| /* |
| * Copyright 2012, 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. |
| */ |
| |
| //#define LOG_NDEBUG 0 |
| #define LOG_TAG "NetworkSession" |
| #include <utils/Log.h> |
| |
| #include <media/stagefright/foundation/ANetworkSession.h> |
| |
| #include <arpa/inet.h> |
| #include <fcntl.h> |
| #include <net/if.h> |
| #include <netdb.h> |
| #include <netinet/in.h> |
| #include <sys/ioctl.h> |
| #include <sys/socket.h> |
| #include <unistd.h> |
| |
| #include <media/stagefright/Utils.h> |
| #include <media/stagefright/foundation/ABuffer.h> |
| #include <media/stagefright/foundation/ADebug.h> |
| #include <media/stagefright/foundation/AMessage.h> |
| #include <media/stagefright/foundation/hexdump.h> |
| #include <media/stagefright/foundation/ParsedMessage.h> |
| |
| #include <list> |
| |
| namespace android { |
| |
| static const size_t kMaxUDPSize = 1500; |
| static const int32_t kMaxUDPRetries = 200; |
| |
| struct ANetworkSession::NetworkThread : public Thread { |
| NetworkThread(ANetworkSession *session); |
| |
| protected: |
| virtual ~NetworkThread(); |
| |
| private: |
| ANetworkSession *mSession; |
| |
| virtual bool threadLoop(); |
| |
| DISALLOW_EVIL_CONSTRUCTORS(NetworkThread); |
| }; |
| |
| struct ANetworkSession::Session : public RefBase { |
| enum Mode { |
| MODE_RTSP, |
| MODE_DATAGRAM, |
| MODE_WEBSOCKET, |
| }; |
| |
| enum State { |
| CONNECTING, |
| CONNECTED, |
| LISTENING_RTSP, |
| LISTENING_TCP_DGRAMS, |
| DATAGRAM, |
| }; |
| |
| Session(int32_t sessionID, |
| State state, |
| int s, |
| const sp<AMessage> ¬ify); |
| |
| int32_t sessionID() const; |
| int socket() const; |
| sp<AMessage> getNotificationMessage() const; |
| |
| bool isRTSPServer() const; |
| bool isTCPDatagramServer() const; |
| |
| bool wantsToRead(); |
| bool wantsToWrite(); |
| |
| status_t readMore(); |
| status_t writeMore(); |
| |
| status_t sendRequest( |
| const void *data, ssize_t size, bool timeValid, int64_t timeUs); |
| |
| void setMode(Mode mode); |
| |
| status_t switchToWebSocketMode(); |
| |
| protected: |
| virtual ~Session(); |
| |
| private: |
| enum { |
| FRAGMENT_FLAG_TIME_VALID = 1, |
| }; |
| struct Fragment { |
| uint32_t mFlags; |
| int64_t mTimeUs; |
| sp<ABuffer> mBuffer; |
| }; |
| |
| int32_t mSessionID; |
| State mState; |
| Mode mMode; |
| int mSocket; |
| sp<AMessage> mNotify; |
| bool mSawReceiveFailure, mSawSendFailure; |
| int32_t mUDPRetries; |
| |
| std::list<Fragment> mOutFragments; |
| |
| std::string mInBuffer; |
| |
| int64_t mLastStallReportUs; |
| |
| void notifyError(bool send, status_t err, const char *detail); |
| void notify(NotificationReason reason); |
| |
| void dumpFragmentStats(const Fragment &frag); |
| |
| DISALLOW_EVIL_CONSTRUCTORS(Session); |
| }; |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| ANetworkSession::NetworkThread::NetworkThread(ANetworkSession *session) |
| : mSession(session) { |
| } |
| |
| ANetworkSession::NetworkThread::~NetworkThread() { |
| } |
| |
| bool ANetworkSession::NetworkThread::threadLoop() { |
| mSession->threadLoop(); |
| |
| return true; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| ANetworkSession::Session::Session( |
| int32_t sessionID, |
| State state, |
| int s, |
| const sp<AMessage> ¬ify) |
| : mSessionID(sessionID), |
| mState(state), |
| mMode(MODE_DATAGRAM), |
| mSocket(s), |
| mNotify(notify), |
| mSawReceiveFailure(false), |
| mSawSendFailure(false), |
| mUDPRetries(kMaxUDPRetries), |
| mLastStallReportUs(-1ll) { |
| if (mState == CONNECTED) { |
| struct sockaddr_in localAddr; |
| socklen_t localAddrLen = sizeof(localAddr); |
| |
| int res = getsockname( |
| mSocket, (struct sockaddr *)&localAddr, &localAddrLen); |
| CHECK_GE(res, 0); |
| |
| struct sockaddr_in remoteAddr; |
| socklen_t remoteAddrLen = sizeof(remoteAddr); |
| |
| res = getpeername( |
| mSocket, (struct sockaddr *)&remoteAddr, &remoteAddrLen); |
| CHECK_GE(res, 0); |
| |
| in_addr_t addr = ntohl(localAddr.sin_addr.s_addr); |
| std::string localAddrString = StringPrintf( |
| "%d.%d.%d.%d", |
| (addr >> 24), |
