DIGITAL TCP/IP Services for OpenVMS
System Services and C Socket Programming

• TCP
  • client examples
    • C Socket
    • MACRO
    • OpenVMS
  • protocol options
  • server examples
    • C Socket
    • C Socket auxiliary server
    • MACRO
    • OpenVMS
    • OpenVMS auxiliary server
• TCP/IP
  • accepting a connection
  • client calling sequence
  • client connection initiation
  • making a socket a listener
  • reading out-of-band data
  • sending out-of-band data
  • server calling sequence #1
  • server calling sequence #2
• TCP/IP socket options
• TCP sockets
• Time-to-live datagram option
• Timeout
  • default
• Timeout intervals
  • $DASSGN
  • default
  • drop
  • IO$_ACCESS
  • IO$_READVBLK
  • KEEPALIVE
• timeval structure
  • members
• TOS option
• TTL option
• Type of service option

• UCBDEF macro
• UCX command
  • SHOW DEVICE_SOCKET
• UCX$C_BROADCAST option
• UCX$C_DATA
  • field
• UCX$C_DONTROUTE option
• UCX$C_ERROR option
• UCX$C_IOCTL
  • field
• UCX$C_IOCTL option
• UCX$C_IOCTL parameters
• UCX$C_IPOPT
  • field
• UCX$C_IPOPT parameter types
• UCX$C_IPOPT parameters
• UCX$C_IP_TOS option
• UCX$C_IP_TTL option
• UCX$C_KEEPALIVE option
• UCX$C_LINGER option #1
• UCX$C_LINGER option #2
• UCX$C_LINGER option #3
• UCX$C_MSG_OOB flag
• UCX$C_RAW socket type
• UCX$C_RAW_IP protocol
• UCX$C_SOCKOPT
  • field
• UCX$C_SOCKOPT parameters
• UCX$C_SOCK_NAME parameter
• UCX$C_TCP protocol
• UCX$C_TCPOPT
  • field
• UCX$C_TCPOPT parameters
• UCX$C_TCP_DROP_IDLE option
• UCX$C_TCP_PROBE_IDLE option
• UCX$C_UDP protocol
• UCX$C_USELOOPBACK option
• UCX$DEVICE:
• UCX$DEVICE
  • See Internet pseudodevice
• UCX$EXAMPLES:
• UCX$FULL_DUPLEX_CLOSE option
  • set for error notification
• UCX$INETDEF file
• UCX$M_PEEK modifier
  • IO$_READVBLK function
• UCX$_C_SOCK_NAME argument
• UDP
  • broadcasting messages
  • client examples
    • C Socket
    • MACRO
    • OpenVMS
  • protocol
    • client calling sequence
  • sending a communication request
  • server examples
    • C Socket
    • MACRO
    • OpenVMS
  • writing data
• UDP/IP
  • protocol
    • server calling sequence
• UDP sockets
• UNIX completion status fields

• VAX C
  • linking programs
• vaxc$get_sdc()
  • description
• Volume information

• Warnings
  • compilation
• Wildcard addressing
• WRITE I/O operation
  • See IO$_WRITEVBLK function
• Write operation
  • broadcasting
    • with C Socket routine
    • with $QIO system service
  • out-of-band data
    • with C Socket routine
    • with $QIO system service
  • required privileges for UDP
  • sending datagrams
    • with $QIO system service
  • specifying out-of-band data
  • specifying UDP
  • with C Socket routine
  • with $QIO system service
• write() socket routine
• Write virtual block
  • See IO$_WRITEVBLK

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