Library: TCP/IP client and server support (OMTCP)
Import : omtcp.xmd
Returns: An external output through which data can be written to the tcp connection.
define external string sink function tcp.writer of value tcp.connection Connection timeout value integer ms optional protocol value tcp.io-protocol Protocol optional
Use tcp.writer to obtain an external output object, permitting writes on the connection.
Connection must exist (else external exception TCP05).
Protocol cannot be Single-Packet (else external exception TCP19).
There may not be an active external source derived from Connection with tcp.writer (else external exception TCP20).
The timeout value applies to individual write operations. External exception TCP06 is thrown if the write operation times out. If a timeout value is not specified, this function blocks until data is written, or until an error occurs.
tcp.writer can be called once or more than once for a connection, but only if called serially. All streams derived from a tcp.writer write to the same output stream attachment, but may each have their own transformation logic and buffering.
import "omtcp.xmd" prefixed by tcp. process local tcp.connection Connection-1 local stream s set Connection-1 to tcp.connect to "localhost" on 5300 tcp.set-buffering of Connection-1 enabled false open s with binary-mode as tcp.writer of Connection-1 protocol tcp.multi-packet put s ("=" ||* 3048 || "%n") ||* 10 put s "hello world" close s repeat exit unless tcp.is-connected Connection-1 output tcp.get-string from Connection-1 again