ref: 303886cf25bb8cec869a9dc7ec1c38871667aaf1
dir: /README.md/
## Overview Plumb is a drop-in replacement for plan9's [plumb](https://9fans.github.io/plan9port/man/man1/plumb.html) utility. Notably different from it, are how it handles the `type` attribute of the plumb messages. They will be set to a proper mimetype, instead of the simple `type is text` that the traditional plumber utilized. This is considerably more powerful, as you no longer need to attempt to infer the content based on URIs, extensions, or directory structure. ## Rules Your plumber rules will have to be updated to reflect this more granular message: ## In this example, plan9front's plumber is being used; but similar rule changes would apply for plan9 regular. type is image/png # No longer need to match paths #data matches '[a-zA-Z¡-0-9_\-./@]+' #data matches '([a-zA-Z¡-0-9_\-./@]+)\.(jpe?g|JPE?G|gif|GIF|tiff?|TIFF?|ppm|bit|png|PNG)' arg isfile $0 plumb to image plumb start 9 page $file # local html files (Your dev work, for example) can be opened in your editor type is text/html arg isfile $0 plumb to edit plumb start $editor $0 # remote html files will likely be opened in your browser type is text/html # With the above case matching local files, we no longer need this convolution #data matches '(https?|ftp|file|gopher|mailto|news|nntp|telnet|wais|prospero)://[a-zA-Z0-9_@\-]+([.:][a-zA-Z0-9_@\-]+)*/?[a-zA-Z0-9_?,%#~&/\-+=]+([:.][a-zA-Z0-9_?,%#~&/\-+=]+)*' plumb to web plumb start web $0 type is application/pdf # No longer need to match paths #data matches '[a-zA-Z¡-0-9_\-./@]+' #data matches '([a-zA-Z¡-0-9_\-./@]+)\.(ps|PS|eps|EPS|pdf|PDF|dvi|DVI)' arg isfile $0 plumb to postscript plumb start 9 page $file In practice, setting a rule for most common mimetypes will serve you well. (For example, my last implementation of plumber used a relatively small amount of mimes, after a few years' worth of plumbing in this manner. See https://github.com/halfwit/Plumber/tree/master/cfg/plumber) ## About application/octet-stream mimetype If the remote mimetype is `application/octet-stream`, which is a fallback when it cannot infer the mimetype this client will attempt to find a content-type field in any remote URL, finally setting the type to `text`. - reference for mimetype: https://mimesniff.spec.whatwg.org/ - reasonably robust list of mimetypes: https://www.freeformatter.com/mime-types-list.html