2 * Copyright 2016 Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include <folly/io/async/AsyncSocket.h>
19 #include <folly/io/async/test/BlockingSocket.h>
20 #include <folly/portability/Sockets.h>
22 #include <boost/scoped_array.hpp>
30 typedef std::function<void()> VoidCallback;
32 class ConnCallback : public folly::AsyncSocket::ConnectCallback {
35 : state(STATE_WAITING),
36 exception(folly::AsyncSocketException::UNKNOWN, "none") {}
38 void connectSuccess() noexcept override {
39 state = STATE_SUCCEEDED;
40 if (successCallback) {
45 void connectErr(const folly::AsyncSocketException& ex) noexcept override {
54 folly::AsyncSocketException exception;
55 VoidCallback successCallback;
56 VoidCallback errorCallback;
59 class WriteCallback : public folly::AsyncTransportWrapper::WriteCallback {
62 : state(STATE_WAITING),
64 exception(folly::AsyncSocketException::UNKNOWN, "none") {}
66 void writeSuccess() noexcept override {
67 state = STATE_SUCCEEDED;
68 if (successCallback) {
73 void writeErr(size_t nBytesWritten,
74 const folly::AsyncSocketException& ex) noexcept override {
75 LOG(ERROR) << ex.what();
77 this->bytesWritten = nBytesWritten;
86 folly::AsyncSocketException exception;
87 VoidCallback successCallback;
88 VoidCallback errorCallback;
91 class ReadCallback : public folly::AsyncTransportWrapper::ReadCallback {
93 explicit ReadCallback(size_t _maxBufferSz = 4096)
94 : state(STATE_WAITING),
95 exception(folly::AsyncSocketException::UNKNOWN, "none"),
97 maxBufferSz(_maxBufferSz) {}
100 for (std::vector<Buffer>::iterator it = buffers.begin();
105 currentBuffer.free();
108 void getReadBuffer(void** bufReturn, size_t* lenReturn) override {
109 if (!currentBuffer.buffer) {
110 currentBuffer.allocate(maxBufferSz);
112 *bufReturn = currentBuffer.buffer;
113 *lenReturn = currentBuffer.length;
116 void readDataAvailable(size_t len) noexcept override {
117 currentBuffer.length = len;
118 buffers.push_back(currentBuffer);
119 currentBuffer.reset();
120 if (dataAvailableCallback) {
121 dataAvailableCallback();
125 void readEOF() noexcept override {
126 state = STATE_SUCCEEDED;
129 void readErr(const folly::AsyncSocketException& ex) noexcept override {
130 state = STATE_FAILED;
134 void verifyData(const char* expected, size_t expectedLen) const {
136 for (size_t idx = 0; idx < buffers.size(); ++idx) {
137 const auto& buf = buffers[idx];
138 size_t cmpLen = std::min(buf.length, expectedLen - offset);
139 CHECK_EQ(memcmp(buf.buffer, expected + offset, cmpLen), 0);
140 CHECK_EQ(cmpLen, buf.length);
143 CHECK_EQ(offset, expectedLen);
146 size_t dataRead() const {
148 for (const auto& buf : buffers) {
156 Buffer() : buffer(nullptr), length(0) {}
157 Buffer(char* buf, size_t len) : buffer(buf), length(len) {}
163 void allocate(size_t len) {
164 assert(buffer == nullptr);
165 this->buffer = static_cast<char*>(malloc(len));
178 folly::AsyncSocketException exception;
179 std::vector<Buffer> buffers;
180 Buffer currentBuffer;
181 VoidCallback dataAvailableCallback;
182 const size_t maxBufferSz;
185 class BufferCallback : public folly::AsyncTransport::BufferCallback {
187 BufferCallback() : buffered_(false), bufferCleared_(false) {}
189 void onEgressBuffered() override { buffered_ = true; }
191 void onEgressBufferCleared() override { bufferCleared_ = true; }
193 bool hasBuffered() const { return buffered_; }
195 bool hasBufferCleared() const { return bufferCleared_; }
198 bool buffered_{false};
199 bool bufferCleared_{false};
207 // Create a TestServer.
