How to receive more then 5000 bytes in winsock C++?

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1.00/5 (2 votes)

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C++

network

sockets

I create a client server app,But the client did not receive more 5000 bytes.
Please help me.

Posted 18-Jul-13 8:39am

Alamgirable

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pasztorpisti 18-Jul-13 17:23pm

In theory in worst case you will receive the 5000 bytes one-by-one with 5000 separate reads. You have to allocate a buffer to receive the data and you have to call recv() in a loop and always append the received small chunk of bytes to the end of your buffer. When the buffer size reaches 5000 you have your data there. If you are luck you can read out 5000 bytes with one recv() call from the recv buffer of the socket object, if you have a bad day you will have to make 5000 recv() calls each of them reading only 1 byte (this is just theory and one of my network stress test cases).

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JackDingler · Answer 1 · 2013-07-18T08:53:00

Solution 1

There's no guarantee that you'll get all of your data in one packet.

With large packets, the sending application will often break it into chunks, that you'll need to reassemble.

Posted 18-Jul-13 8:53am

JackDingler

Updated 18-Jul-13 8:56am

v2

Comments

Alamgirable 18-Jul-13 14:58pm

Please give the code example...

JackDingler 18-Jul-13 15:44pm

Have you tried Google? There are many excellent examples on the web. Far better than anything I have time to write for you.

You're stuck on a very basic problem. You have quite a bit research and education ahead of you.
If you're in school and this is a homework assignment, go back over the material your instructor has provided. Ask questions of your instructor and teacher's aides.