PR_EnumerateHostEnt¶

Evaluates each of the possible addresses of a PRHostEnt structure, acquired from PR_GetHostByName or PR_GetHostByAddr.

Syntax¶

#include <prnetdb.h>

PRIntn PR_EnumerateHostEnt(
  PRIntn enumIndex,
  const PRHostEnt *hostEnt,
  PRUint16 port,
  PRNetAddr *address);

The function has the following parameters:

enumIndex: The index of the enumeration. To begin an enumeration, this argument is set to zero. To continue an enumeration (thereby getting successive addresses from the host entry structure), the value should be set to the function’s last returned value. The enumeration is complete when a value of zero is returned.
hostEnt: A pointer to a PRHostEnt structure obtained from PR_GetHostByName or PR_GetHostByAddr.
port: The port number to be assigned as part of the PRNetAddr structure. This parameter is not checked for validity.
address: On input, a pointer to a PRNetAddr structure. On output, this structure is filled in by the runtime if the result of the call is greater than 0.

The function returns one of the following values:

If successful, the function returns the value you should specify in the enumIndex parameter for the next call of the enumerator. If the function returns 0, the enumeration is ended.
If unsuccessful, the function returns -1. You can retrieve the reason for the failure by calling PR_GetError.

PR_EnumerateHostEnt is a stateless enumerator. The principle input, the PRHostEnt structure, is not modified.