How do I close ServerSocket in Java?

Java ServerSocket close() method. The close() method of ServerSocket class is used to close this socket. Any thread currently blocked in accept() will throw a SocketException. The associated channel is also closed by it if it has any.

How do I stop a socket from accepting?

Another thing you can try which is cleaner, is to check a flag in the accept loop, and then when your admin thread wants to kill the thread blocking on the accept, set the flag (make it thread safe) and then make a client socket connection to the listening socket.

What is the accept method in ServerSocket class?

The accept() method of ServerSocket class is used to accept the incoming request to the socket. To complete the request, the security manager checks the host address, port number, and localport.

What does the ServerSocket method accept () return?

Apparently, it returns a Socket object.

What happens if socket is not closed?

1 Answer. One way or another, if you don’t close a socket, your program will leak a file descriptor. Programs can usually only open a limited number of file descriptors, so if this happens a lot, it may turn into a problem.

Do you need to close server socket?

Yes. While destroying references to the socket may cause the garbage collector to finalize it, that does not specify that it will be closed. This is implementation-specific in many cases, and can sometimes derail relative to design due to performance or even minute bugs that are hard to track.

What is the difference between ServerSocket and socket?

The Key Difference between Socket and ServerSocket Class is that Socket is used at the client side whereas ServerSocket is used at the server side.

Is accept () blocking?

Accept is not blocking. Socket libraries support BLOCKING and NON_BLOCKING… If the library you are using blocks while accept is called, look at setting the socket handle timeout in 10 to 30ms, then call accept and it will come back much sooner.

What is use of ServerSocket in Java?

ServerSocket is a java.net class that provides a system-independent implementation of the server side of a client/server socket connection. The constructor for ServerSocket throws an exception if it can’t listen on the specified port (for example, the port is already being used).

What accept method in ServerSocket class do Mcq?

Explanation: The Public socket accept () method is used by the ServerSocket class to accept the connection request of exactly one client at a time. The client requests by initializing the socket object with the servers IP address. That is how the client requests a connection to the server.

What is ServerSocket in Java?

ServerSocket is a java.net class that provides a system-independent implementation of the server side of a client/server socket connection. The accept method waits until a client starts up and requests a connection on the host and port of this server.

What happens when the client try to use the closed socket?

The client program closes the socket using shutdown() or close() . When this happens, TCP will send a FIN packet to your server. This will show up as a closed socket in your server when you try to read beyond the last byte of data sent by the client. The next read() will probably throw an exception or error condition.

How to close a serversocket in Java?

The close() method of ServerSocket class is used to close this socket. Any thread currently blocked in accept() will throw a SocketException. The associated channel is also closed by it if it has any.

What is the use of accept in Java serversocket?

Java ServerSocket accept() method. The accept() method of ServerSocket class is used to accept the incoming request to the socket. To complete the request, the security manager checks the host address, port number, and localport. Syntax

What are the methods of socket accept and close?

Methods Modifier and Type Method and Description Socket accept () Listens for a connection to be void bind ( SocketAddress endpoint) Binds the void bind ( SocketAddress endpoint, int back void close () Closes this socket.

Why does serversocket close throw an exception?

The reason ServerSocket.close()throws an exceptionis because you have an outputstreamor an inputstreamattached to that socket. You can avoid this exception safely by first closing the input and output streams. Then try closing the ServerSocket.