| (addr >> 16) & 0xff, |
| (addr >> 8) & 0xff, |
| addr & 0xff); |
| |
| addr = ntohl(remoteAddr.sin_addr.s_addr); |
| std::string remoteAddrString = StringPrintf( |
| "%d.%d.%d.%d", |
| (addr >> 24), |
| (addr >> 16) & 0xff, |
| (addr >> 8) & 0xff, |
| addr & 0xff); |
| |
| sp<AMessage> msg = mNotify->dup(); |
| msg->setInt32("sessionID", mSessionID); |
| msg->setInt32("reason", kWhatClientConnected); |
| msg->setString("server-ip", localAddrString.c_str()); |
| msg->setInt32("server-port", ntohs(localAddr.sin_port)); |
| msg->setString("client-ip", remoteAddrString.c_str()); |
| msg->setInt32("client-port", ntohs(remoteAddr.sin_port)); |
| msg->post(); |
| } |
| } |
| |
| ANetworkSession::Session::~Session() { |
| ALOGV("Session %d gone", mSessionID); |
| |
| close(mSocket); |
| mSocket = -1; |
| } |
| |
| int32_t ANetworkSession::Session::sessionID() const { |
| return mSessionID; |
| } |
| |
| int ANetworkSession::Session::socket() const { |
| return mSocket; |
| } |
| |
| void ANetworkSession::Session::setMode(Mode mode) { |
| mMode = mode; |
| } |
| |
| status_t ANetworkSession::Session::switchToWebSocketMode() { |
| if (mState != CONNECTED || mMode != MODE_RTSP) { |
| return INVALID_OPERATION; |
| } |
| |
| mMode = MODE_WEBSOCKET; |
| |
| return OK; |
| } |
| |
| sp<AMessage> ANetworkSession::Session::getNotificationMessage() const { |
| return mNotify; |
| } |
| |
| bool ANetworkSession::Session::isRTSPServer() const { |
| return mState == LISTENING_RTSP; |
| } |
| |
| bool ANetworkSession::Session::isTCPDatagramServer() const { |
| return mState == LISTENING_TCP_DGRAMS; |
| } |
| |
| bool ANetworkSession::Session::wantsToRead() { |
| return !mSawReceiveFailure && mState != CONNECTING; |
| } |
| |
| bool ANetworkSession::Session::wantsToWrite() { |
| return !mSawSendFailure |
| && (mState == CONNECTING |
| || (mState == CONNECTED && !mOutFragments.empty()) |
| || (mState == DATAGRAM && !mOutFragments.empty())); |
| } |
| |
| status_t ANetworkSession::Session::readMore() { |
| if (mState == DATAGRAM) { |
| CHECK_EQ(mMode, MODE_DATAGRAM); |
| |
| status_t err; |
| do { |
| sp<ABuffer> buf = new ABuffer(kMaxUDPSize); |
| |
| struct sockaddr_in remoteAddr; |
| socklen_t remoteAddrLen = sizeof(remoteAddr); |
| |
| ssize_t n; |
| do { |
| n = recvfrom( |
| mSocket, buf->data(), buf->capacity(), 0, |
| (struct sockaddr *)&remoteAddr, &remoteAddrLen); |
| } while (n < 0 && errno == EINTR); |
| |
| err = OK; |
| if (n < 0) { |
| err = -errno; |
| } else if (n == 0) { |
| err = -ECONNRESET; |
| } else { |
| buf->setRange(0, n); |
| |
| int64_t nowUs = ALooper::GetNowUs(); |
| buf->meta()->setInt64("arrivalTimeUs", nowUs); |
| |
| sp<AMessage> notify = mNotify->dup(); |
| notify->setInt32("sessionID", mSessionID); |
| notify->setInt32("reason", kWhatDatagram); |
| |
| uint32_t ip = ntohl(remoteAddr.sin_addr.s_addr); |
| notify->setString( |
| "fromAddr", |
| StringPrintf( |
| "%u.%u.%u.%u", |
| ip >> 24, |
| (ip >> 16) & 0xff, |
| (ip >> 8) & 0xff, |
| ip & 0xff).c_str()); |
| |
| notify->setInt32("fromPort", ntohs(remoteAddr.sin_port)); |
| |
| notify->setBuffer("data", buf); |
| notify->post(); |
| } |
| } while (err == OK); |
| |
| if (err == -EAGAIN) { |
| err = OK; |
| } |
| |
| if (err != OK) { |
| if (!mUDPRetries) { |
| notifyError(false /* send */, err, "Recvfrom failed."); |
| mSawReceiveFailure = true; |
| } else { |
| mUDPRetries--; |
| ALOGE("Recvfrom failed, %d/%d retries left", |
| mUDPRetries, kMaxUDPRetries); |
| err = OK; |
| } |
| } else { |
| mUDPRetries = kMaxUDPRetries; |
| } |
| |
| return err; |
| } |
| |
| char tmp[512]; |
| ssize_t n; |
| do { |
| n = recv(mSocket, tmp, sizeof(tmp), 0); |
| } while (n < 0 && errno == EINTR); |
| |
| status_t err = OK; |
| |
| if (n > 0) { |
| mInBuffer.append(tmp, n); |
| |
| #if 0 |
| ALOGI("in:"); |
| hexdump(tmp, n); |
| #endif |
| } else if (n < 0) { |
| err = -errno; |
| } else { |
| err = -ECONNRESET; |
| } |
| |
| if (mMode == MODE_DATAGRAM) { |
| // TCP stream carrying 16-bit length-prefixed datagrams. |
