Hello I have a question about this structure. It has 2 fields. One is iov_base the pointer of type void. Second is iov_len of type size_t. This is interesting: iov_len has always a value of 8190. How does it impact the iov_base? I mean does iov_base is built from other structures? If soo where I can find them? I can't find the definition of this structure in the kernel sources... The man page for recv variations have it. Thx for all the help Grzegorz.