Packet lose during communication?

[alialfy]

Hi everybody,

I´m new in Linux,
I have written two client and server perl script programs, because these two PCs should communicate contineously with each other. but some packet are lost during communication.

I want to analyze the way, also the stations and modules, which the packets cross them. but I don't know how can I begin to analyze and how is the Linux kernel construction.

How can Linux detect a packet at network device? what does it do with this packet?
Is there any document in this area? I have read many docs but I didn't find anything useful.

thanks

[RobinVossen]

Have you tryed the Sniffers like Wireshark and TCPDump???

[alialfy]

Hi,

yes, I have checked the receptions of packets with wireshark, but sometimes the packets are lost and sometimes not, therefore, I want to learn the linux construction. why the whireshark captures all packets and perl program doesn't.

[RobinVossen]

Well if you'd look into the kernel source. ( You can Obtain it for Free at The Linux Kernel Archives )
There is a file called Networking.c if I am not mistaken. Maybe yu could get some information in that?
Also, have you thought about the problem that your program might not be Full Duplex? You'd need to Multi-Thread to make the program able to Accept a Stream at the same time as sending one.. Miliseconds can make diffrences.

I hope ( and doubt ) this helped you.

Cheers,
Robin