adb/socket_test.cpp - android-core - Git at Google

 /*
  * Copyright (C) 2015 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.
  */

 #include "fdevent.h"

 #include <gtest/gtest.h>

 #include <array>
 #include <limits>
 #include <queue>
 #include <string>
 #include <vector>

 #include <unistd.h>

 #include "adb.h"
 #include "adb_io.h"
 #include "fdevent_test.h"
 #include "socket.h"
 #include "sysdeps.h"

 struct ThreadArg {
     int first_read_fd;
     int last_write_fd;
     size_t middle_pipe_count;
 };

 class LocalSocketTest : public FdeventTest {};

 static void FdEventThreadFunc(void*) {
     fdevent_loop();
 }

 const size_t SLEEP_FOR_FDEVENT_IN_MS = 100;

 TEST_F(LocalSocketTest, smoke) {
     // Join two socketpairs with a chain of intermediate socketpairs.
     int first[2];
     std::vector<std::array<int, 2>> intermediates;
     int last[2];

     constexpr size_t INTERMEDIATE_COUNT = 50;
     constexpr size_t MESSAGE_LOOP_COUNT = 100;
     const std::string MESSAGE = "socket_test";

     intermediates.resize(INTERMEDIATE_COUNT);
     ASSERT_EQ(0, adb_socketpair(first)) << strerror(errno);
     ASSERT_EQ(0, adb_socketpair(last)) << strerror(errno);
     asocket* prev_tail = create_local_socket(first[1]);
     ASSERT_NE(nullptr, prev_tail);

     auto connect = [](asocket* tail, asocket* head) {
         tail->peer = head;
         head->peer = tail;
         tail->ready(tail);
     };

     for (auto& intermediate : intermediates) {
         ASSERT_EQ(0, adb_socketpair(intermediate.data())) << strerror(errno);

         asocket* head = create_local_socket(intermediate[0]);
         ASSERT_NE(nullptr, head);

         asocket* tail = create_local_socket(intermediate[1]);
         ASSERT_NE(nullptr, tail);

         connect(prev_tail, head);
         prev_tail = tail;
     }

     asocket* end = create_local_socket(last[0]);
     ASSERT_NE(nullptr, end);
     connect(prev_tail, end);

     PrepareThread();
     adb_thread_t thread;
     ASSERT_TRUE(adb_thread_create(FdEventThreadFunc, nullptr, &thread));

     for (size_t i = 0; i < MESSAGE_LOOP_COUNT; ++i) {
         std::string read_buffer = MESSAGE;
         std::string write_buffer(MESSAGE.size(), 'a');
         ASSERT_TRUE(WriteFdExactly(first[0], &read_buffer[0], read_buffer.size()));
         ASSERT_TRUE(ReadFdExactly(last[1], &write_buffer[0], write_buffer.size()));
         ASSERT_EQ(read_buffer, write_buffer);
     }

     ASSERT_EQ(0, adb_close(first[0]));
     ASSERT_EQ(0, adb_close(last[1]));

     // Wait until the local sockets are closed.
     adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
     ASSERT_EQ(GetAdditionalLocalSocketCount(), fdevent_installed_count());
     TerminateThread(thread);
 }

 struct CloseWithPacketArg {
     int socket_fd;
     size_t bytes_written;
     int cause_close_fd;
 };

 static void CloseWithPacketThreadFunc(CloseWithPacketArg* arg) {
     asocket* s = create_local_socket(arg->socket_fd);
     ASSERT_TRUE(s != nullptr);
     arg->bytes_written = 0;
     while (true) {
         apacket* p = get_apacket();
         p->len = sizeof(p->data);
         arg->bytes_written += p->len;
         int ret = s->enqueue(s, p);
         if (ret == 1) {
             // The writer has one packet waiting to send.
             break;
         }
     }

     asocket* cause_close_s = create_local_socket(arg->cause_close_fd);
     ASSERT_TRUE(cause_close_s != nullptr);
     cause_close_s->peer = s;
     s->peer = cause_close_s;
     cause_close_s->ready(cause_close_s);

