Bug 42636 – WebSocket() constructor should throw SYNTAX_ERR if URL has zero or one slash after 'ws:' or 'wss:'

• Component: New Bugs
• Status: VERIFIED INVALID

[Simon Pieters (:zcorpan)]

WebKit implies the slashes if they're missing in WebSocket URLs.

new WebSocket('ws:example.org/');
new WebSocket('ws:/example.org/');

Apparently no slashes means no authority (user/pass+host+port), which doesn't
make sense for websocket, and websocket requires an absolute URL. So I think
the above cases should throw SYNTAX_ERR.

Also see https://bugzilla.mozilla.org/show_bug.cgi?id=580234

[Alexey Proskuryakov]

Mozilla folks seem to disagree that this is a bug, and I think they are right.

[Alexey Proskuryakov]

http://www.w3.org/Bugs/Public/show_bug.cgi?id=10213

[Brent Fulgham]

Since Mozilla and Alexey think current behavior is correct, closing this.

[Simon Pieters (:zcorpan)]

https://www.w3.org/Bugs/Public/show_bug.cgi?id=17772#c5

e.g. for ws:example.org/ (no base url)

https://url.spec.whatwg.org/#scheme-state
"Otherwise, if url is special, set state to special authority slashes state."
->
https://url.spec.whatwg.org/#special-authority-slashes-state
"Otherwise, syntax violation, set state to special authority ignore slashes state, and decrease pointer by one."
->
https://url.spec.whatwg.org/#special-authority-ignore-slashes-state
"If c is neither "/" nor "\", set state to authority state, and decrease pointer by one."
->
https://url.spec.whatwg.org/#authority-state
"Otherwise, append c to buffer."

...etc; it will parse successfully and up with the same URL record as for ws://example.org/

[Simon Pieters (:zcorpan)]

w-p-t test at 
http://w3c-test.org/websockets/constructor/017.html