Question

internet based programming

Asked by: tameem_md

i m writing a chat software in vc++ which is based on peer to peer setup with no server inbetween. i m encountering  a problem when i try to send video image packet from public ip peer to another public ip peer or dialup peer . that is the packet gets either killed or collapsed resulting in no image relayed to the other peer. when i try to send the same image from  a public ip sysytem to another oublic system in the same network threaded by the LAN the packet is able to reach resulting in image displeyed .
pls can somebody give some program or atleast tell me what should be done. an instant and a immediate will be reciprocated with regards and thanks.

tameem

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Asked On
2003-09-25 at 02:01:53ID20748425
Topics

Miscellaneous Programming

,

Video Editing

Participating Experts
3
Points
250
Comments
13

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Answers

 

by: bhagyeshtPosted on 2003-09-25 at 02:10:02ID: 9426974

are u using TCP/IP and the size of the packet is more than 8k?

 

by: OnixExpPosted on 2003-09-25 at 07:57:14ID: 9428916

This question should probably be joined with the "internet based" ?

 

by: tameem_mdPosted on 2003-09-26 at 05:41:19ID: 9435879

hi
i m writing a chat software in vc++ which is based on peer to peer setup with no server inbetween. i m encountering  a problem when i try to send video image packet from public ip peer to another public ip peer or dialup peer . that is the packet gets either killed or collapsed resulting in no image relayed to the other peer. when i try to send the same image from  a public ip sysytem to another oublic system in the same network threaded by the LAN the packet is able to reach resulting in image displeyed .
pls can somebody give some program or atleast tell me what should be done. an instant and a immediate will be reciprocated with regards and thanks.

tameem

additional query :
i have to build any protocol for sending  video image apart from the udp protocol and the what could the max size of the udp packet
tameem

 

by: bhagyeshtPosted on 2003-09-26 at 05:45:40ID: 9435912

i guesss over 8k may cause a problem

 

by: adgPosted on 2003-09-27 at 11:22:56ID: 9443118

Try keeping the size of your packets at or below 536 bytes. If you send a UDP packet that is too large for any of the routers between you and the peer, it will become fragmented. Even if all of the routers reassemble packets properly, if any of the fragments are dropped, the whole datagram will be dropped. You don't always receive any notification that this has occurred, thats why UDP is "unreliable".

Routers routinely drop packets when their queues overflow.

When sending within a LAN, it is unlikely for any packets to be dropped. Out across the hostile internet, things are not so simple.

 

by: bhagyeshtPosted on 2003-09-28 at 21:43:54ID: 9449053

best would be to use TCP its reliable besides u can be sure that packet 1 arrives has reached before u send packet 2

 

by: tameem_mdPosted on 2003-09-28 at 21:51:05ID: 9449086

hi
is there special properties or any special care to be taken when we sent video packets to a dailup connection and any other different thing to be adopted for DSL connetion.
tameem

 

by: bhagyeshtPosted on 2003-09-28 at 21:57:30ID: 9449112

well in a DSL depending on your provider you may not have a unique ip. in this case u wont get the packets in the first case

 

by: bhagyeshtPosted on 2003-09-28 at 21:58:29ID: 9449117

first verify if you have a unique ip if you dont then u have to use a client server arch. instead of a peer to peer.

 

by: bhagyeshtPosted on 2004-02-09 at 23:30:18ID: 10319991

accept answer by bhagyesht
Bhagyesh Trivedi

20120131-EE-VQP-002

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