|| (only available on Wx PLC firmware >= F94.4)
||Return the status of the last HTTP_COMMAND
||There are 3 valid HTTP_STATUS parameter
values; ie. 1 (HTTP Response status codes from server) and 2 (returned data availability status).
3 (HTTP_COMMAND process status)
The value returned by HTTP_STATUS(1), HTTP_STATUS(2) and HTTP_STATUS(3) is an integer
that could negative, zero, or positive. Each return value
corresponds to the state and circumstances of the HTTP_COMMAND.
The possible return values for these HTTP_STATUS function parameter
values are specified below.
|| This contains the response code received from the HTTP web server
that the HTTP_COMMAND connected to. E.g. 200 when successfully retrieve the file. 404 when file is not found. etc.
0 = Initial state or after a network reset.
200 = Request Completed. Successfully processed request and received response from web server. Additionally, the request has been completed successfully. Read the response data using INPUT_STR(1) function.
202 = Request Accepted. Successfully processed request and received response from web server. However, it is not known if the request completed successfully. Read the response data using INPUT_STR(1) function.
404 = file requested by HTTP_COMMAND is not found.
||Check if there are still response data from webserver that can be read by HTTP_INPUT$(1) command.
0 = No data. INPUT_STR$(1) will return an empty string.
1 = Response data from web server is available. Read it using the HTTP_INPUT$(1) command.
FOR I = 1 to 100
IF INPUT_STATUS(2) = 0 ' No more response data to read
A$ = HTTP_INPUT$(1)
PRINT #7 A$
||Check if the last HTTP_COMMAND task has been successfully scheduled.
0 = Last HTTP_COMMAND task is scheduled and is in progress
1 = Last HTTP_COMMAND task successfully completed.
-1 = Last HTTP_COMMAND task failed. Check system & user log for the cause of the error.
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