critical impact:

ntohs and ntohl - different header files (CrCh219)

Problem description

The Tru64 UNIX and HP-UX header files for the ntohs and ntohl functions are different.

On Tru64 UNIX, the routines are defined in the following header file:

<arpa/inet.h>

On HP-UX, the routines are defined in the following header file:

<netinet/in.h>

For _XOPEN_SOURCE_EXTENDED only, the routines are defined in the following header file:

<arpa/inet.h>

Identifiers

ntohl

ntohs

See also

• Background information on networking impacts
• ntohl(3)
• ntohs(3)

Solution description

Modify the code to include the correct header files.

For ntohs and ntohl to function correctly on HP-UX, change all occurrences of <arpa/inet.h> to <netinet.h>. If you are using UNIX 98 sockets, continue to use <arpa/inet.h>.

Note that on HP-UX, ntohs and ntohl are defined as null macros because the host and network byte order are identical. Review the applicable manpages and code for more information.

See also

• byteorder(3N)

Problem summary