Lesson: All About Datagrams Some applications that you write to communicate over the network will not require the reliable, point-to-point channel provided by TCP. Rather, your applications might benefit from a mode of communication that delivers independent packages of information whose arrival and order of arrival are not guaranteed.

The UDP protocol provides a mode of network communication whereby applications send packets of data, called datagrams, to one another. A datagram is an independent, self-contained message sent over the network whose arrival, arrival time, and content are not guaranteed. The DatagramPacket and DatagramSocket classes in the java.net package implement system-independent datagram communication using UDP.

definitionWhat Is a Datagram?

A datagram is an independent, self-contained message sent over the network whose arrival, arrival time, and content are not guaranteed.

clientServerWriting a Datagram Client and Server

This section walks you through an example that contains two Java programs that use datagrams to communicate. The server side is a quote server that listens to its DatagramSocket and sends a quotation to a client whenever the client requests it. The client side is a simple program that simply makes a request of the server.

broadcastingBroadcasting to Multiple Recipients

This section modifies the quote server so that instead of sending a quotation to a single client upon request, the quote server broadcasts a quote every minute to as many clients as are listening. The client program must be modified accordingly.
Note:  Many firewalls and routers are configured not to allow UDP packets. If you have trouble connecting to a service outside your firewall, or if clients have trouble connecting to your service, ask your system administrator if UDP is permitted.

Bhopal news
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

freelance web designer india ecommerce web developer | Ecommerce web design, software developer india | Web hosting India Windows hosting | India web hosting Windows hosting India | India software developer | web designer india