WeasyPrint Daemon
Protocol
start header
On startup, wpd sends a header to stdout, always on a single line:
{"wpd": "<implementation name>", "version": "<version>", "protocol": "1"}\njob submission
job submission, to stdin:
{"id": "xxx", "css": "css content", "size": <html content size>}\n
html content\nThe json header must be on one line.
cancel job
{"id": "xxx", "action": "cancel"}\nThe job may be canceled by the renderer, but may also be rendered and returned.
get results
result retrieval, from stdout:
{"id": "xxx", "size": <file size>}\n
PDF content\nThe json header will always be on one line.
Any error will be reported as following:
{"id": "xxx", "error": ""}stopping
To stop the daemon, just close stdin