208 // This immediately starts listening on an ephemeral port.
209 explicit TestServer(bool enableTFO = false, int bufSize = -1) : fd_(-1) {
210 namespace fsp = folly::portability::sockets;
211 fd_ = fsp::socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
213 throw folly::AsyncSocketException(
214 folly::AsyncSocketException::INTERNAL_ERROR,
215 "failed to create test server socket",
218 if (fcntl(fd_, F_SETFL, O_NONBLOCK) != 0) {
219 throw folly::AsyncSocketException(
220 folly::AsyncSocketException::INTERNAL_ERROR,
221 "failed to put test server socket in "
227 folly::detail::tfo_enable(fd_, 100);
231 struct addrinfo hints, *res;
232 memset(&hints, 0, sizeof(hints));
233 hints.ai_family = AF_INET;
234 hints.ai_socktype = SOCK_STREAM;
235 hints.ai_flags = AI_PASSIVE;
237 if (getaddrinfo(nullptr, "0", &hints, &res)) {
238 throw folly::AsyncSocketException(
239 folly::AsyncSocketException::INTERNAL_ERROR,
240 "Attempted to bind address to socket with "
250 setsockopt(fd_, SOL_SOCKET, SO_SNDBUF, &bufSize, sizeof(bufSize));
251 setsockopt(fd_, SOL_SOCKET, SO_RCVBUF, &bufSize, sizeof(bufSize));
254 if (bind(fd_, res->ai_addr, res->ai_addrlen)) {
255 throw folly::AsyncSocketException(
256 folly::AsyncSocketException::INTERNAL_ERROR,
257 "failed to bind to async server socket for port 10",
261 if (listen(fd_, 10) != 0) {
262 throw folly::AsyncSocketException(
263 folly::AsyncSocketException::INTERNAL_ERROR,
264 "failed to listen on test server socket",
268 address_.setFromLocalAddress(fd_);
269 // The local address will contain 0.0.0.0.
270 // Change it to 127.0.0.1, so it can be used to connect to the server
271 address_.setFromIpPort("127.0.0.1", address_.getPort());
280 // Get the address for connecting to the server
281 const folly::SocketAddress& getAddress() const {
285 int acceptFD(int timeout=50) {
286 namespace fsp = folly::portability::sockets;
290 int ret = poll(&pfd, 1, timeout);
292 throw folly::AsyncSocketException(
293 folly::AsyncSocketException::INTERNAL_ERROR,
294 "test server accept() timed out");
295 } else if (ret < 0) {
296 throw folly::AsyncSocketException(
297 folly::AsyncSocketException::INTERNAL_ERROR,
298 "test server accept() poll failed",
302 int acceptedFd = fsp::accept(fd_, nullptr, nullptr);
303 if (acceptedFd < 0) {
304 throw folly::AsyncSocketException(
305 folly::AsyncSocketException::INTERNAL_ERROR,
306 "test server accept() failed",
313 std::shared_ptr<BlockingSocket> accept(int timeout=50) {
314 int fd = acceptFD(timeout);
315 return std::shared_ptr<BlockingSocket>(new BlockingSocket(fd));
318 std::shared_ptr<folly::AsyncSocket> acceptAsync(folly::EventBase* evb,
320 int fd = acceptFD(timeout);
321 return folly::AsyncSocket::newSocket(evb, fd);
325 * Accept a connection, read data from it, and verify that it matches the
326 * data in the specified buffer.
328 void verifyConnection(const char* buf, size_t len) {
329 // accept a connection
330 std::shared_ptr<BlockingSocket> acceptedSocket = accept();
331 // read the data and compare it to the specified buffer
332 boost::scoped_array<uint8_t> readbuf(new uint8_t[len]);
333 acceptedSocket->readAll(readbuf.get(), len);
334 CHECK_EQ(memcmp(buf, readbuf.get(), len), 0);
335 // make sure we get EOF next
336 uint32_t bytesRead = acceptedSocket->read(readbuf.get(), len);
337 CHECK_EQ(bytesRead, 0);
342 folly::SocketAddress address_;