sethostent()
Open the host database file
Synopsis:
#include <netdb.h>
void sethostent( int stayopen );
Arguments:
- stayopen
- Nonzero if you want all queries to the name server to use TCP and
you want the connection to be retained after each call to
gethostbyname() or
gethostbyaddr().
If the stayopen flag is zero, queries use UDP datagrams.
Library:
libsocket
Use the -l socket option to qcc to link against this library.
Description:
The sethostent() routine opens the host database file.
You can use the sethostent() function to request the use of a connected TCP socket for queries.
Classification:
| Safety: | |
|---|---|
| Cancellation point | Yes |
| Interrupt handler | No |
| Signal handler | No |
| Thread | No |
Caveats:
This function uses static data; if you need the data for future use, you should copy it before any subsequent calls overwrite it.
Page updated: