Example program with HTTPServer and sensor data streaming over TCPSockets, using Donatien Garnier's Net APIs and services code on top of LWIP. Files StreamServer.h and .cpp encapsulate streaming over TCPSockets. Broadcast is done by sendToAll(), and all incoming data is echoed back to the client. Echo code can be replaced with some remote control of the streaming interface. See main() that shows how to periodically send some data to all subscribed clients. To subscribe, a client should open a socket at <mbed_ip> port 123. I used few lines in TCL code to set up a quick sink for the data. HTTP files are served on port 80 concurrently to the streaming.

Dependencies:   mbed

Committer:
iva2k
Date:
Sat Jun 12 06:01:50 2010 +0000
Revision:
0:e614f7875b60

        

Who changed what in which revision?

UserRevisionLine numberNew contents of line
iva2k 0:e614f7875b60 1
iva2k 0:e614f7875b60 2 /*
iva2k 0:e614f7875b60 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
iva2k 0:e614f7875b60 4
iva2k 0:e614f7875b60 5 Permission is hereby granted, free of charge, to any person obtaining a copy
iva2k 0:e614f7875b60 6 of this software and associated documentation files (the "Software"), to deal
iva2k 0:e614f7875b60 7 in the Software without restriction, including without limitation the rights
iva2k 0:e614f7875b60 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
iva2k 0:e614f7875b60 9 copies of the Software, and to permit persons to whom the Software is
iva2k 0:e614f7875b60 10 furnished to do so, subject to the following conditions:
iva2k 0:e614f7875b60 11
iva2k 0:e614f7875b60 12 The above copyright notice and this permission notice shall be included in
iva2k 0:e614f7875b60 13 all copies or substantial portions of the Software.
iva2k 0:e614f7875b60 14
iva2k 0:e614f7875b60 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
iva2k 0:e614f7875b60 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
iva2k 0:e614f7875b60 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
iva2k 0:e614f7875b60 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
iva2k 0:e614f7875b60 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
iva2k 0:e614f7875b60 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
iva2k 0:e614f7875b60 21 THE SOFTWARE.
iva2k 0:e614f7875b60 22 */
iva2k 0:e614f7875b60 23
iva2k 0:e614f7875b60 24 #ifndef SMTP_CLIENT_H
iva2k 0:e614f7875b60 25 #define SMTP_CLIENT_H
iva2k 0:e614f7875b60 26
iva2k 0:e614f7875b60 27 class EmailMessage;
iva2k 0:e614f7875b60 28
iva2k 0:e614f7875b60 29 #include "if/net/net.h"
iva2k 0:e614f7875b60 30 #include "api/TCPSocket.h"
iva2k 0:e614f7875b60 31 #include "../emailMessage.h"
iva2k 0:e614f7875b60 32
iva2k 0:e614f7875b60 33 #include "mbed.h"
iva2k 0:e614f7875b60 34
iva2k 0:e614f7875b60 35 #define SMTP_REQUEST_TIMEOUT 5000
iva2k 0:e614f7875b60 36
iva2k 0:e614f7875b60 37 enum SMTPResult
iva2k 0:e614f7875b60 38 {
