Problems using ethernet

[antoniojteixeira]

I have a project that reads the network configuration from a sdcard. Then each time I push a button a request to a webserver is made.
The problem is I cant use vars instead of hardcoding values to make the calls.
This works perfectly:

client.println("GET /ticket_call?station=1&return_format=text&get_number_only=1&queue=A HTTP/1.0");
client.println("Connection: close");
client.println("");

When I try to use vars to substitute the A in the queue and the 1 on the station the call dont work.

For the queue I tried to use the following code:

String Queue;
Queue="A";
String request = "GET /ticket_call?station=1&return_format=text&get_number_only=1&queue=";
request += Queue;
request += " HTTP/1.0";
client.println(request);
client.println("Connection: close");
client.println("");

What is wrong? Any help please?
Thank you in advance.

Antonio Teixeira

[StefanL38]

String Queue;
Queue="A";
String request = "GET /ticket_call?station=1&return_format=text&get_number_only=1&queue=";
request += Queue;

Serial.print("1#");
Serial.print(request);
Serial.println("#");
Serial.println();

request += " HTTP/1.0";

Serial.print("2#");
Serial.print(request);
Serial.println("#");

client.println(request);
client.println("Connection: close");
client.println("")

Make visible what you are really adding to the String

[antoniojteixeira]

Thank you Stefan,
For some reason I didnt understand all started to work. The concatenated strings are now working fine. Thank you anyway for you answer.