     fdevent_loop();
 }

 // This test checks if we can close local socket in the following situation:
 // The socket is closing but having some packets, so it is not closed. Then
 // some write error happens in the socket's file handler, e.g., the file
 // handler is closed.
 TEST_F(LocalSocketTest, close_socket_with_packet) {
     int socket_fd[2];
     ASSERT_EQ(0, adb_socketpair(socket_fd));
     int cause_close_fd[2];
     ASSERT_EQ(0, adb_socketpair(cause_close_fd));
     CloseWithPacketArg arg;
     arg.socket_fd = socket_fd[1];
     arg.cause_close_fd = cause_close_fd[1];

     PrepareThread();
     adb_thread_t thread;
     ASSERT_TRUE(adb_thread_create(reinterpret_cast<void (*)(void*)>(CloseWithPacketThreadFunc),
                                   &arg, &thread));
     // Wait until the fdevent_loop() starts.
     adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
     ASSERT_EQ(0, adb_close(cause_close_fd[0]));
     adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
     EXPECT_EQ(1u + GetAdditionalLocalSocketCount(), fdevent_installed_count());
     ASSERT_EQ(0, adb_close(socket_fd[0]));
     adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
     ASSERT_EQ(GetAdditionalLocalSocketCount(), fdevent_installed_count());
     TerminateThread(thread);
 }

 // This test checks if we can read packets from a closing local socket.
 TEST_F(LocalSocketTest, read_from_closing_socket) {
     int socket_fd[2];
     ASSERT_EQ(0, adb_socketpair(socket_fd));
     int cause_close_fd[2];
     ASSERT_EQ(0, adb_socketpair(cause_close_fd));
     CloseWithPacketArg arg;
     arg.socket_fd = socket_fd[1];
     arg.cause_close_fd = cause_close_fd[1];

     PrepareThread();
     adb_thread_t thread;
     ASSERT_TRUE(adb_thread_create(reinterpret_cast<void (*)(void*)>(CloseWithPacketThreadFunc),
                                   &arg, &thread));
     // Wait until the fdevent_loop() starts.
     adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
     ASSERT_EQ(0, adb_close(cause_close_fd[0]));
     adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
     EXPECT_EQ(1u + GetAdditionalLocalSocketCount(), fdevent_installed_count());

     // Verify if we can read successfully.
     std::vector<char> buf(arg.bytes_written);
     ASSERT_NE(0u, arg.bytes_written);
     ASSERT_EQ(true, ReadFdExactly(socket_fd[0], buf.data(), buf.size()));
     ASSERT_EQ(0, adb_close(socket_fd[0]));

     adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
     ASSERT_EQ(GetAdditionalLocalSocketCount(), fdevent_installed_count());
     TerminateThread(thread);
 }

 // This test checks if we can close local socket in the following situation:
 // The socket is not closed and has some packets. When it fails to write to
 // the socket's file handler because the other end is closed, we check if the
 // socket is closed.
 TEST_F(LocalSocketTest, write_error_when_having_packets) {
     int socket_fd[2];
     ASSERT_EQ(0, adb_socketpair(socket_fd));
     int cause_close_fd[2];
     ASSERT_EQ(0, adb_socketpair(cause_close_fd));
     CloseWithPacketArg arg;
     arg.socket_fd = socket_fd[1];
     arg.cause_close_fd = cause_close_fd[1];

     PrepareThread();
     adb_thread_t thread;
     ASSERT_TRUE(adb_thread_create(reinterpret_cast<void (*)(void*)>(CloseWithPacketThreadFunc),
                                   &arg, &thread));

     // Wait until the fdevent_loop() starts.
     adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
     EXPECT_EQ(2u + GetAdditionalLocalSocketCount(), fdevent_installed_count());
     ASSERT_EQ(0, adb_close(socket_fd[0]));

     adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
     ASSERT_EQ(GetAdditionalLocalSocketCount(), fdevent_installed_count());
     TerminateThread(thread);
 }

