Metrologic Optimus R, Руководство по программированию

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Chapter 3 Terminal Specific Function Library 153
inet_ntoa
Purpose To convert an IP address to a string in standard dot notation.
Syntax char *inet_ntoa (struct in_addr addr);
addr A in_addr structure containing the IP address to be converted
Example struct sockaddr_in name;
char ip_addr[16];
strcpy (ip_addr, inet_ntoa (name.sin_addr));
printf ("Remote IP: %s", ip_addr);
Description This routine converts an IP address stored in a struct in_addr structure to a
string in standard dot notation.
Return If successful, it returns a pointer to the string.
Otherwise (?)
See Also inet_addr
ioctlsocket
Purpose To provide controls on the I/O mode of a socket.
Syntax int ioctlsocket (int fildes, int request, ...);
Example (?)
Description This routine manipulates the underlying device parameters of special files. In
particular, many operating characteristics of character special files (e.g.
terminals) may be controlled with ioctlsocket() requests.
The argument fildes must be an open file descriptor.
Return If successful, it returns 0.
On error, it returns -1.
The global variable
errno
is set to indicate the error condition encountered.
See Also
fcntlsocket
listen
Purpose To listen for connections on a socket.
Syntax int listen (SOCKET s, int backlog);
s Descriptor identifying a bound, unconnected socket
backlog Number of connections that will be held in a queue waiting to
be accepted