🚀 go-pugleaf

>We are developing a distributed little system whichs communication 
>is based on the  berkeley socket abstraction.
>Now we are faced to the following problem:
>
>To poll from a given socket, that means to test if there is some 
>data arrived without reading it yet, we use the UNIX system call 
>ioctl to set the access mode to the socket and the function recv 
>to poll it. 
 ...
>Our problem is: HOW TO SET THE SOCKET TO
>BLOCKING AND NONBLOCKING ?

Have you tried the system call select()?  This function allows you
to determine if there is any I/O pending for a set of file descriptors.
The last argument in select() is a pointer to a timeout value.  If the
timeout pointer is NULL, the call to select() blocks and a non-NULL
timeout pointer allows you to poll.

--

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| Steven F. LeBrun             |      MIT Lincoln Laboratory, Group 91     |
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| lebrun@ll.mit.edu (Internet) |          Lexington, MA 02173-9108         |
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|             "I am not a number, I am a free man!" -- No. 6               |
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