| |
| while (mInBuffer.size() >= 2) { |
| size_t packetSize = U16_AT((const uint8_t *)mInBuffer.c_str()); |
| |
| if (mInBuffer.size() < packetSize + 2) { |
| break; |
| } |
| |
| sp<ABuffer> packet = new ABuffer(packetSize); |
| memcpy(packet->data(), mInBuffer.c_str() + 2, packetSize); |
| |
| int64_t nowUs = ALooper::GetNowUs(); |
| packet->meta()->setInt64("arrivalTimeUs", nowUs); |
| |
| sp<AMessage> notify = mNotify->dup(); |
| notify->setInt32("sessionID", mSessionID); |
| notify->setInt32("reason", kWhatDatagram); |
| notify->setBuffer("data", packet); |
| notify->post(); |
| |
| mInBuffer.erase(0, packetSize + 2); |
| } |
| } else if (mMode == MODE_RTSP) { |
| for (;;) { |
| size_t length; |
| |
| if (mInBuffer.size() > 0 && mInBuffer.c_str()[0] == '$') { |
| if (mInBuffer.size() < 4) { |
| break; |
| } |
| |
| length = U16_AT((const uint8_t *)mInBuffer.c_str() + 2); |
| |
| if (mInBuffer.size() < 4 + length) { |
| break; |
| } |
| |
| sp<AMessage> notify = mNotify->dup(); |
| notify->setInt32("sessionID", mSessionID); |
| notify->setInt32("reason", kWhatBinaryData); |
| notify->setInt32("channel", mInBuffer.c_str()[1]); |
| |
| sp<ABuffer> data = new ABuffer(length); |
| memcpy(data->data(), mInBuffer.c_str() + 4, length); |
| |
| int64_t nowUs = ALooper::GetNowUs(); |
| data->meta()->setInt64("arrivalTimeUs", nowUs); |
| |
| notify->setBuffer("data", data); |
| notify->post(); |
| |
| mInBuffer.erase(0, 4 + length); |
| continue; |
| } |
| |
| sp<ParsedMessage> msg = |
| ParsedMessage::Parse( |
| mInBuffer.c_str(), mInBuffer.size(), err != OK, &length); |
| |
| if (msg == NULL) { |
| break; |
| } |
| |
| sp<AMessage> notify = mNotify->dup(); |
| notify->setInt32("sessionID", mSessionID); |
| notify->setInt32("reason", kWhatData); |
| notify->setObject("data", msg); |
| notify->post(); |
| |
| #if 1 |
| // XXX The (old) dongle sends the wrong content length header on a |
| // SET_PARAMETER request that signals a "wfd_idr_request". |
| // (17 instead of 19). |
| const char *content = msg->getContent(); |
| if (content |
| && !memcmp(content, "wfd_idr_request\r\n", 17) |
| && length >= 19 |
| && mInBuffer.c_str()[length] == '\r' |
| && mInBuffer.c_str()[length + 1] == '\n') { |
| length += 2; |
| } |
| #endif |
| |
| mInBuffer.erase(0, length); |
| |
| if (err != OK) { |
| break; |
| } |
| } |
| } else { |
| CHECK_EQ(mMode, MODE_WEBSOCKET); |
| |
| const uint8_t *data = (const uint8_t *)mInBuffer.c_str(); |
| // hexdump(data, mInBuffer.size()); |
| |
| while (mInBuffer.size() >= 2) { |
| size_t offset = 2; |
| |
| size_t payloadLen = data[1] & 0x7f; |
| if (payloadLen == 126) { |
| if (offset + 2 > mInBuffer.size()) { |
| break; |
| } |
| |
| payloadLen = U16_AT(&data[offset]); |
| offset += 2; |
| } else if (payloadLen == 127) { |
| if (offset + 8 > mInBuffer.size()) { |
| break; |
| } |
| |
| payloadLen = U64_AT(&data[offset]); |
| |
| offset += 8; |
| } |
| |
| uint32_t mask = 0; |
| if (data[1] & 0x80) { |
| // MASK==1 |
| if (offset + 4 > mInBuffer.size()) { |
| break; |
| } |
| |
| mask = U32_AT(&data[offset]); |
| offset += 4; |
| } |
| |
| if (offset + payloadLen > mInBuffer.size()) { |
| break; |
| } |
| |
| // We have the full message. |
| |
| sp<ABuffer> packet = new ABuffer(payloadLen); |
| memcpy(packet->data(), &data[offset], payloadLen); |
| |
| if (mask != 0) { |
| for (size_t i = 0; i < payloadLen; ++i) { |
| packet->data()[i] = |
| data[offset + i] |
| ^ ((mask >> (8 * (3 - (i % 4)))) & 0xff); |
| } |
| } |
| |
| sp<AMessage> notify = mNotify->dup(); |
| notify->setInt32("sessionID", mSessionID); |
| notify->setInt32("reason", kWhatWebSocketMessage); |
| notify->setBuffer("data", packet); |
| notify->setInt32("headerByte", data[0]); |
| notify->post(); |
| |
| mInBuffer.erase(0, offset + payloadLen); |
| } |
| } |
| |
| if (err != OK) { |
| notifyError(false /* send */, err, "Recv failed."); |
| mSawReceiveFailure = true; |
| } |
| |
| return err; |
| } |
| |
| void ANetworkSession::Session::dumpFragmentStats(const Fragment & /* frag */) { |
| #if 0 |