 #if defined(__linux__)

 static void ClientThreadFunc() {
     std::string error;
     int fd = network_loopback_client(5038, SOCK_STREAM, &error);
     ASSERT_GE(fd, 0) << error;
     adb_sleep_ms(200);
     ASSERT_EQ(0, adb_close(fd));
 }

 struct CloseRdHupSocketArg {
     int socket_fd;
 };

 static void CloseRdHupSocketThreadFunc(CloseRdHupSocketArg* arg) {
     asocket* s = create_local_socket(arg->socket_fd);
     ASSERT_TRUE(s != nullptr);

     fdevent_loop();
 }

 // This test checks if we can close sockets in CLOSE_WAIT state.
 TEST_F(LocalSocketTest, close_socket_in_CLOSE_WAIT_state) {
     std::string error;
     int listen_fd = network_inaddr_any_server(5038, SOCK_STREAM, &error);
     ASSERT_GE(listen_fd, 0);

     adb_thread_t client_thread;
     ASSERT_TRUE(adb_thread_create(reinterpret_cast<void (*)(void*)>(ClientThreadFunc), nullptr,
                                   &client_thread));

     struct sockaddr addr;
     socklen_t alen;
     alen = sizeof(addr);
     int accept_fd = adb_socket_accept(listen_fd, &addr, &alen);
     ASSERT_GE(accept_fd, 0);
     CloseRdHupSocketArg arg;
     arg.socket_fd = accept_fd;

     PrepareThread();
     adb_thread_t thread;
     ASSERT_TRUE(adb_thread_create(reinterpret_cast<void (*)(void*)>(CloseRdHupSocketThreadFunc),
                                   &arg, &thread));

     // Wait until the fdevent_loop() starts.
     adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
     EXPECT_EQ(1u + GetAdditionalLocalSocketCount(), fdevent_installed_count());

     // Wait until the client closes its socket.
     ASSERT_TRUE(adb_thread_join(client_thread));

     adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
     ASSERT_EQ(GetAdditionalLocalSocketCount(), fdevent_installed_count());
     TerminateThread(thread);
 }

 #endif  // defined(__linux__)

 #if ADB_HOST

 // Checks that skip_host_serial(serial) returns a pointer to the part of |serial| which matches
 // |expected|, otherwise logs the failure to gtest.
 void VerifySkipHostSerial(std::string serial, const char* expected) {
     char* result = internal::skip_host_serial(&serial[0]);
     if (expected == nullptr) {
         EXPECT_EQ(nullptr, result);
     } else {
         EXPECT_STREQ(expected, result);
     }
 }

 // Check [tcp:|udp:]<serial>[:<port>]:<command> format.
 TEST(socket_test, test_skip_host_serial) {
     for (const std::string& protocol : {"", "tcp:", "udp:"}) {
         VerifySkipHostSerial(protocol, nullptr);
         VerifySkipHostSerial(protocol + "foo", nullptr);

         VerifySkipHostSerial(protocol + "foo:bar", ":bar");
         VerifySkipHostSerial(protocol + "foo:bar:baz", ":bar:baz");

         VerifySkipHostSerial(protocol + "foo:123:bar", ":bar");
         VerifySkipHostSerial(protocol + "foo:123:456", ":456");
         VerifySkipHostSerial(protocol + "foo:123:bar:baz", ":bar:baz");

         // Don't register a port unless it's all numbers and ends with ':'.
         VerifySkipHostSerial(protocol + "foo:123", ":123");
         VerifySkipHostSerial(protocol + "foo:123bar:baz", ":123bar:baz");
     }
 }

 // Check <prefix>:<serial>:<command> format.
 TEST(socket_test, test_skip_host_serial_prefix) {
     for (const std::string& prefix : {"usb:", "product:", "model:", "device:"}) {
         VerifySkipHostSerial(prefix, nullptr);
         VerifySkipHostSerial(prefix + "foo", nullptr);

         VerifySkipHostSerial(prefix + "foo:bar", ":bar");
         VerifySkipHostSerial(prefix + "foo:bar:baz", ":bar:baz");
         VerifySkipHostSerial(prefix + "foo:123:bar", ":123:bar");
     }
 }

