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fix case where websocket collision crashes frames #227

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fix case where websocket collision crashes frames #227

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498bfb2
fix case where websocket collision crashes frames
Mar 24, 2022
1507024
improve naming consistency in log messages
Mar 24, 2022
0e8537c
switch to message to avoid invoking the debugger
Mar 24, 2022
300b220
use defvar for internal var not defcustom
Mar 24, 2022
eec5d8b
remove unnecessary ignore-errors
Mar 24, 2022
7b9b36c
favor function to check server state for reusability
Mar 26, 2022
db27625
fix bug where processes resolve to unexpected vals
Apr 25, 2022
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45 changes: 27 additions & 18 deletions org-roam-ui.el
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Original file line number Diff line number Diff line change
Expand Up @@ -177,26 +177,35 @@ This serves the web-build and API over HTTP."
:group 'org-roam-ui
:init-value nil
(cond
(org-roam-ui-mode
((and org-roam-ui-mode (not (org-roam-ui-server-runningp)))
(message "org-roam-ui server :: starting up...")
;;; check if the default keywords actually exist on `orb-preformat-keywords'
;;; else add them
(setq-local httpd-port org-roam-ui-port)
(setq httpd-root org-roam-ui-app-build-dir)
(httpd-start)
(setq org-roam-ui-ws-server
(websocket-server
35903
:host 'local
:on-open #'org-roam-ui--ws-on-open
:on-message #'org-roam-ui--ws-on-message
:on-close #'org-roam-ui--ws-on-close))
(when org-roam-ui-open-on-start (org-roam-ui-open)))
(t
(progn
(websocket-server-close org-roam-ui-ws-server)
(httpd-stop)
(remove-hook 'after-save-hook #'org-roam-ui--on-save)
(org-roam-ui-follow-mode -1)))))
(setq-local httpd-port org-roam-ui-port)
(setq httpd-root org-roam-ui-app-build-dir)
(httpd-start)
(setq org-roam-ui-ws-server
(websocket-server
35903
:host 'local
:on-open #'org-roam-ui--ws-on-open
:on-message #'org-roam-ui--ws-on-message
:on-close #'org-roam-ui--ws-on-close))
(when org-roam-ui-open-on-start (org-roam-ui-open)))
(org-roam-ui-mode
(message (format "org-roam-ui server already runnning.")))
(t
(progn
(message "org-roam-ui server :: shutting down...")
(if org-roam-ui-ws-server
(websocket-server-close org-roam-ui-ws-server))
(httpd-stop)
(remove-hook 'after-save-hook #'org-roam-ui--on-save)
(org-roam-ui-follow-mode -1)))))

(defun org-roam-ui-server-runningp ()
"True if the server is running or listening, otherwise false."
(and org-roam-ui-ws-server (member (process-status org-roam-ui-ws-server) '(listen run)) t))

(defun org-roam-ui--ws-on-open (ws)
"Open the websocket WS to org-roam-ui and send initial data."
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