| int64_t nowUs = ALooper::GetNowUs(); |
| int64_t delayMs = (nowUs - frag.mTimeUs) / 1000ll; |
| |
| static const int64_t kMinDelayMs = 0; |
| static const int64_t kMaxDelayMs = 300; |
| |
| const char *kPattern = "########################################"; |
| size_t kPatternSize = strlen(kPattern); |
| |
| int n = (kPatternSize * (delayMs - kMinDelayMs)) |
| / (kMaxDelayMs - kMinDelayMs); |
| |
| if (n < 0) { |
| n = 0; |
| } else if ((size_t)n > kPatternSize) { |
| n = kPatternSize; |
| } |
| |
| ALOGI("[%lld]: (%4lld ms) %s\n", |
| frag.mTimeUs / 1000, |
| delayMs, |
| kPattern + kPatternSize - n); |
| #endif |
| } |
| |
| status_t ANetworkSession::Session::writeMore() { |
| if (mState == DATAGRAM) { |
| CHECK(!mOutFragments.empty()); |
| |
| status_t err; |
| do { |
| const Fragment &frag = *mOutFragments.begin(); |
| const sp<ABuffer> &datagram = frag.mBuffer; |
| |
| ssize_t n; |
| do { |
| n = send(mSocket, datagram->data(), datagram->size(), 0); |
| } while (n < 0 && errno == EINTR); |
| |
| err = OK; |
| |
| if (n > 0) { |
| if (frag.mFlags & FRAGMENT_FLAG_TIME_VALID) { |
| dumpFragmentStats(frag); |
| } |
| |
| mOutFragments.erase(mOutFragments.begin()); |
| } else if (n < 0) { |
| err = -errno; |
| } else if (n == 0) { |
| err = -ECONNRESET; |
| } |
| } while (err == OK && !mOutFragments.empty()); |
| |
| if (err == -EAGAIN) { |
| if (!mOutFragments.empty()) { |
| ALOGI("%d datagrams remain queued.", mOutFragments.size()); |
| } |
| err = OK; |
| } |
| |
| if (err != OK) { |
| if (!mUDPRetries) { |
| notifyError(true /* send */, err, "Send datagram failed."); |
| mSawSendFailure = true; |
| } else { |
| mUDPRetries--; |
| ALOGE("Send datagram failed, %d/%d retries left", |
| mUDPRetries, kMaxUDPRetries); |
| err = OK; |
| } |
| } else { |
| mUDPRetries = kMaxUDPRetries; |
| } |
| |
| return err; |
| } |
| |
| if (mState == CONNECTING) { |
| int err; |
| socklen_t optionLen = sizeof(err); |
| CHECK_EQ(getsockopt(mSocket, SOL_SOCKET, SO_ERROR, &err, &optionLen), 0); |
| CHECK_EQ(optionLen, (socklen_t)sizeof(err)); |
| |
| if (err != 0) { |
| notifyError(kWhatError, -err, "Connection failed"); |
| mSawSendFailure = true; |
| |
| return -err; |
| } |
| |
| mState = CONNECTED; |
| notify(kWhatConnected); |
| |
| return OK; |
| } |
| |
| CHECK_EQ(mState, CONNECTED); |
| CHECK(!mOutFragments.empty()); |
| |
| ssize_t n = 0; |
| while (!mOutFragments.empty()) { |
| const Fragment &frag = *mOutFragments.begin(); |
| |
| do { |
| n = send(mSocket, frag.mBuffer->data(), frag.mBuffer->size(), 0); |
| } while (n < 0 && errno == EINTR); |
| |
| if (n <= 0) { |
| break; |
| } |
| |
| frag.mBuffer->setRange( |
| frag.mBuffer->offset() + n, frag.mBuffer->size() - n); |
| |
| if (frag.mBuffer->size() > 0) { |
| break; |
| } |
| |
| if (frag.mFlags & FRAGMENT_FLAG_TIME_VALID) { |
| dumpFragmentStats(frag); |
| } |
| |
| mOutFragments.erase(mOutFragments.begin()); |
| } |
| |
| status_t err = OK; |
| |
| if (n < 0) { |
| err = -errno; |
| } else if (n == 0) { |
| err = -ECONNRESET; |
| } |
| |
| if (err != OK) { |
| notifyError(true /* send */, err, "Send failed."); |
| mSawSendFailure = true; |
| } |
| |
| #if 0 |
| int numBytesQueued; |
| int res = ioctl(mSocket, SIOCOUTQ, &numBytesQueued); |
| if (res == 0 && numBytesQueued > 50 * 1024) { |
| if (numBytesQueued > 409600) { |
| ALOGW("!!! numBytesQueued = %d", numBytesQueued); |
| } |
| |
| int64_t nowUs = ALooper::GetNowUs(); |
| |
| if (mLastStallReportUs < 0ll |
| || nowUs > mLastStallReportUs + 100000ll) { |
| sp<AMessage> msg = mNotify->dup(); |
| msg->setInt32("sessionID", mSessionID); |
| msg->setInt32("reason", kWhatNetworkStall); |
| msg->setSize("numBytesQueued", numBytesQueued); |
| msg->post(); |
| |
| mLastStallReportUs = nowUs; |
| } |
| } |
| #endif |
| |
| return err; |
| } |
| |
| status_t ANetworkSession::Session::sendRequest( |
| const void *data, ssize_t size, bool timeValid, int64_t timeUs) { |
| CHECK(mState == CONNECTED || mState == DATAGRAM); |
| |
| if (size < 0) { |
| size = strlen((const char *)data); |
| } |
