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+PR_Send
+=======
+
+Sends bytes from a connected socket.
+
+
+Syntax
+------
+
+.. code::
+
+ #include <prio.h>
+
+ PRInt32 PR_Send(
+ PRFileDesc *fd,
+ const void *buf,
+ PRInt32 amount,
+ PRIntn flags,
+ PRIntervalTime timeout);
+
+
+Parameters
+~~~~~~~~~~
+
+The function has the following parameters:
+
+``fd``
+ A pointer to a :ref:`PRFileDesc` object representing a socket.
+``buf``
+ A pointer to a buffer containing the data to be sent.
+``amount``
+ The size of ``buf`` (in bytes).
+``flags``
+ This obsolete parameter must always be zero.
+``timeout``
+ A value of type :ref:`PRIntervalTime` specifying the time limit for
+ completion of the receive operation.
+
+
+Returns
+~~~~~~~
+
+The function returns one of the following values:
+
+- A positive number indicates the number of bytes successfully sent. If
+ the parameter fd is a blocking socket, this number must always equal
+ amount.
+- The value -1 indicates a failure. The reason for the failure can be
+ obtained by calling :ref:`PR_GetError`.
+
+
+Description
+-----------
+
+:ref:`PR_Send` blocks until all bytes are sent, a timeout occurs, or an
+error occurs.