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What are Datagrams and Sockets?
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A socket represents a connection point into a TCP/IP network
between two computers; one of which is the server and the other
is the client. Sockets are used to access the Web server. These
sockets are available in the Java Socket class. Sockets act as
virtual passageways for communication through which the data
travels from one host to another. Sockets are of two types,
connection-oriented or connectionless. The connection-oriented
socket operates similarly to a telephone where the connection is
established prior to the transmission of data. The second type
of socket is the connectionless socket. This type of socket is
called a Datagram. This socket operates similarly to the mail. A
characteristic of the Datagram is that it allows only one
message to be sent at a time. The delivery of data is not
guaranteed because Datagrams use the UDP protocol.
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