Could not send an URL with httppara

Projects Programming
1

Dear All,

I experiencing an issue since a couple of day!!!

I am trying so send a URL with a SIM900 with the command HTTPPARA.

I am not sure but I suggest a problem of Arduino Mini Pro buffer with a limitation of 64byte.

Here is the final URL to be send

AT+HTTPPARA="URL","http://xxxxx.dyndns.org:8080/gprmc/Data?acct=sysadmin&dev=bipme&cid=11621&mnc=03&mcc=2&a=01grc$PM,,,,,,"

Here is my code

/* Sets url */
snprintf(str_aux1, sizeof(str_aux1), "%s=\"URL\",\"http://%s:%s/%s%s", str_aux1,_http_srv,_http_port,_http_path,_http_script);

	// SEND COMMAND
	// http://xxxxx.dyndns.org:8080/gprmc/Data?
	_cell.print(str_aux1);

    _cell.print(F("acct="));
    _cell.print(_acct);

    _cell.print(F("&"));
    _cell.print(F("dev="));
    _cell.print(_dev); // See page 36 of OpenGTS Manuel

	_cell.print(F("&"));

    // SEND FIX
    // data = cid=11621&mnc=03&mcc=2&a=01grc$PM,,,,,,
    for(byte i=0; i < strlen(data); i++)
    {
		_cell.print(data[i]);
	}
    // Add the " to close the command
    _cell.println("\"\r");
    
    // READ THE RESPONSE
	int x = 0;
  	int answer = 0;
  	unsigned long previous;

  	// Clean the buffer
  	memset(buffer, '\0', BUFFERSIZE);     // BUFFERSIZE is 200
  	
  Serial.println(F(""));
	
	// Clean _cell
    while(_cell.available() > 0) _cell.read();    

    previous = millis();

    // Start do loop until the while condition is met (timeout and expected answers)
    do{
      // If _cell is available
      if(_cell.available() > 0)
      {
        if(x < BUFFERSIZE-1) 
        {
          	char r = _cell.read(); 
          	buffer[x] = r;
			
		// To print the response
          	Serial.print(buffer[x]);
          	x++;

			// IF OK IS RED, CHANGE ANSWER TO 1 TO LEAVE THE LOOP
            if (strstr(buffer, "OK") != NULL)    
            { 
                answer = 1;
                buffer[x]='\0'; 
            }

        } // end x<BUFFERSITE
        else
        {
          #ifdef DEBUG
            sprintln(F("*Overflow*"));
          #endif
        }
      }
      else{
        //Serial.println(F("N/A"));
        //Serial.println(x);
      }// End cell available

    } // end do
    while((answer == 0) && ((millis() - previous) < 10000)); 
	// Leave to loop if answer is true and if previous exceed 10 sec


    if (answer == 1)
    {
        // Print while success
        #ifdef DEBUG_SEND
        	//sprintln(OK_RESPONSE);
            sprintln(F("OK"));
            sprint(F("URL:\t\t\t"));
            sprintln(buffer);
        #endif
        
        /*
        	Here is the rest of the code which works
        	//HTTPACTION:0
        	//HTTPREAD:1,200
        */
        
        
    }
    else // END HTTPPARA URL 
    {
		#ifdef DEBUG_SEND
        	sprintln(buffer);
            sprintln(F("Err setting url"));
        #endif
        answer = -101;
    }

What happen?
Here is the the print of

// To print the response
Serial.print(buffer[x] ) ;

Response:

AT+HTTPPARA="URL","http://xxxxx.dyndns.org:8080/gprmc/Data?acct=sysadmin&dev=bipme&cid=11621&mnc=03&mcc=2&a=01grc$PM,,,,,,

(The correct response should have an 'OK' below below the last coma)

You can observe, there is not the " which close the command.

Some time, I have this with a 0 or a K

AT+HTTPPARA="URL","http://xxxxx.dyndns.org:8080/gprmc/Data?acct=sysadmin&dev=bipme&cid=11621&mnc=03&mcc=2&a=01grc$PM,,,,,,"K

When I have the error message

Err setting url

it's because the URL was not correct and it append if I forget the "

I really why it's does not work.
Do you have an idea?
It a relation with
This hardware allows the Atmega chip to receive serial communication even while working on other tasks, as long as there room in the 64 byte serial buffer.

Thank for your help