| |
| if (size == 0) { |
| return OK; |
| } |
| |
| sp<ABuffer> buffer; |
| |
| if (mState == CONNECTED && mMode == MODE_DATAGRAM) { |
| CHECK_LE(size, 65535); |
| |
| buffer = new ABuffer(size + 2); |
| buffer->data()[0] = size >> 8; |
| buffer->data()[1] = size & 0xff; |
| memcpy(buffer->data() + 2, data, size); |
| } else if (mState == CONNECTED && mMode == MODE_WEBSOCKET) { |
| static const bool kUseMask = false; // Chromium doesn't like it. |
| |
| size_t numHeaderBytes = 2 + (kUseMask ? 4 : 0); |
| if (size > 65535) { |
| numHeaderBytes += 8; |
| } else if (size > 125) { |
| numHeaderBytes += 2; |
| } |
| |
| buffer = new ABuffer(numHeaderBytes + size); |
| buffer->data()[0] = 0x81; // FIN==1 | opcode=1 (text) |
| buffer->data()[1] = kUseMask ? 0x80 : 0x00; |
| |
| if (size > 65535) { |
| buffer->data()[1] |= 127; |
| buffer->data()[2] = 0x00; |
| buffer->data()[3] = 0x00; |
| buffer->data()[4] = 0x00; |
| buffer->data()[5] = 0x00; |
| buffer->data()[6] = (size >> 24) & 0xff; |
| buffer->data()[7] = (size >> 16) & 0xff; |
| buffer->data()[8] = (size >> 8) & 0xff; |
| buffer->data()[9] = size & 0xff; |
| } else if (size > 125) { |
| buffer->data()[1] |= 126; |
| buffer->data()[2] = (size >> 8) & 0xff; |
| buffer->data()[3] = size & 0xff; |
| } else { |
| buffer->data()[1] |= size; |
| } |
| |
| if (kUseMask) { |
| uint32_t mask = rand(); |
| |
| buffer->data()[numHeaderBytes - 4] = (mask >> 24) & 0xff; |
| buffer->data()[numHeaderBytes - 3] = (mask >> 16) & 0xff; |
| buffer->data()[numHeaderBytes - 2] = (mask >> 8) & 0xff; |
| buffer->data()[numHeaderBytes - 1] = mask & 0xff; |
| |
| for (size_t i = 0; i < (size_t)size; ++i) { |
| buffer->data()[numHeaderBytes + i] = |
| ((const uint8_t *)data)[i] |
| ^ ((mask >> (8 * (3 - (i % 4)))) & 0xff); |
| } |
| } else { |
| memcpy(buffer->data() + numHeaderBytes, data, size); |
| } |
| } else { |
| buffer = new ABuffer(size); |
| memcpy(buffer->data(), data, size); |
| } |
| |
| Fragment frag; |
| |
| frag.mFlags = 0; |
| if (timeValid) { |
| frag.mFlags = FRAGMENT_FLAG_TIME_VALID; |
| frag.mTimeUs = timeUs; |
| } |
| |
| frag.mBuffer = buffer; |
| |
| mOutFragments.push_back(frag); |
| |
| return OK; |
| } |
| |
| void ANetworkSession::Session::notifyError( |
| bool send, status_t err, const char *detail) { |
| sp<AMessage> msg = mNotify->dup(); |
| msg->setInt32("sessionID", mSessionID); |
| msg->setInt32("reason", kWhatError); |
| msg->setInt32("send", send); |
| msg->setInt32("err", err); |
| msg->setString("detail", detail); |
| msg->post(); |
| } |
| |
| void ANetworkSession::Session::notify(NotificationReason reason) { |
| sp<AMessage> msg = mNotify->dup(); |
| msg->setInt32("sessionID", mSessionID); |
| msg->setInt32("reason", reason); |
| msg->post(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| ANetworkSession::ANetworkSession() |
| : mNextSessionID(1) { |
| mPipeFd[0] = mPipeFd[1] = -1; |
| } |
| |
| ANetworkSession::~ANetworkSession() { |
| stop(); |
| } |
| |
| status_t ANetworkSession::start() { |
| if (mThread != NULL) { |
| return INVALID_OPERATION; |
| } |
| |
| int res = pipe(mPipeFd); |
| if (res != 0) { |
| mPipeFd[0] = mPipeFd[1] = -1; |
| return -errno; |
| } |
| |
| mThread = new NetworkThread(this); |
| |
| status_t err = mThread->run("ANetworkSession"); |
| |
| if (err != OK) { |
| mThread.clear(); |
| |
| close(mPipeFd[0]); |
| close(mPipeFd[1]); |
| mPipeFd[0] = mPipeFd[1] = -1; |
| |
| return err; |
| } |
| |
| return OK; |
| } |
| |
| status_t ANetworkSession::stop() { |
| if (mThread == NULL) { |
| return INVALID_OPERATION; |
| } |
| |
| mThread->requestExit(); |
| interrupt(); |
| mThread->requestExitAndWait(); |
| |
| mThread.clear(); |
| |
| close(mPipeFd[0]); |
| close(mPipeFd[1]); |
| mPipeFd[0] = mPipeFd[1] = -1; |
| |
| return OK; |
| } |
| |
| status_t ANetworkSession::createRTSPClient( |
| const char *host, unsigned port, const sp<AMessage> ¬ify, |
| int32_t *sessionID) { |
| return createClientOrServer( |
| kModeCreateRTSPClient, |
| NULL /* addr */, |
| 0 /* port */, |
| host, |
