int TimeOut, valsize;
setsockopt(skt,SOL_SOCKET,SO_RCVTIMEO,(const char *)&TimeOut,valsize);

firstly i make the call with TimeOut = 1000 and valsize = sizeof(TimeOut), then i make it with TimeOut = 0 and valsize=0

the first call ends up sucessfully but the second one doesnt

it gives an erorr of WSAEFAULT
(the description of error from MSDN
optval is not in a valid part of the process address space or optlen parameter is too small

optval=TimeOut, optlen = valsize

anyone who can help??

: int TimeOut, valsize;
: setsockopt(skt,SOL_SOCKET,SO_RCVTIMEO,(const char *)&TimeOut,valsize);
:
: firstly i make the call with TimeOut = 1000 and valsize = sizeof(TimeOut), then i make it with TimeOut = 0 and valsize=0
:
: the first call ends up sucessfully but the second one doesnt
:
: it gives an erorr of WSAEFAULT
: (the description of error from MSDN
: optval is not in a valid part of the process address space or optlen parameter is too small
:
: optval=TimeOut, optlen = valsize
:
: anyone who can help??
:

First casting the address of an integer to a const char * does not seem like a good idea. Next, TimeOut is the same size no matter what it's value is, so you probably still need valsize=sizeof(TimeOut). If you mean to have TimeOut a NULL pointer then simply put NULL there, if you won't know this until runtime, then use a pointer variable.

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