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-rw-r--r-- | docs/nspr/reference/pr_gethostbyaddr.rst | 57 |
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diff --git a/docs/nspr/reference/pr_gethostbyaddr.rst b/docs/nspr/reference/pr_gethostbyaddr.rst new file mode 100644 index 0000000000..7140c5c5dd --- /dev/null +++ b/docs/nspr/reference/pr_gethostbyaddr.rst @@ -0,0 +1,57 @@ +PR_GetHostByAddr +================ + +Looks up a host entry by its network address. + + +Syntax +------ + +.. code:: + + #include <prnetdb.h> + + PRStatus PR_GetHostByAddr( + const PRNetAddr *hostaddr, + char *buf, + PRIntn bufsize, + PRHostEnt *hostentry); + + +Parameters +~~~~~~~~~~ + +The function has the following parameters: + +``hostaddr`` + A pointer to the IP address of host in question. +``buf`` + A pointer to a buffer, allocated by the caller, that is filled in + with host data on output. All of the pointers in the ``hostentry`` + structure point to data saved in this buffer. This buffer is + referenced by the runtime during a call to :ref:`PR_EnumerateHostEnt`. +``bufsize`` + Number of bytes in the ``buf`` parameter. The buffer must be at least + :ref:`PR_NETDB_BUF_SIZE` bytes. +``hostentry`` + This structure is allocated by the caller. On output, this structure + is filled in by the runtime if the function returns ``PR_SUCCESS``. + + +Returns +~~~~~~~ + +The function returns one of the following values: + +- If successful, ``PR_SUCCESS``. +- If unsuccessful, ``PR_FAILURE``. You can retrieve the reason for the + failure by calling :ref:`PR_GetError`. + + +Description +~~~~~~~~~~~ + +:ref:`PR_GetHostByAddr` is used to perform reverse lookups of network +addresses. That is, given a valid network address (of type +:ref:`PRNetAddr`), :ref:`PR_GetHostByAddr` discovers the address' primary +name, any aliases, and any other network addresses for the same host. |