| port, |
| notify, |
| sessionID); |
| } |
| |
| status_t ANetworkSession::createRTSPServer( |
| const struct in_addr &addr, unsigned port, |
| const sp<AMessage> ¬ify, int32_t *sessionID) { |
| return createClientOrServer( |
| kModeCreateRTSPServer, |
| &addr, |
| port, |
| NULL /* remoteHost */, |
| 0 /* remotePort */, |
| notify, |
| sessionID); |
| } |
| |
| status_t ANetworkSession::createUDPSession( |
| unsigned localPort, const sp<AMessage> ¬ify, int32_t *sessionID) { |
| return createUDPSession(localPort, NULL, 0, notify, sessionID); |
| } |
| |
| status_t ANetworkSession::createUDPSession( |
| unsigned localPort, |
| const char *remoteHost, |
| unsigned remotePort, |
| const sp<AMessage> ¬ify, |
| int32_t *sessionID) { |
| return createClientOrServer( |
| kModeCreateUDPSession, |
| NULL /* addr */, |
| localPort, |
| remoteHost, |
| remotePort, |
| notify, |
| sessionID); |
| } |
| |
| status_t ANetworkSession::createTCPDatagramSession( |
| const struct in_addr &addr, unsigned port, |
| const sp<AMessage> ¬ify, int32_t *sessionID) { |
| return createClientOrServer( |
| kModeCreateTCPDatagramSessionPassive, |
| &addr, |
| port, |
| NULL /* remoteHost */, |
| 0 /* remotePort */, |
| notify, |
| sessionID); |
| } |
| |
| status_t ANetworkSession::createTCPDatagramSession( |
| unsigned localPort, |
| const char *remoteHost, |
| unsigned remotePort, |
| const sp<AMessage> ¬ify, |
| int32_t *sessionID) { |
| return createClientOrServer( |
| kModeCreateTCPDatagramSessionActive, |
| NULL /* addr */, |
| localPort, |
| remoteHost, |
| remotePort, |
| notify, |
| sessionID); |
| } |
| |
| status_t ANetworkSession::destroySession(int32_t sessionID) { |
| Mutex::Autolock autoLock(mLock); |
| |
| auto it = mSessions.find(sessionID); |
| |
| if (it == mSessions.end()) { |
| return -ENOENT; |
| } |
| |
| mSessions.erase(it); |
| |
| interrupt(); |
| |
| return OK; |
| } |
| |
| // static |
| status_t ANetworkSession::MakeSocketNonBlocking(int s) { |
| int flags = fcntl(s, F_GETFL, 0); |
| if (flags < 0) { |
| flags = 0; |
| } |
| |
| int res = fcntl(s, F_SETFL, flags | O_NONBLOCK); |
| if (res < 0) { |
| return -errno; |
| } |
| |
| return OK; |
| } |
| |
| status_t ANetworkSession::createClientOrServer( |
| Mode mode, |
| const struct in_addr *localAddr, |
| unsigned port, |
| const char *remoteHost, |
| unsigned remotePort, |
| const sp<AMessage> ¬ify, |
| int32_t *sessionID) { |
| Mutex::Autolock autoLock(mLock); |
| |
| *sessionID = 0; |
| status_t err = OK; |
| int s, res; |
| sp<Session> session; |
| |
| s = socket( |
| AF_INET, |
| (mode == kModeCreateUDPSession) ? SOCK_DGRAM : SOCK_STREAM, |
| 0); |
| |
| if (s < 0) { |
| err = -errno; |
| goto bail; |
| } |
| |
| if (mode == kModeCreateRTSPServer |
| || mode == kModeCreateTCPDatagramSessionPassive) { |
| const int yes = 1; |
| res = setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)); |
| |
| if (res < 0) { |
| err = -errno; |
| goto bail2; |
| } |
| } |
| |
| if (mode == kModeCreateUDPSession) { |
| int size = 256 * 1024; |
| |
| res = setsockopt(s, SOL_SOCKET, SO_RCVBUF, &size, sizeof(size)); |
| |
| if (res < 0) { |
| err = -errno; |
| goto bail2; |
| } |
| |
| res = setsockopt(s, SOL_SOCKET, SO_SNDBUF, &size, sizeof(size)); |
| |
| if (res < 0) { |
| err = -errno; |
| goto bail2; |
| } |
| } else if (mode == kModeCreateTCPDatagramSessionActive) { |
| #if 0 |
| int flag = 1; |
| res = setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &flag, sizeof(flag)); |
| |
| if (res < 0) { |
| err = -errno; |
| goto bail2; |
| } |
| #endif |
| |
| int tos = 224; // VOICE |
| res = setsockopt(s, IPPROTO_IP, IP_TOS, &tos, sizeof(tos)); |
| |
| if (res < 0) { |
| err = -errno; |
| goto bail2; |
| } |
| } |
| |
| err = MakeSocketNonBlocking(s); |
| |
| if (err != OK) { |
| goto bail2; |
| } |
| |
| struct sockaddr_in addr; |
| memset(addr.sin_zero, 0, sizeof(addr.sin_zero)); |
| addr.sin_family = AF_INET; |
| |
| if (mode == kModeCreateRTSPClient |
| || mode == kModeCreateTCPDatagramSessionActive) { |
| struct hostent *ent= gethostbyname(remoteHost); |
