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What are TCP connections used for?
TCP stands for Transmission Control Protocol a communications standard that enables application programs and computing devices to exchange messages over a network. It is designed to send packets across the internet and ensure the successful delivery of data and messages over networks.
What is valid TCP connection state?
The states are: LISTEN, SYN-SENT, SYN- RECEIVED, ESTABLISHED, FIN-WAIT-1, FIN-WAIT-2, CLOSE-WAIT, CLOSING, LAST-ACK, TIME-WAIT, and the fictional state CLOSED. CLOSED is fictional because it represents the state when there is no TCB, and therefore, no connection.
Is open a valid TCP connection?
Before a TCP connection can be opened, you need to have a server with a listener. The server will then send a SYN-ACK in reply to the client which changes its connection state to SYN-RECEIVED. If everything worked properly, the client will reply with an ACK and the connection is marked as ESTABLISHED on both end-point.
How long does it take to establish a TCP connection?
This usually takes at most a second or two, but it can add up quickly when hundreds of HTTP transactions are made. Once the connection is established, the client sends the HTTP request over the newly established TCP pipe.
What do you need to know about a TCP connection?
To establish a TCP connection, you must know the address of the network device hosting the service you need and you must know the TCP port that the service uses to communicate. The Internet Assigned Numbers Authority (Iana) defines port numbers for common services (see Service Name and Transport Protocol Port Number Registry ).
What does the acceptocket method do in TCP?
The Start method enables listening, and the Stop method disables listening on the port. The AcceptTcpClient method accepts incoming connection requests and creates a TcpClient to handle the request, and the AcceptSocket method accepts incoming connection requests and creates a Socket to handle the request.
How to create a socket on a TCP server?
The AcceptTcpClient method accepts incoming connection requests and creates a TcpClient to handle the request, and the AcceptSocket method accepts incoming connection requests and creates a Socket to handle the request. The following example demonstrates creating a network time server using a TcpListener to monitor TCP port 13.
What are the port numbers for TCP services?
Services not on the Iana list can have port numbers in the range 1,024 to 65,535. The following example demonstrates setting up a TcpClient to connect to a time server on TCP port 13: