IO Stream CPC Host Application#

On the host side, use the Python script cpc_iostream_bridge.py to bridge the CPC host CLI endpoint to a network socket. This allows communication with the secondary device through a telnet terminal.

CPC Host Iostream Bridge#

The cpc_iostream_bridge.py script is used in conjunction with the cpc_iostream and cli components running on the secondary device. For proper operation, the CPC daemon must be up and running on the host side before starting the bridge script.

Usage#

The script accepts the following mandatory arguments:

• -n, --name INSTANCE_NAME: The CPC daemon instance name.

• -l, --library LIB_NAME: The path and name of the CPC library.

• -p, --port PORT_NUMBER: The network bridge port number to use.

An optional -v, --verbose flag is available for verbose output.

Example:

$ python cpc_iostream_bridge.py -n cpcd_0 -l build/libcpc.so -p 8080 -v
BRIDGE: Listen OK
BRIDGE: CPC Init success
$ python cpc_iostream_bridge.py -n cpcd_0 -l build/libcpc.so -p 8080 -v
BRIDGE: Listen OK
BRIDGE: CPC Init success

Test the bridge by opening a telnet connection:

$ telnet localhost 8080
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
$ telnet localhost 8080
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.