Echo Server based on the legacy EthernetNetIf libraries used for a performance comparison with the new networking libraries
Dependencies: EthernetNetIf mbed
Fork of EchoServer by
TCPEchoHandler.cpp@1:7b4661a721c1, 2012-08-01 (annotated)
- Committer:
- emilmont
- Date:
- Wed Aug 01 16:25:14 2012 +0000
- Revision:
- 1:7b4661a721c1
- Parent:
- 0:fcd581e3ad7d
Echo Server based on the legacy EthernetNetIf libraries used for a performance comparison with the new networking libraries
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
naegawa | 0:fcd581e3ad7d | 1 | #include "TCPEchoHandler.h" |
naegawa | 0:fcd581e3ad7d | 2 | |
naegawa | 0:fcd581e3ad7d | 3 | // When the constructor's called, initialise the member variables |
naegawa | 0:fcd581e3ad7d | 4 | TCPEchoHandler::TCPEchoHandler(TCPSocket* tcpClientSocket) |
naegawa | 0:fcd581e3ad7d | 5 | : NetService() |
naegawa | 0:fcd581e3ad7d | 6 | , clientSocket(tcpClientSocket) |
naegawa | 0:fcd581e3ad7d | 7 | , closed(0) |
naegawa | 0:fcd581e3ad7d | 8 | , timeoutWatchdog() { |
naegawa | 0:fcd581e3ad7d | 9 | // Wire up the event handler on the client TCP socket |
naegawa | 0:fcd581e3ad7d | 10 | clientSocket->setOnEvent(this, &TCPEchoHandler::onTCPSocketEvent); |
naegawa | 0:fcd581e3ad7d | 11 | } |
naegawa | 0:fcd581e3ad7d | 12 | |
naegawa | 0:fcd581e3ad7d | 13 | TCPEchoHandler::~TCPEchoHandler() { |
naegawa | 0:fcd581e3ad7d | 14 | // Close the socket on destruction |
naegawa | 0:fcd581e3ad7d | 15 | close(); |
naegawa | 0:fcd581e3ad7d | 16 | } |
naegawa | 0:fcd581e3ad7d | 17 | |
naegawa | 0:fcd581e3ad7d | 18 | void TCPEchoHandler::onTCPSocketEvent(TCPSocketEvent e) { |
naegawa | 0:fcd581e3ad7d | 19 | switch (e) { |
naegawa | 0:fcd581e3ad7d | 20 | // If the socket is readable, do stuff |
naegawa | 0:fcd581e3ad7d | 21 | case TCPSOCKET_READABLE: |
naegawa | 0:fcd581e3ad7d | 22 | // Disable the timeout watchdog timer |
naegawa | 0:fcd581e3ad7d | 23 | timeoutWatchdog.detach(); |
naegawa | 0:fcd581e3ad7d | 24 | // Read in any available data into the buffer |
naegawa | 0:fcd581e3ad7d | 25 | char buff[128]; |
naegawa | 0:fcd581e3ad7d | 26 | while ( int len = clientSocket->recv(buff, 128) ) { |
naegawa | 0:fcd581e3ad7d | 27 | // And send straight back out again |
naegawa | 0:fcd581e3ad7d | 28 | clientSocket->send(buff, len); |
naegawa | 0:fcd581e3ad7d | 29 | } |
naegawa | 0:fcd581e3ad7d | 30 | // Reset timeout countdown |
naegawa | 0:fcd581e3ad7d | 31 | setTimeout(ECHO_TIMEOUT); |
naegawa | 0:fcd581e3ad7d | 32 | break; |
naegawa | 0:fcd581e3ad7d | 33 | case TCPSOCKET_CONTIMEOUT: |
naegawa | 0:fcd581e3ad7d | 34 | case TCPSOCKET_CONRST: |
naegawa | 0:fcd581e3ad7d | 35 | case TCPSOCKET_CONABRT: |
naegawa | 0:fcd581e3ad7d | 36 | case TCPSOCKET_ERROR: |
naegawa | 0:fcd581e3ad7d | 37 | case TCPSOCKET_DISCONNECTED: |
naegawa | 0:fcd581e3ad7d | 38 | // Close the socket on any terminal TCP event |
naegawa | 0:fcd581e3ad7d | 39 | close(); |
naegawa | 0:fcd581e3ad7d | 40 | break; |
naegawa | 0:fcd581e3ad7d | 41 | } |
naegawa | 0:fcd581e3ad7d | 42 | |
naegawa | 0:fcd581e3ad7d | 43 | } |
naegawa | 0:fcd581e3ad7d | 44 | |
naegawa | 0:fcd581e3ad7d | 45 | void TCPEchoHandler::close() { |
naegawa | 0:fcd581e3ad7d | 46 | // Prevent recursive calling or calling on an object being destructed by someone else |
naegawa | 0:fcd581e3ad7d | 47 | if ( closed ) |
naegawa | 0:fcd581e3ad7d | 48 | return; |
naegawa | 0:fcd581e3ad7d | 49 | closed = 1; |
naegawa | 0:fcd581e3ad7d | 50 | timeoutWatchdog.detach(); |
naegawa | 0:fcd581e3ad7d | 51 | if ( clientSocket ) { |
naegawa | 0:fcd581e3ad7d | 52 | clientSocket->resetOnEvent(); |
naegawa | 0:fcd581e3ad7d | 53 | clientSocket->close(); |
naegawa | 0:fcd581e3ad7d | 54 | delete clientSocket; //This fn might have been called by this socket (through an event), so DO NOT DESTROY IT HERE |
naegawa | 0:fcd581e3ad7d | 55 | } |
naegawa | 0:fcd581e3ad7d | 56 | // Flags this service as closed - will be destructed and deleted on |
naegawa | 0:fcd581e3ad7d | 57 | // the next call of NetService::poll() by Net::poll() |
naegawa | 0:fcd581e3ad7d | 58 | NetService::close(); |
naegawa | 0:fcd581e3ad7d | 59 | } |
naegawa | 0:fcd581e3ad7d | 60 | |
naegawa | 0:fcd581e3ad7d | 61 | void TCPEchoHandler::setTimeout(unsigned int timeout) { |
naegawa | 0:fcd581e3ad7d | 62 | // Attach our timeout handler to the timeout watchdog timer to close the socket if no activity |
naegawa | 0:fcd581e3ad7d | 63 | timeoutWatchdog.attach_us<TCPEchoHandler>(this, &TCPEchoHandler::onTimeout, ECHO_TIMEOUT * 1000); |
naegawa | 0:fcd581e3ad7d | 64 | } |
naegawa | 0:fcd581e3ad7d | 65 | |
naegawa | 0:fcd581e3ad7d | 66 | void TCPEchoHandler::onTimeout() { |
naegawa | 0:fcd581e3ad7d | 67 | // Nothing fancy, just close the socket and mark this class for destruction |
naegawa | 0:fcd581e3ad7d | 68 | close(); |
naegawa | 0:fcd581e3ad7d | 69 | } |