| if (ent == NULL) { |
| err = -h_errno; |
| goto bail2; |
| } |
| |
| addr.sin_addr.s_addr = *(in_addr_t *)ent->h_addr; |
| addr.sin_port = htons(remotePort); |
| } else if (localAddr != NULL) { |
| addr.sin_addr = *localAddr; |
| addr.sin_port = htons(port); |
| } else { |
| addr.sin_addr.s_addr = htonl(INADDR_ANY); |
| addr.sin_port = htons(port); |
| } |
| |
| if (mode == kModeCreateRTSPClient |
| || mode == kModeCreateTCPDatagramSessionActive) { |
| in_addr_t x = ntohl(addr.sin_addr.s_addr); |
| ALOGI("connecting socket %d to %d.%d.%d.%d:%d", |
| s, |
| (x >> 24), |
| (x >> 16) & 0xff, |
| (x >> 8) & 0xff, |
| x & 0xff, |
| ntohs(addr.sin_port)); |
| |
| res = connect(s, (const struct sockaddr *)&addr, sizeof(addr)); |
| |
| CHECK_LT(res, 0); |
| if (errno == EINPROGRESS) { |
| res = 0; |
| } |
| } else { |
| res = bind(s, (const struct sockaddr *)&addr, sizeof(addr)); |
| |
| if (res == 0) { |
| if (mode == kModeCreateRTSPServer |
| || mode == kModeCreateTCPDatagramSessionPassive) { |
| res = listen(s, 4); |
| } else { |
| CHECK_EQ(mode, kModeCreateUDPSession); |
| |
| if (remoteHost != NULL) { |
| struct sockaddr_in remoteAddr; |
| memset(remoteAddr.sin_zero, 0, sizeof(remoteAddr.sin_zero)); |
| remoteAddr.sin_family = AF_INET; |
| remoteAddr.sin_port = htons(remotePort); |
| |
| struct hostent *ent= gethostbyname(remoteHost); |
| if (ent == NULL) { |
| err = -h_errno; |
| goto bail2; |
| } |
| |
| remoteAddr.sin_addr.s_addr = *(in_addr_t *)ent->h_addr; |
| |
| res = connect( |
| s, |
| (const struct sockaddr *)&remoteAddr, |
| sizeof(remoteAddr)); |
| } |
| } |
| } |
| } |
| |
| if (res < 0) { |
| err = -errno; |
| goto bail2; |
| } |
| |
| Session::State state; |
| switch (mode) { |
| case kModeCreateRTSPClient: |
| state = Session::CONNECTING; |
| break; |
| |
| case kModeCreateTCPDatagramSessionActive: |
| state = Session::CONNECTING; |
| break; |
| |
| case kModeCreateTCPDatagramSessionPassive: |
| state = Session::LISTENING_TCP_DGRAMS; |
| break; |
| |
| case kModeCreateRTSPServer: |
| state = Session::LISTENING_RTSP; |
| break; |
| |
| default: |
| CHECK_EQ(mode, kModeCreateUDPSession); |
| state = Session::DATAGRAM; |
| break; |
| } |
| |
| session = new Session( |
| mNextSessionID++, |
| state, |
| s, |
| notify); |
| |
| if (mode == kModeCreateTCPDatagramSessionActive) { |
| session->setMode(Session::MODE_DATAGRAM); |
| } else if (mode == kModeCreateRTSPClient) { |
| session->setMode(Session::MODE_RTSP); |
| } |
| |
| mSessions[session->sessionID()] = session; |
| |
| interrupt(); |
| |
| *sessionID = session->sessionID(); |
| |
| goto bail; |
| |
| bail2: |
| close(s); |
| s = -1; |
| |
| bail: |
| return err; |
| } |
| |
| status_t ANetworkSession::connectUDPSession( |
| int32_t sessionID, const char *remoteHost, unsigned remotePort) { |
| Mutex::Autolock autoLock(mLock); |
| |
| auto it = mSessions.find(sessionID); |
| |
| if (it == mSessions.end()) { |
| return -ENOENT; |
| } |
| |
| const sp<Session> session = it->second; |
| int s = session->socket(); |
| |
| struct sockaddr_in remoteAddr; |
| memset(remoteAddr.sin_zero, 0, sizeof(remoteAddr.sin_zero)); |
| remoteAddr.sin_family = AF_INET; |
| remoteAddr.sin_port = htons(remotePort); |
| |
| status_t err = OK; |
| struct hostent *ent = gethostbyname(remoteHost); |
| if (ent == NULL) { |
| err = -h_errno; |
| } else { |
| remoteAddr.sin_addr.s_addr = *(in_addr_t *)ent->h_addr; |
| |
| int res = connect( |
| s, |
| (const struct sockaddr *)&remoteAddr, |
| sizeof(remoteAddr)); |
| |
| if (res < 0) { |
| err = -errno; |
| } |
| } |
| |
| return err; |
| } |
| |
| status_t ANetworkSession::sendRequest( |
| int32_t sessionID, const void *data, ssize_t size, |
| bool timeValid, int64_t timeUs) { |
| Mutex::Autolock autoLock(mLock); |
| |
| auto it = mSessions.find(sessionID); |
| |
| if (it == mSessions.end()) { |
| return -ENOENT; |
| } |
| |
| const sp<Session> session = it->second; |
| |
| status_t err = session->sendRequest(data, size, timeValid, timeUs); |
| |
| interrupt(); |
| |
| return err; |
| } |
| |
| status_t ANetworkSession::switchToWebSocketMode(int32_t sessionID) { |
| Mutex::Autolock autoLock(mLock); |
| |
| auto it = mSessions.find(sessionID); |
| |
| if (it == mSessions.end()) { |
| return -ENOENT; |
| } |
| |
| const sp<Session> session = it->second; |
| return session->switchToWebSocketMode(); |
| } |
| |
| void ANetworkSession::interrupt() { |
| static const char dummy = 0; |
| |
| ssize_t n; |
| do { |
| n = write(mPipeFd[1], &dummy, 1); |
| } while (n < 0 && errno == EINTR); |
| |
| if (n < 0) { |
| ALOGW("Error writing to pipe (%s)", strerror(errno)); |
| } |
| } |
| |
| void ANetworkSession::threadLoop() { |
| fd_set rs, ws; |
| FD_ZERO(&rs); |
| FD_ZERO(&ws); |
| |
| FD_SET(mPipeFd[0], &rs); |
| int maxFd = mPipeFd[0]; |
| |
| { |
| Mutex::Autolock autoLock(mLock); |
| |
| for (const auto &pair : mSessions) { |
| const sp<Session> &session = pair.second; |
| |
| int s = session->socket(); |
| |
| if (s < 0) { |
| continue; |
| } |
| |
| if (session->wantsToRead()) { |
| FD_SET(s, &rs); |
| if (s > maxFd) { |
| maxFd = s; |
| } |
| } |
| |
| if (session->wantsToWrite()) { |
| FD_SET(s, &ws); |
| if (s > maxFd) { |
| maxFd = s; |
| } |
| } |
| } |
| } |
| |
| int res = select(maxFd + 1, &rs, &ws, NULL, NULL /* tv */); |
| |
| if (res == 0) { |
| return; |
| } |
| |
| if (res < 0) { |
| if (errno == EINTR) { |
| return; |
| } |
| |
| ALOGE("select failed w/ error %d (%s)", errno, strerror(errno)); |
| return; |
| } |
| |
| if (FD_ISSET(mPipeFd[0], &rs)) { |
| char c; |
| ssize_t n; |
| do { |
| n = read(mPipeFd[0], &c, 1); |
| } while (n < 0 && errno == EINTR); |
| |
| if (n < 0) { |
| ALOGW("Error reading from pipe (%s)", strerror(errno)); |
| } |
| |
| --res; |
| } |
| |
| { |
| Mutex::Autolock autoLock(mLock); |
| |
| std::list<sp<Session>> sessionsToAdd; |
| |
| for (const auto &pair : mSessions) { |
| if (res <= 0) { |
| break; |
| } |
| |
| const sp<Session> &session = pair.second; |
| |
| int s = session->socket(); |
| |
| if (s < 0) { |
| continue; |
| } |
| |
| if (FD_ISSET(s, &rs) || FD_ISSET(s, &ws)) { |
| --res; |
| } |
| |
| if (FD_ISSET(s, &rs)) { |
| if (session->isRTSPServer() || session->isTCPDatagramServer()) { |
| struct sockaddr_in remoteAddr; |
| socklen_t remoteAddrLen = sizeof(remoteAddr); |
| |
| int clientSocket = accept( |
| s, (struct sockaddr *)&remoteAddr, &remoteAddrLen); |
| |
| if (clientSocket >= 0) { |
| status_t err = MakeSocketNonBlocking(clientSocket); |
| |
| if (err != OK) { |
| ALOGE("Unable to make client socket non blocking, " |
| "failed w/ error %d (%s)", |
| err, strerror(-err)); |
| |
| close(clientSocket); |
| clientSocket = -1; |
| } else { |
| in_addr_t addr = ntohl(remoteAddr.sin_addr.s_addr); |
| |
| ALOGI("incoming connection from %d.%d.%d.%d:%d " |
| "(socket %d)", |
| (addr >> 24), |
| (addr >> 16) & 0xff, |
| (addr >> 8) & 0xff, |
| addr & 0xff, |
| ntohs(remoteAddr.sin_port), |
| clientSocket); |
| |
| sp<Session> clientSession = |
| new Session( |
| mNextSessionID++, |
| Session::CONNECTED, |
| clientSocket, |
| session->getNotificationMessage()); |
| |
| clientSession->setMode( |
| session->isRTSPServer() |
| ? Session::MODE_RTSP |
| : Session::MODE_DATAGRAM); |
| |
| sessionsToAdd.push_back(clientSession); |
| } |
| } else { |
| ALOGE("accept returned error %d (%s)", |
| errno, strerror(errno)); |
| } |
| } else { |
| status_t err = session->readMore(); |
| if (err != OK) { |
| ALOGE("readMore on socket %d failed w/ error %d (%s)", |
| s, err, strerror(-err)); |
| } |
| } |
| } |
| |
| if (FD_ISSET(s, &ws)) { |
| status_t err = session->writeMore(); |
| if (err != OK) { |
| ALOGE("writeMore on socket %d failed w/ error %d (%s)", |
| s, err, strerror(-err)); |
| } |
| } |
| } |
| |
| while (!sessionsToAdd.empty()) { |
| sp<Session> session = *sessionsToAdd.begin(); |
| sessionsToAdd.erase(sessionsToAdd.begin()); |
| |
| mSessions[session->sessionID()] = session; |
| |
| ALOGI("added clientSession %d", session->sessionID()); |
| } |
| } |
| } |
| |
| } // namespace android |
| |
