Error while running webapplication with google appengine

Question

I created a small web application.if i deployed its work but if try to run application it show the port 8888 appears to be in use(perhaps by another lanch),do you still to contine with this lanch? i clicked yes but show the error Could not open the requested socket: Address already in use: bind Try overriding --address and/or --port.

Answer 1

The problem is what it is stating.

You are facing this issue because of the following:

• Either the port 8888 is in use by some other application and not previous launch. This is less likely.
• This condition is more likely and it is because you have already launched the application once i.e. via the Run as Web Application. And it is still running. In your Eclipse, visit the Window-> Show View -> Console. And in the Console window, you will find one or more previous instances running. Please stop that.

Answer 2

There are some instances where the solution suggested by Romin will not work because the option to stop the process does not present itself in the console.

In these cases, you can probably find out which process ID is using the port and then kill that process.

For example, on a mac, this worked for me:

 😈   >lsof -i tcp:8888
COMMAND   PID     USER   FD   TYPE             DEVICE SIZE/OFF NODE NAME
java    25866 alexryan   60u  IPv6 0x96e9c26778f105e1      0t0  TCP localhost:ddi-tcp-1 (LISTEN)
 😈   >kill 25866
 😈   >lsof -i tcp:8888
 😈   >