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c0de net 0.1.0
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Examples ​

Complete programs that use c0de_net/http. The servers are examples; replace them with the API you want to use.

Weather forecast ​

Reads a forecast as JSON and prints it.

FROM_JSON of c0de/strings reads the answer into a struct. The elements of the struct must match the keys of the JSON object.

c0de
PROGRAM weather
NOOP
INCLUDE c0de_net/http
INCLUDE c0de/strings
NOOP
STRUCT forecast
BEGIN
    sky STRING
    temperature FLOAT
END STRUCT
NOOP
FUNCTION show
BEGIN
    VARIABLE api STRUCT c0de_net/http/HTTP_CONNECTION
    VARIABLE answer STRING
    VARIABLE today STRUCT forecast
    ASSIGN api.use_ssl TRUE ;
    ASSIGN api.server "weather.example.com" ;
    CALL c0de_net/http/HTTP_GET
        PARAMETER connection api ;
        PARAMETER endpoint "/today?city=Berlin" ;
        RESULT result answer
    CALL c0de/strings/FROM_JSON
        PARAMETER source answer ;
        PARAMETER destination today ;
    CALL PRINT
        PARAMETER value today.sky ⊕ ", " ⊕ today.temperature ⊕ " °C" ;
END FUNCTION

Switching a lamp ​

Turns a lamp of a home automation on or off.

Put the trigger block next to a lever and give it a constant item token with the token of your home automation. The request is sent from the computer of the player who flips the lever, so only players in your home network can switch it.

c0de
PROGRAM lamp
NOOP
INCLUDE c0de_net/http
NOOP
FUNCTION switch
    PARAMETER token STRING
    PARAMETER on BOOLEAN TRUE
    RESULT status INTEGER
BEGIN
    VARIABLE api STRUCT c0de_net/http/HTTP_CONNECTION
    VARIABLE state STRING "{\"on\": false}"
    ASSIGN api.server "192.168.1.20" ;
    ASSIGN api.port 8123 ;
    ASSIGN api.base_endpoint "/api" ;
    ASSIGN api.headers["Authorization"] "Bearer " ⊕ token ;
    ASSIGN api.headers["Content-Type"] "application/json" ;
    IF on ;
    BEGIN
        ASSIGN state "{\"on\": true}" ;
    END IF
    CALL c0de_net/http/HTTP_PUT
        PARAMETER connection api ;
        PARAMETER endpoint "/lamps/kitchen" ;
        PARAMETER data state ;
        RESULT status status
END FUNCTION

Handling errors ​

Checks whether a server answers and returns an exit code instead of crashing.

The exit code is 0 if the server answers, 1 if it answers with an error status and 2 if there is no answer. A comparator next to the trigger block reads it.

c0de
PROGRAM ping
NOOP
INCLUDE c0de_net/http
NOOP
FUNCTION check
    PARAMETER host STRING
BEGIN
    VARIABLE api STRUCT c0de_net/http/HTTP_CONNECTION
    VARIABLE problem ERROR
    ASSIGN api.use_ssl TRUE ;
    ASSIGN api.server host ;
    ASSIGN api.timeout 5 ;
    CALL c0de_net/http/HTTP_HEAD problem
        PARAMETER connection api ;
    IF problem.code = 1000 ;
    BEGIN
        EXIT 1 ;
    END IF
    IF problem.code ≠ 0 ;
    BEGIN
        EXIT 2 ;
    END IF
    EXIT 0 ;
END FUNCTION