How a server socket is defined in TCP?

Definition: A socket is one endpoint of a two-way communication link between two programs running on the network. A socket is bound to a port number so that the TCP layer can identify the application that data is destined to be sent to. An endpoint is a combination of an IP address and a port number.

How is a TCP socket identified?

In the TCP protocol, the socket is uniquely identified by the source IP, source port, destination IP, and destination port. … It can’t rely solely on the source IP information, because a single host can establish multiple sessions, but each session has to be on a different port.

What are server ports?

A port number is a way to identify a specific process to which an Internet or other network message is to be forwarded when it arrives at a server. For the Transmission Control Protocol and the User Datagram Protocol, a port number is a 16-bit integer that is put in the header appended to a message unit.

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What is server socket explain in detail with an example?

Sockets are bound to the port numbers and when we run any server it just listens on the socket and waits for client requests. For example, tomcat server running on port 8080 waits for client requests and once it gets any client request, it responds to them. 1 Java Socket Programming.

Which socket is used for client and server in TCP?

A Unix Socket is used in a client-server application framework. A server is a process that performs some functions on request from a client. Most of the application-level protocols like FTP, SMTP, and POP3 make use of sockets to establish connection between client and server and then for exchanging data.

Is socket TCP or UDP?

1.25:49175. Because web servers operate on TCP port 80, both of these sockets are TCP sockets, whereas if you were connecting to a server operating on a UDP port, both the server and client sockets would be UDP sockets.

What is difference between TCP and UDP socket?


TCP is a connection-oriented protocol, whereas UDP is a connectionless protocol. The speed for TCP is slower while the speed of UDP is faster. TCP uses handshake protocol like SYN, SYN-ACK, ACK while UDP uses no handshake protocols.

How do I find my server port?

How to find your port number on Windows

  1. Type “Cmd” in the search box.
  2. Open Command Prompt.
  3. Enter the “netstat -a” command to see your port numbers.

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What is the use of port 8080?

The most commonly used example is assigning port 8080 for a web server. To get traffic to this web server, you would need to append the port number to the end of the domain name like Note that using port 8080 is not reserved for secondary web servers.

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How many ports can a server have?

TCP/IP Ports

There are a number of common networking ports that are used frequently. Ports 0 through 1023 are defined as well-known ports. Registered ports are from 1024 to 49151. The remainder of the ports from 49152 to 65535 can be used dynamically by applications.

Which method opens the server socket?

The accept() method of ServerSocket class blocks the console until the client is connected. After the successful connection of client, it returns the instance of Socket at server-side.

Important methods.

Method Description
1) public Socket accept() returns the socket and establish a connection between server and client.

What is a server socket?

Definition: A socket is one endpoint of a two-way communication link between two programs running on the network. A socket is bound to a port number so that the TCP layer can identify the application that data is destined to be sent to.

What is the use of socket programming?

Socket programs are used to communicate between various processes usually running on different systems. It is mostly used to create a client-server environment. This post provides the various functions used to create the server and client program and an example program.

Can two sockets bind same port?

Yes. Multiple listening TCP sockets, all bound to the same port, can co-exist, provided they are all bound to different local IP addresses. … Multiple UDP sockets all bound to the same port can all co-exist provided either the same condition as at (1) or they have all had the SO_REUSEADDR option set before binding.

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What port number is 8080?

Service Name and Transport Protocol Port Number Registry

Service Name Port Number Description
http-alt 8080 HTTP Alternate (see port 80)
http-alt 8080 HTTP Alternate (see port 80)

Is socket and port the same?

Both Socket and Port are the terms used in Transport Layer. A port is a logical construct assigned to network processes so that they can be identified within the system. A socket is a combination of port and IP address. … The same port number can be used in different computer running on same software.