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PR_GetProtoByNumber
===================
Looks up a protocol entry based on protocol's number.
Syntax
------
.. code::
#include <prnetdb.h>
PRStatus PR_GetProtoByNumber(
PRInt32 protocolnumber,
char* buffer,
PRInt32 bufsize,
PRProtoEnt* result);
Parameters
~~~~~~~~~~
The function has the following parameters:
``protocolnumber``
The number assigned to the protocol.
``buffer``
A pointer to a scratch buffer for the runtime to return result. This
buffer is allocated by the caller.
``bufsize``
Number of bytes in the ``buffer`` parameter. The buffer must be at
least :ref:`PR_NETDB_BUF_SIZE` bytes.
``result``
On input, a pointer to a :ref:`PRNetAddr` structure. 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`.
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