Transport-provider-specific areas of TLI

Three aspects of TLI are left to be defined by a particular transport provider:

• pathnames to open with the t_open function, and the types of service provided with them

• the syntax and semantics of transport addresses, used with the t_accept, t_bind, t_connect, t_listen, t_rcvconnect, t_rcvudata, t_rcvuderr, t_snddis, and t_sndudata functions
  

• the syntax and semantics of transport provider options, specified in the arguments to the t_accept, t_optmgmt, t_rcvconnect, t_rcvudata, t_rcvuderr, t_snddis, and t_sndudata functions