Descriptions of TCP Extensions for Transactions (T/TCP), TCP Extensions for High Performance, and High Performance Send (HPS) have been added to Sockets General Programming Information.
The Resource ReSerVation Protocol (RSVP) has been added. See:
Support for Berkley Software Distribution (BSD) Version 4.4 is added.
In Protocol-Independent C Sockets API, changes have been made to getsockopt() and setsockopt(). sysctl() has been added. The ioctl() call has been split into os2_ioctl() for OS/2 and ioctl() for BSD, and the select() call has been split into os2_select() for OS/2 and select() for BSD. The sock_init() call has been removed.
In TCP/IP Network Utility Routines API, the bswap(), lswap() and tcp_h_errno() calls have been removed.
In File Transfer Protocol API, additions have been made to the host parameter to allow you to specify the port number used by the FTP server.