 #endif  // ADB_HOST
	/*
	* Copyright (C) 2015 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.
	*/

	#include "fdevent.h"

	#include <gtest/gtest.h>

	#include <array>
	#include <limits>
	#include <queue>
	#include <string>
	#include <vector>

	#include <unistd.h>

	#include "adb.h"
	#include "adb_io.h"
	#include "fdevent_test.h"
	#include "socket.h"
	#include "sysdeps.h"

	struct ThreadArg {
	int first_read_fd;
	int last_write_fd;
	size_t middle_pipe_count;
	};

	class LocalSocketTest : public FdeventTest {};

	static void FdEventThreadFunc(void*) {
	fdevent_loop();
	}

	const size_t SLEEP_FOR_FDEVENT_IN_MS = 100;

	TEST_F(LocalSocketTest, smoke) {
	// Join two socketpairs with a chain of intermediate socketpairs.
	int first[2];
	std::vector<std::array<int, 2>> intermediates;
	int last[2];

	constexpr size_t INTERMEDIATE_COUNT = 50;
	constexpr size_t MESSAGE_LOOP_COUNT = 100;
	const std::string MESSAGE = "socket_test";

	intermediates.resize(INTERMEDIATE_COUNT);
	ASSERT_EQ(0, adb_socketpair(first)) << strerror(errno);
	ASSERT_EQ(0, adb_socketpair(last)) << strerror(errno);
	asocket* prev_tail = create_local_socket(first[1]);
	ASSERT_NE(nullptr, prev_tail);

	auto connect = [](asocket* tail, asocket* head) {
	tail->peer = head;
	head->peer = tail;
	tail->ready(tail);
	};

	for (auto& intermediate : intermediates) {
	ASSERT_EQ(0, adb_socketpair(intermediate.data())) << strerror(errno);

	asocket* head = create_local_socket(intermediate[0]);
	ASSERT_NE(nullptr, head);

	asocket* tail = create_local_socket(intermediate[1]);
	ASSERT_NE(nullptr, tail);

	connect(prev_tail, head);
	prev_tail = tail;
	}

	asocket* end = create_local_socket(last[0]);
	ASSERT_NE(nullptr, end);
	connect(prev_tail, end);

	PrepareThread();
	adb_thread_t thread;
	ASSERT_TRUE(adb_thread_create(FdEventThreadFunc, nullptr, &thread));

	for (size_t i = 0; i < MESSAGE_LOOP_COUNT; ++i) {
	std::string read_buffer = MESSAGE;
	std::string write_buffer(MESSAGE.size(), 'a');
	ASSERT_TRUE(WriteFdExactly(first[0], &read_buffer[0], read_buffer.size()));
	ASSERT_TRUE(ReadFdExactly(last[1], &write_buffer[0], write_buffer.size()));
	ASSERT_EQ(read_buffer, write_buffer);
	}

	ASSERT_EQ(0, adb_close(first[0]));
	ASSERT_EQ(0, adb_close(last[1]));

	// Wait until the local sockets are closed.
	adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
	ASSERT_EQ(GetAdditionalLocalSocketCount(), fdevent_installed_count());
	TerminateThread(thread);
	}

	struct CloseWithPacketArg {
	int socket_fd;
	size_t bytes_written;
	int cause_close_fd;
	};

	static void CloseWithPacketThreadFunc(CloseWithPacketArg* arg) {
	asocket* s = create_local_socket(arg->socket_fd);
	ASSERT_TRUE(s != nullptr);
	arg->bytes_written = 0;
	while (true) {
	apacket* p = get_apacket();
	p->len = sizeof(p->data);
	arg->bytes_written += p->len;
	int ret = s->enqueue(s, p);
	if (ret == 1) {
	// The writer has one packet waiting to send.
	break;
	}
	}

	asocket* cause_close_s = create_local_socket(arg->cause_close_fd);
	ASSERT_TRUE(cause_close_s != nullptr);
	cause_close_s->peer = s;
	s->peer = cause_close_s;
	cause_close_s->ready(cause_close_s);

	fdevent_loop();
	}

	// This test checks if we can close local socket in the following situation:
	// The socket is closing but having some packets, so it is not closed. Then
	// some write error happens in the socket's file handler, e.g., the file
	// handler is closed.
	TEST_F(LocalSocketTest, close_socket_with_packet) {
	int socket_fd[2];
	ASSERT_EQ(0, adb_socketpair(socket_fd));
	int cause_close_fd[2];
	ASSERT_EQ(0, adb_socketpair(cause_close_fd));
	CloseWithPacketArg arg;
	arg.socket_fd = socket_fd[1];
	arg.cause_close_fd = cause_close_fd[1];

