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