iva2k 0:e614f7875b60 39 SMTP_OK,
iva2k 0:e614f7875b60 40 SMTP_PRTCL, //Protocol error
iva2k 0:e614f7875b60 41 SMTP_TIMEOUT, //Connection timeout
iva2k 0:e614f7875b60 42 SMTP_DISC //Disconnected
iva2k 0:e614f7875b60 43 };
iva2k 0:e614f7875b60 44
iva2k 0:e614f7875b60 45 class SMTPClient /*: public NetService*/
iva2k 0:e614f7875b60 46 {
iva2k 0:e614f7875b60 47 public:
iva2k 0:e614f7875b60 48 SMTPClient();
iva2k 0:e614f7875b60 49 virtual ~SMTPClient();
iva2k 0:e614f7875b60 50
iva2k 0:e614f7875b60 51 void setHost(const Host& host);
iva2k 0:e614f7875b60 52 void send(EmailMessage* pMessage);
iva2k 0:e614f7875b60 53
iva2k 0:e614f7875b60 54 class CDummy;
iva2k 0:e614f7875b60 55 template<class T>
iva2k 0:e614f7875b60 56 //Linker bug : Must be defined here :(
iva2k 0:e614f7875b60 57 void setOnResult( T* pItem, void (T::*pMethod)(SMTPResult) )
iva2k 0:e614f7875b60 58 {
iva2k 0:e614f7875b60 59 m_pCbItem = (CDummy*) pItem;
iva2k 0:e614f7875b60 60 m_pCbMeth = (void (CDummy::*)(SMTPResult)) pMethod;
iva2k 0:e614f7875b60 61 }
iva2k 0:e614f7875b60 62
iva2k 0:e614f7875b60 63 void init(); //Create and setup socket if needed
iva2k 0:e614f7875b60 64 void close();
iva2k 0:e614f7875b60 65
iva2k 0:e614f7875b60 66 private:
iva2k 0:e614f7875b60 67 int rc(char* buf); //Return code
iva2k 0:e614f7875b60 68 void process(bool moreData); //Main state-machine
iva2k 0:e614f7875b60 69
iva2k 0:e614f7875b60 70 void setTimeout(int ms);
iva2k 0:e614f7875b60 71 void resetTimeout();
iva2k 0:e614f7875b60 72
iva2k 0:e614f7875b60 73 void onTimeout(); //Connection has timed out
iva2k 0:e614f7875b60 74 void onTCPSocketEvent(TCPSocketEvent e);
iva2k 0:e614f7875b60 75 void onResult(SMTPResult r); //Called when exchange completed or on failure
iva2k 0:e614f7875b60 76
iva2k 0:e614f7875b60 77 EmailMessage* m_pMessage;
iva2k 0:e614f7875b60 78
iva2k 0:e614f7875b60 79 TCPSocket* m_pTCPSocket;
iva2k 0:e614f7875b60 80
iva2k 0:e614f7875b60 81 enum SMTPStep
iva2k 0:e614f7875b60 82 {
iva2k 0:e614f7875b60 83 SMTP_HELLO,
iva2k 0:e614f7875b60 84 SMTP_FROM,
iva2k 0:e614f7875b60 85 SMTP_TO,
iva2k 0:e614f7875b60 86 SMTP_DATA,
iva2k 0:e614f7875b60 87 SMTP_BODY,
iva2k 0:e614f7875b60 88 SMTP_BODYMORE,
iva2k 0:e614f7875b60 89 SMTP_EOF,
iva2k 0:e614f7875b60 90 SMTP_BYE
iva2k 0:e614f7875b60 91 };
iva2k 0:e614f7875b60 92
iva2k 0:e614f7875b60 93 SMTPStep m_nextState;
iva2k 0:e614f7875b60 94
iva2k 0:e614f7875b60 95 CDummy* m_pCbItem;
iva2k 0:e614f7875b60 96 void (CDummy::*m_pCbMeth)(SMTPResult);
iva2k 0:e614f7875b60 97
iva2k 0:e614f7875b60 98 Timeout m_watchdog;
iva2k 0:e614f7875b60 99 int m_timeout;
iva2k 0:e614f7875b60 100
iva2k 0:e614f7875b60 101 int m_posInMsg;
iva2k 0:e614f7875b60 102
iva2k 0:e614f7875b60 103 bool m_closed;
iva2k 0:e614f7875b60 104
iva2k 0:e614f7875b60 105 Host m_host;
iva2k 0:e614f7875b60 106
iva2k 0:e614f7875b60 107 };
iva2k 0:e614f7875b60 108
iva2k 0:e614f7875b60 109 #endif