	PrepareThread();
	adb_thread_t thread;
	ASSERT_TRUE(adb_thread_create(reinterpret_cast<void ()(void)>(CloseWithPacketThreadFunc),
	&arg, &thread));
	// Wait until the fdevent_loop() starts.
	adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
	ASSERT_EQ(0, adb_close(cause_close_fd[0]));
	adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
	EXPECT_EQ(1u + GetAdditionalLocalSocketCount(), fdevent_installed_count());
	ASSERT_EQ(0, adb_close(socket_fd[0]));
	adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
	ASSERT_EQ(GetAdditionalLocalSocketCount(), fdevent_installed_count());
	TerminateThread(thread);
	}

	// This test checks if we can read packets from a closing local socket.
	TEST_F(LocalSocketTest, read_from_closing_socket) {
	int socket_fd[2];
	ASSERT_EQ(0, adb_socketpair(socket_fd));
	int cause_close_fd[2];
	ASSERT_EQ(0, adb_socketpair(cause_close_fd));
	CloseWithPacketArg arg;
	arg.socket_fd = socket_fd[1];
	arg.cause_close_fd = cause_close_fd[1];

	PrepareThread();
	adb_thread_t thread;
	ASSERT_TRUE(adb_thread_create(reinterpret_cast<void ()(void)>(CloseWithPacketThreadFunc),
	&arg, &thread));
	// Wait until the fdevent_loop() starts.
	adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
	ASSERT_EQ(0, adb_close(cause_close_fd[0]));
	adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
	EXPECT_EQ(1u + GetAdditionalLocalSocketCount(), fdevent_installed_count());

	// Verify if we can read successfully.
	std::vector<char> buf(arg.bytes_written);
	ASSERT_NE(0u, arg.bytes_written);
	ASSERT_EQ(true, ReadFdExactly(socket_fd[0], buf.data(), buf.size()));
	ASSERT_EQ(0, adb_close(socket_fd[0]));

	adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
	ASSERT_EQ(GetAdditionalLocalSocketCount(), fdevent_installed_count());
	TerminateThread(thread);
	}

	// This test checks if we can close local socket in the following situation:
	// The socket is not closed and has some packets. When it fails to write to
	// the socket's file handler because the other end is closed, we check if the
	// socket is closed.
	TEST_F(LocalSocketTest, write_error_when_having_packets) {
	int socket_fd[2];
	ASSERT_EQ(0, adb_socketpair(socket_fd));
	int cause_close_fd[2];
	ASSERT_EQ(0, adb_socketpair(cause_close_fd));
	CloseWithPacketArg arg;
	arg.socket_fd = socket_fd[1];
	arg.cause_close_fd = cause_close_fd[1];

	PrepareThread();
	adb_thread_t thread;
	ASSERT_TRUE(adb_thread_create(reinterpret_cast<void ()(void)>(CloseWithPacketThreadFunc),
	&arg, &thread));

	// Wait until the fdevent_loop() starts.
	adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
	EXPECT_EQ(2u + GetAdditionalLocalSocketCount(), fdevent_installed_count());
	ASSERT_EQ(0, adb_close(socket_fd[0]));

	adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
	ASSERT_EQ(GetAdditionalLocalSocketCount(), fdevent_installed_count());
	TerminateThread(thread);
	}

