Ilya I / Mbed 2 deprecated iva2k_NetHttpServerTcpSockets

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

HttpServerTcpSockets.cpp

Committer:
iva2k
Date:
2010-06-14
Revision:
1:3ee499525aa5
Parent:
0:e614f7875b60

File content as of revision 1:3ee499525aa5:

#define MY_DEBUG_LEVEL 2
#define MBED_BOB2 1
#define USE_SD 0

#include "mbed.h"
#include "EthernetNetIf.h"
#include "HTTPServer.h"
#include "StreamServer.h"

#if USE_SD
#include "SDFileSystem.h"
#endif

DigitalOut led1(LED1, "led1");
DigitalOut led2(LED2, "led2");
DigitalOut led3(LED3, "led3");
DigitalOut led4(LED4, "led4");

//LocalFileSystem fs("webfs");
LocalFileSystem local("webfs");
#if USE_SD
SDFileSystem sd(p5, p6, p7, p8, "sd");        // MBED-BoB2
#endif

EthernetNetIf eth;
//#if 0 // Fixed address
//EthernetNetIf eth(
//  IpAddr(192,168,0,101), //IP Address
//  IpAddr(255,255,255,0), //Network Mask
//  IpAddr(192,168,0,1), //Gateway
//  IpAddr(192,168,0,1)  //DNS
//);
//#endif 
HTTPServer svr;
StreamServer stream;
Serial pc(USBTX, USBRX);

int gDebug=MY_DEBUG_LEVEL;
float gWait = 0.005;        // Main loop wait timeout

int main() {
  bool use_sd = false;
  unsigned int cnt = 0;

pc.baud(115200);
  Base::add_rpc_class<DigitalOut>();

  printf("\r\nSetting up...\r\n");
  EthernetErr ethErr = eth.setup();
  if(ethErr)
  {
    printf("Error %d in setup.\n", ethErr);
    return -1;
  }
  printf("\r\nSetup OK\r\n");
  
#if USE_SD
  // Check if we can use SD card for the web server
  FILE *fp = fopen("/sd/index.htm", "r");
  if (fp == NULL) {
    if (gDebug) printf("DEBUG: No SD card found or no index.htm file - using LocalFilesystem for WebServer.\r\n");
  } else {
    use_sd = true;
    fclose(fp);
    if (gDebug) printf("DEBUG: Found SD card with index.htm file - using SD for WebServer.\r\n");
  }
#endif

  svr.addHandler<SimpleHandler>("/hello");
  svr.addHandler<RPCHandler>("/rpc");
  svr.addHandler<FSHandler>(""); //Default handler
  //FIXME: can't use this:    , use_sd ? "/sd/" : "/local/");
  //Example : Access to mbed.htm : http://a.b.c.d/webfs/mbed.htm
  
  svr.bind(80);
  
  printf("\r\nHTTP Listening...\r\n");

//#### STREAM SOCKETS
stream.bind(123);
    
  Timer tm;
  tm.start();
  //Listen indefinitely
  while(true)
  {
    Net::poll();
    if(tm.read()>.5)
    {
      led1=!led1; //Show that we are alive
      if ((cnt % 4) == 0) {
        char buf[100];
        int len = sprintf(buf, ".tick.%d======================================================================\r\n", cnt);
        stream.sendToAll(buf, len);
        printf("%s - %d clients\r\n", buf, stream.countClients());
//        printf(".tick.%d - %d clients\r\n", cnt, stream.countClients());
      }
      tm.start();
      cnt++;
    }
//    wait(gWait);
  }

  return 0;

}