Reserved Identifiers
136
NetLinx Programming Language Reference Guide
Keywords & Run-Time Library Functions (Cont.)
IP_MC_SERVER_OPEN
This function opens a server port to listen for UDP multicast messages.
SINTEGER IP_MC_SERVER_OPEN(INTEGER LocalPort, CHAR
MultiCastIP[], LONG ServerPort)
Parameters:
•
LocalPort
: The local port number to open. This number must be passed to
IP_SERVER_CLOSE
to close the port.
•
MultiCastIP
: A character string representing the multicast address to
receive on in the form of: '239.255.255.250'.
•
ServerPort
: The UDP multicast port number to listen on.
Result:
This function always returns 0. Errors are returned via the
DATA_EVENT
ONERROR
method. The following error may be returned:
2: General failure (out of memory)
10: Binding error
11: Listening error
14: Local port already used
15: UDP socket already listening
16: Too many open sockets
Example:
IP_MC_SERVER_OPEN (PORT1,'239.255.255.250',1900)
IP_SERVER_CLOSE
This function closes a port opened with
IP_SERVER_OPEN
or
IP_MC_SERVER_OPEN
.
IP_SERVER_CLOSE (INTEGER LocalPort)
Parameters:
•
LocalPort
: The number of the local port to close.
Result: This function always returns 0. Errors are returned via the
DATA_EVENT ONERROR
method. The following error may be returned:
9: Already closed
Example:
IP_Server_Close(PORT1)
See the
IP Communication
section on page 189 for more information.
Summary of Contents for NETLINX PROGRAMMING LANGUAGE
Page 15: ...Table of Contents xiii NetLinx Programming Language Reference Guide...
Page 16: ...xiv NetLinx Programming Language Reference Guide Table of Contents...
Page 18: ...Introduction 2 NetLinx Programming Language Reference Guide...
Page 76: ...Language Elements 60 NetLinx Programming Language Reference Guide...
Page 106: ...Combining Devices Levels and Channels 90 NetLinx Programming Language Reference Guide...
Page 112: ...Master To Master M2M 96 NetLinx Programming Language Reference Guide...
Page 182: ...Reserved Identifiers 166 NetLinx Programming Language Reference Guide...
Page 204: ...NetLinx UniCode Functions 188 NetLinx Programming Language Reference Guide...
Page 244: ...Appendix B Glossary 228 NetLinx Programming Language Reference Guide...
Page 245: ...Appendix B Glossary 229 NetLinx Programming Language Reference Guide...