Multitech MultiConnect Adapter Betriebsanweisung PDF herunterladen (Seite 61)

Chapter 2 – Command Line Interface (CLI)

Command Line Interface and Application Examples for Multi-Tech Systems, Inc. IP Modules (S000368F) 61

RAW TCP/UDP Socket Support Setup

Commands

Command Syntax socket tcp <remote-ip> <remote-port>

Description

Opens a TCP client socket and attempts to connect it to the specified remote port on

a specified remote server. The remote server should be set with a DNS resolvable

name or IP address.

Upon successful connection, a socket handle is returned for future socket

transactions.

Default Value

Success

<socket handle > OK

Error 1. Too few arguments

Type socket tcp ? for more information

2. Connection refused

connect: Connection refused

Command Syntax socket tcplisten <local-port> [backlog]

Description

Opens a TCP Listen socket on the local port.

The backlog specifies the maximum number of remote connections allowed through

the listen socket at any given time.

The listen socket automatically accepts remote connection requests (<=backlog)

and spawns a new TCP socket which can send or receive data. The tcplisten

command, upon success, returns a server socket handle.

The listen sockets are created when a remote host tries to connect and the

connections are accepted.

Default Value

Success

TCP Listen socket handle <server socket handle>

Error 1. Too few arguments

Type socket tcplisten ? for more information

2. Address already in use

bind: Address already in use.

Command Syntax socket udp <remote_ip> <remote_port> [local_port]

Description

If the host is given as 0.0.0.0, it opens a non-connected UDP listen socket and

automatically latches to the IP address of the first UDP packet received.

If the remote-port is set to 0, it opens a non-connected UDP listen socket and

automatically latches to the port of the first UDP packet received.

If the remote-host and remote-port are nonzero values, the IP Module acts as a

UDP client sending/receiving data to the specified host and port.

If the optional local-port is mentioned, the socket is bound to this port instead of

taking the port from internal pool.

Returns the corresponding socket handle for future socket transactions.

Default Value

Success

<socket handle> OK

Error 1. Too few arguments

Type socket udp ? for more information

2. Address already in use

bind: Address already in use.

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