE(SocketErrorIn(error, {__VA_ARGS__})) \
	<< "With " #error " = " << error; \
	} while (false)

	#define EXPECT_SB_SOCKET_ERROR_IS_ERROR(error) \
	do { \
	EXPECT_FALSE(SocketErrorIn(error, {kSbSocketOk, kSbSocketPending})) \
	<< "With " #error " = " << error; \
	} while (false)

	} // namespace nplb
	} // namespace starboard

	#endif // STARBOARD_NPLB_SOCKET_HELPERS_H_