	#if defined(__linux__)

	static void ClientThreadFunc() {
	std::string error;
	int fd = network_loopback_client(5038, SOCK_STREAM, &error);
	ASSERT_GE(fd, 0) << error;
	adb_sleep_ms(200);
	ASSERT_EQ(0, adb_close(fd));
	}

	struct CloseRdHupSocketArg {
	int socket_fd;
	};

	static void CloseRdHupSocketThreadFunc(CloseRdHupSocketArg* arg) {
	asocket* s = create_local_socket(arg->socket_fd);
	ASSERT_TRUE(s != nullptr);

	fdevent_loop();
	}

	// This test checks if we can close sockets in CLOSE_WAIT state.
	TEST_F(LocalSocketTest, close_socket_in_CLOSE_WAIT_state) {
	std::string error;
	int listen_fd = network_inaddr_any_server(5038, SOCK_STREAM, &error);
	ASSERT_GE(listen_fd, 0);

	adb_thread_t client_thread;
	ASSERT_TRUE(adb_thread_create(reinterpret_cast<void ()(void)>(ClientThreadFunc), nullptr,
	&client_thread));

	struct sockaddr addr;
	socklen_t alen;
	alen = sizeof(addr);
	int accept_fd = adb_socket_accept(listen_fd, &addr, &alen);
	ASSERT_GE(accept_fd, 0);
	CloseRdHupSocketArg arg;
	arg.socket_fd = accept_fd;

	PrepareThread();
	adb_thread_t thread;
	ASSERT_TRUE(adb_thread_create(reinterpret_cast<void ()(void)>(CloseRdHupSocketThreadFunc),
	&arg, &thread));

	// Wait until the fdevent_loop() starts.
	adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
	EXPECT_EQ(1u + GetAdditionalLocalSocketCount(), fdevent_installed_count());

	// Wait until the client closes its socket.
	ASSERT_TRUE(adb_thread_join(client_thread));

	adb_sleep_ms(SLEEP_FOR_FDEVENT_IN_MS);
	ASSERT_EQ(GetAdditionalLocalSocketCount(), fdevent_installed_count());
	TerminateThread(thread);
	}

	#endif // defined(__linux__)

	#if ADB_HOST

	// Checks that skip_host_serial(serial) returns a pointer to the part of \|serial\| which matches
	// \|expected\|, otherwise logs the failure to gtest.
	void VerifySkipHostSerial(std::string serial, const char* expected) {
	char* result = internal::skip_host_serial(&serial[0]);
	if (expected == nullptr) {
	EXPECT_EQ(nullptr, result);
	} else {
	EXPECT_STREQ(expected, result);
	}
	}

	// Check [tcp:\|udp:]<serial>[:<port>]:<command> format.
	TEST(socket_test, test_skip_host_serial) {
	for (const std::string& protocol : {"", "tcp:", "udp:"}) {
	VerifySkipHostSerial(protocol, nullptr);
	VerifySkipHostSerial(protocol + "foo", nullptr);

	VerifySkipHostSerial(protocol + "foo:bar", ":bar");
	VerifySkipHostSerial(protocol + "foo:bar:baz", ":bar:baz");

	VerifySkipHostSerial(protocol + "foo:123:bar", ":bar");
	VerifySkipHostSerial(protocol + "foo:123:456", ":456");
	VerifySkipHostSerial(protocol + "foo:123:bar:baz", ":bar:baz");

	// Don't register a port unless it's all numbers and ends with ':'.
	VerifySkipHostSerial(protocol + "foo:123", ":123");
	VerifySkipHostSerial(protocol + "foo:123bar:baz", ":123bar:baz");
	}
	}

	// Check <prefix>:<serial>:<command> format.
	TEST(socket_test, test_skip_host_serial_prefix) {
	for (const std::string& prefix : {"usb:", "product:", "model:", "device:"}) {
	VerifySkipHostSerial(prefix, nullptr);
	VerifySkipHostSerial(prefix + "foo", nullptr);

	VerifySkipHostSerial(prefix + "foo:bar", ":bar");
	VerifySkipHostSerial(prefix + "foo:bar:baz", ":bar:baz");
	VerifySkipHostSerial(prefix + "foo:123:bar", ":123:bar");
	}
	}

	#endif // ADB_HOST