File content as of revision 2:96321cb48732:

#include "mbed.h"
#include "EthernetInterface.h"
#include "HTTPServer.h"
#include "mbed_rpc.h"
#include "DHT.h"
 
RpcDigitalOut led1(D9,"led1");
RpcDigitalOut led2(D10,"led2");
RpcDigitalOut led3(D11,"led3");

//RPCVarialbe<float> RPCTemperature(&GetTemperature, "Temperature");
//RPCVarialbe<float> RPCHumidity(&GetHumidity, "Humidity");
void Get_Temp_and_Humidity(Arguments * input, Reply * output);

RPCFunction Temp_and_Humidity_Finder(&Get_Temp_and_Humidity, "Temp_and_Humidity_Finder");

EthernetInterface eth;  
HTTPServer svr;

DHT sensor(D4, DHT11);

void Get_Temp_and_Humidity(Arguments * input, Reply *output){
    int error = 0;
    float h = 0.0f, c = 0.0f;
    char arg[100];

    error = sensor.readData();
    if (0 == error) {
        c   = sensor.ReadTemperature(CELCIUS);
        h   = sensor.ReadHumidity();
        sprintf(arg,"Temperature in Celcius: %4.2f, Humidity is %4.2f",c, h);
    
        output->putData(arg);
    }
}

int main() {
  //Turn the LEDs off
  uint8_t mac_addr[6] = {0x00, 0x08, 0xDC, 0x32, 0x23, 0x42}; 
  led1.write(0);
  led2.write(0);
  led3.write(0);
  
  RPC::add_rpc_class<RpcDigitalOut>();

  printf("Setting up...\n");
  eth.init(mac_addr);
  int ethErr = eth.connect();
  if(ethErr < 0)
  {
    printf("Error %d in setup.\n", ethErr);
    return -1;
  }
  svr.addHandler<HTTPRpcRequestHandler>("/rpc");
  
  //attach server to port 80
  printf("Listening...\n");
  svr.start(80, &eth);
    
  Timer tm;
  tm.start();
  //Listen indefinitely
  while(true)
  {
    svr.poll();
    if(tm.read()>.5)
    {
      tm.start();
    }
  }
}