| BOOL IsReadable( |
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INT nTimeout, |
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LPDWORD lpdwAvail |
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| ); |
The IsReadable method is used to determine if data is
available to be read from the server.
Parameters
- nTimeout
- Timeout for server response, in seconds. A value of zero
specifies that the connection should be polled without blocking the
current thread.
- lpdwAvail
- A pointer to an unsigned integer which will contain the
number of bytes available to read. This parameter may be NULL if
this information is not required.
Return Value
If the client can read data from the server within the
specified timeout period, the method returns a non-zero value. If the
client cannot read any data, the method returns zero.
Remarks
On some platforms, this value will not exceed the size of the
receive buffer (typically 64K bytes). Because of differences between
TCP/IP stack implementations, it is not recommended that your
application exclusively depend on this value to determine the exact
number of bytes available. Instead, it should be used as a general
indicator that there is data available to be read.
Requirements
Minimum Desktop Platform: Windows 7 (Service Pack 1)
Minimum Server Platform: Windows Server 2008 R2 (Service Pack 1)
Header File: cstools10.h
Import Library: csnwsv10.lib
See Also
GetStatus,
IsBlocking,
IsConnected,
IsInitialized,
IsWritable, Write
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