Connection - TCP

The TCP Connection stores the IP address, port, and encoding properties used to create TCP listeners or clients and perform simple message-based communication.

About TCP

The Transmission Control Protocol (TCP) is one of the main protocols of the Internet protocol suite. TCP provides reliable, ordered, and error-checked delivery of a stream of bytes between applications running on hosts communicating via an IP network. TCP is connection-oriented, and a connection between client and server is established before data can be sent. The server must be listening (passive open) for connection requests from clients before a connection is established.

The TCP Connection is used in the Net - TCP Task (which acts as a TCP client) and the Event trigger - TCP Trigger (which acts as a TCP server, or listener).

Manage Connections > Add > TCP > Common settings tab

Name

A descriptive name for the connection to distinguish it from other connections.

Group

The group that the connection is a part of.

Timeout

The amount of time, in seconds, that a TCP client (both in the Net - TCP Task and the Event trigger - TCP Trigger) will wait to receive data once a read operation is initiated.

Code page

The encoding used for text messages sent by the TCP client to the TCP server and vice versa.

Manage Connections > Add > TCP > Connection settings tab

Address

The host address of the TCP server. Can be an IP address in dotted-quad notation (IPv4), colon-hexadecimal notation (IPv6), or a DNS name (TCP Task only).

Port

For the TCP Task: the port number of the remote host to connect to. For the TCP Trigger: the port on which to listen for incoming connection attempts. Default: 9090.

Maximum number of connected clients

The maximum number of simultaneously connected TCP clients allowed when acting as a TCP listener. Set to 0 for an unlimited number of clients. Click Reset to restore the default value.

Log sent messages to task output

When checked, all messages sent from VisualCron to the remote TCP server are logged and stored in the Task output.

Log received messages to task output

When checked, all messages received by VisualCron from the remote TCP server are logged and stored in the Task output.