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 | No |
| Interrupt handler | No |
| Signal handler | No |
| Thread | No |
Caveats:
This function uses static data; if the data is needed for future use, it should be copied before any subsequent calls overwrite it.