WDD_lec_21 - Design Development Web Lec 21 Umair Javed 1...

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1 Web Lec - 21 Umair Javed
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2 Web Socket Programming
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JDBC 3 Umair Javed©2005 Request – Response Model animation
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JDBC 4 Umair Javed©2005 Socket A socket is one endpoint of a two-way communication link between two programs running on the network. A socket is a bi-directional communication channel between hosts (a computer on a network can be termed as a host). A socket is bound to a port number
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JDBC 5 Umair Javed©2005 Socket’s Dynamics A Socket is an abstraction of the network similar to the way a file is an abstraction of your hard drive. You store and retrieve data through files from hard drive without knowing the actual dynamics of the hard drive. Similarly you send and receive data to and from network through socket without actually going into underlying mechanics.
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6 Umair Javed©2005 Sending/Receving Messages using Socket You read from or write data to a file, using streams. Similarly to read from or write data to a socket,
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WDD_lec_21 - Design Development Web Lec 21 Umair Javed 1...

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