Is there any simple functions to check how much data is buffered but unread? FD_ISSET only indicates the presence of data in the buffer. Is possible not to create a second buffer in the program for greater control of buffer?
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Is there any simple functions to check how much data is buffered but unread? FD_ISSET only indicates the presence of data in the buffer. Is possible not to create a second buffer in the program for greater control of buffer?
You could use
recv()with theMSG_PEEKandMSG_DONTWAITflags, but there’s no firm guarantee that there aren’t more bytes available thanrecv()returned in that case.Using a buffer within your program is the normal and accepted way to solve the problem.