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t_getprotaddr(3n) -- get protocol-specific service information
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The t_getprotaddr() function returns local and remote protocol addresses currently associated with the transport endpoint specified by fd. In boundaddr and peeraddr the user specified maxlen, which is the maximum size of the address buffer, and buf which points to the buffer where the address is to be placed. On return, the buf field of bounda
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t_getstate(3n) -- get the current state
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The t_getstate function returns the current state of the provider associated with the transport endpoint specified by fd. This function resides within both the X/Open compliant libxnet and the SVR4 compliant libnsl Network Services libraries. Network Services applications which require X/Open compliance must link-load with -lxnet. Network Services applications which require SVR4 compliance must linkload wit... |
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t_listen(3n) -- listen for a connect request
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This function listens for a connect request from a calling transport user. fd identifies the local transport endpoint where connect indications arrive, and on return, call contains information describing the connect indication. call points to a t_call structure, which contains the following members: struct netbuf addr; truct netbuf opt; struc... |
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t_look(3n) -- look at the current event on a transport endpoint
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This function returns the current event on the transport endpoint specified by fd. This function enables a transport provider to notify a transport user of an asynchronous event when the user is issuing functions in synchronous mode. Certain events require immediate notification of the user and are indicated by a specific error, TLOOK, on the current or next function to be executed. This function also enables a transport user to poll a transport endpoint periodically for asy... |
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t_open(3n) -- establish a transport endpoint
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t_open must be called as the first step in the initialization of a transport endpoint. This function establishes a transport endpoint by opening a UNIX file that identifies a particular transport provider (that is, transport protocol) and returning a file descriptor that identifies that endpoint. For example, opening the file /dev/iso_cots identifies an OSI connection-oriented transport layer protocol as the transport provider. path ... |
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t_optmgmt(3n) -- manage options for a transport endpoint
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The t_optmgmt function enables a transport user to retrieve, verify, or negotiate protocol options with the transport provider. fd identifies a bound transport endpoint. The req and ret arguments point to a t_optmgmt structure containing the following members: struct netbuf opt; long flags; The opt field identifies protocol options and the... |
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t_rcv(3n) -- receive data or expedited data sent over a connection
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This function receives either normal or expedited data. fd identifies the local transport endpoint through which data will arrive, buf points to a receive buffer where user data will be placed, and nbytes specifies the size of the receive buffer. flags may be set on return from t_rcv and specifies optional flags as described below. By default, t_rcv operates in synchronous mode and will wait for data to arrive if none is cur... |
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t_rcvconnect(3n) -- receive the confirmation from a connect request
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This function enables a calling transport user to determine the status of a previously sent connect request and is used in conjunction with t_connect to establish a connection in asynchronous mode. The connection will be established on successful completion of this function. fd identifies the local transport endpoint where communication will be established, and call contains information associated with the newly established connection. call p... |
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t_rcvdis(3n) -- retrieve information from disconnect
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This function is used to identify the cause of a disconnect, and to retrieve any user data sent with the disconnect. fd identifies the local transport endpoint where the connection existed, and discon points to a t_discon structure containing the following members: struct netbuf udata; int reason; int sequence; netbu |
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t_rcvrel(3n) -- acknowledge receipt of an orderly release indication
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This function is used to acknowledge receipt of an orderly release indication. fd identifies the local transport endpoint where the connection exists. After receipt of this indication, the user should not attempt to receive more data because such an attempt will block forever. However, the user may continue to send data over the connection if t_sndrel has not been issued by the user. This function is an optional service of the transport provider, and is only supported ... |
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t_rcvudata(3n) -- receive a data unit
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This function is used in connectionless mode to receive a data unit from another transport user. fd identifies the local transport endpoint through which data will be received, unitdata holds information associated with the received data unit, and flags is set on return to indicate that the complete data unit was not received. unitdata points to a t_unitdata structure containing the following members:... |
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t_rcvuderr(3n) -- receive a unit data error indication
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This function is used in connectionless mode to receive information concerning an error on a previously sent data unit, and should be issued only after a unit data error indication. It informs the transport user that a data unit with a specific destination address and protocol options produced an error. fd identifies the local transport endpoint through which the error report will be received, and uderr points to a t_uderr structure containing the following... |
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t_snd(3n) -- send data or expedited data over a connection
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This function is used to send either normal or expedited data. fd identifies the local transport endpoint over which data should be sent, buf points to the user data, nbytes specifies the number of bytes of user data to be sent, and flags specifies any optional flags described below. By default, t_snd operates in synchronous mode and may wait if flow control restrictions prevent the data from being accepted by the local transport provid... |
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t_snddis(3n) -- send user-initiated disconnect request
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This function is used to initiate an abortive release on an already established connection or to reject a connect request. fd identifies the local transport endpoint of the connection, and call specifies information associated with the abortive release. call points to a t_call structure that contains the following members: struct netbuf addr; struct netbuf op<... |
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t_sndrel(3n) -- initiate an orderly release
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This function is used to initiate an orderly release of a transport connection and indicates to the transport provider that the transport user has no more data to send. fd identifies the local transport endpoint where the connection exists. After issuing t_sndrel, the user may not send any more data over the connection. However, a user may continue to receive data if an orderly release indication has not been received. This function is an optional service of the transp... |
