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Merge commit 'e42a64fd0e8dc35f044f16cd7b732f715985cb2c' as 'lib/websocket'

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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* Description
This is a elisp library for websocket clients to talk to websocket
servers, and for websocket servers to accept connections from
websocket clients. This library is designed to be used by other
library writers, to write apps that use websockets, and is not useful
by itself.
An example of how to use the library is in the
[[https://github.com/ahyatt/emacs-websocket/blob/master/websocket-functional-test.el][websocket-functional-test.el]] file.
This library is compatible with emacs 23 and 24, although only emacs
24 support secure websockets.
* Version release checklist
Each version that is released should be checked with this checklist:
- [ ] All ert test passing
- [ ] Functional test passing on emacs 23 and 24
- [ ] websocket.el byte compiling cleanly.
* Existing clients:
- [[https://github.com/tkf/emacs-ipython-notebook][Emacs IPython Notebook]]
- [[https://github.com/syohex/emacs-realtime-markdown-viewer][Emacs Realtime Markdown Viewer]]
- [[https://github.com/jscheid/kite][Kite]]
- [[https://github.com/ancane/markdown-preview-mode][Markdown-preview-mode]]
If you are using this module for your own emacs package, please let me
know by editing this file, adding your project, and sending a pull
request to this repository.

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import logging
import tornado
import tornado.web
from tornado import httpserver
from tornado import ioloop
from tornado import websocket
class EchoWebSocket(websocket.WebSocketHandler):
def open(self):
logging.info("OPEN")
def on_message(self, message):
logging.info(u"ON_MESSAGE: {0}".format(message))
self.write_message(u"You said: {0}".format(message))
def on_close(self):
logging.info("ON_CLOSE")
def allow_draft76(self):
return False
if __name__ == "__main__":
import tornado.options
tornado.options.parse_command_line()
application = tornado.web.Application([
(r"/", EchoWebSocket),
])
server = httpserver.HTTPServer(application)
server.listen(9999, "127.0.0.1")
logging.info("STARTED: Server start listening")
ioloop.IOLoop.instance().start()

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;;; websocket-functional-test.el --- Simple functional testing
;; Copyright (c) 2013, 2016 Free Software Foundation, Inc.
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation; either version 3 of the
;; License, or (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;; General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Usage: emacs -batch -Q -L . -l websocket-functional-test.el
;;
;; Note: this functional tests requires that you have python with the
;; Tornado web server. See http://www.tornadoweb.org/en/stable/ for
;; information on aquiring.
(require 'tls) ;; tests a particular bug we had on emacs 23
(setq debug-on-error t)
(require 'websocket)
(eval-when-compile (require 'cl))
;;;;;;;;;;;;;;;;;;;;;;;
;; Local server test ;;
;;;;;;;;;;;;;;;;;;;;;;;
(message "Testing with local server")
(setq websocket-debug t)
(defvar wstest-server-buffer (get-buffer-create "*wstest-server*"))
(defvar wstest-server-name "wstest-server")
(defvar wstest-server-proc
(start-process wstest-server-name wstest-server-buffer
"python" "testserver.py" "--log_to_stderr" "--logging=debug"))
(sleep-for 1)
(defvar wstest-msgs nil)
(defvar wstest-closed nil)
(message "Opening the websocket")
(defvar wstest-ws
(websocket-open
"ws://127.0.0.1:9999"
:on-message (lambda (_websocket frame)
(push (websocket-frame-payload frame) wstest-msgs)
(message "ws frame: %S" (websocket-frame-payload frame))
(error "Test error (expected)"))
:on-close (lambda (_websocket) (setq wstest-closed t))))
(defun wstest-pop-to-debug ()
"Open websocket log buffer. Not used in testing. Just for debugging."
(interactive)
(pop-to-buffer (websocket-get-debug-buffer-create wstest-ws)))
(sleep-for 0.1)
(assert (websocket-openp wstest-ws))
(assert (null wstest-msgs))
(websocket-send-text wstest-ws "Hi!")
(sleep-for 0.1)
(assert (equal (car wstest-msgs) "You said: Hi!"))
(setf (websocket-on-error wstest-ws) (lambda (_ws _type _err)))
(websocket-send-text wstest-ws "Hi after error!")
(sleep-for 0.1)
(assert (equal (car wstest-msgs) "You said: Hi after error!"))
(websocket-close wstest-ws)
(assert (null (websocket-openp wstest-ws)))
(if (not (eq system-type 'windows-nt))
; Windows doesn't have support for the SIGSTP signal, so we'll just kill
; the process.
(stop-process wstest-server-proc))
(kill-process wstest-server-proc)
;; Make sure the processes are closed. This happens asynchronously,
;; so let's wait for it.
(sleep-for 1)
(assert (null (process-list)) t)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Remote server test, with wss ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(when (>= (string-to-number (substring emacs-version 0 2)) 24)
(message "Testing with wss://echo.websocket.org")
(when (eq system-type 'windows-nt)
(message "Windows users must have gnutls DLLs in the emacs bin directory."))
(setq wstest-ws
(websocket-open
"wss://echo.websocket.org"
:on-open (lambda (_websocket)
(message "Websocket opened"))
:on-message (lambda (_websocket frame)
(push (websocket-frame-payload frame) wstest-msgs)
(message "ws frame: %S" (websocket-frame-payload frame)))
:on-close (lambda (_websocket)
(message "Websocket closed")
(setq wstest-closed t)))
wstest-msgs nil)
(sleep-for 0.3)
(assert (websocket-openp wstest-ws))
(assert (eq 'open (websocket-ready-state wstest-ws)))
(assert (null wstest-msgs))
(websocket-send-text wstest-ws "Hi!")
(sleep-for 1)
(assert (equal (car wstest-msgs) "Hi!"))
(websocket-close wstest-ws))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Local client and server ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(message "Testing with emacs websocket server.")
(message "If this does not pass, make sure your firewall allows the connection.")
(setq wstest-closed nil)
(let ((server-conn (websocket-server
9998
:host 'local
:on-message (lambda (ws frame)
(message "Server received text!")
(websocket-send-text ws
(websocket-frame-payload frame)))
:on-open (lambda (_websocket) "Client connection opened!")
:on-close (lambda (_websocket)
(setq wstest-closed t)))))
(setq wstest-msgs nil
wstest-ws
(websocket-open
"ws://localhost:9998"
:on-message (lambda (_websocket frame)
(push (websocket-frame-payload frame) wstest-msgs)
(message "ws frame: %S" (websocket-frame-payload frame)))))
(assert (websocket-openp wstest-ws))
(websocket-send-text wstest-ws "Hi to self!")
(sleep-for 0.3)
(assert (equal (car wstest-msgs) "Hi to self!"))
(websocket-server-close server-conn))
(assert wstest-closed)
(websocket-close wstest-ws)
(sleep-for 1)
(assert (null (process-list)) t)
(message "\nAll tests passed!\n")

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;;; websocket-test.el --- Unit tests for the websocket layer
;; Copyright (c) 2013 Free Software Foundation, Inc.
;;
;; Author: Andrew Hyatt <ahyatt at gmail dot com>
;; Maintainer: Andrew Hyatt <ahyatt at gmail dot com>
;;
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation; either version 3 of the
;; License, or (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;; General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This defines and runs ert unit tests. You can download ert from:
;; http://github.com/ohler/ert, it also comes with Emacs 24 and above.
(require 'ert)
(require 'websocket)
(eval-when-compile (require 'cl))
(ert-deftest websocket-genbytes-length ()
(loop repeat 100
do (should (= (string-bytes (websocket-genbytes 16)) 16))))
(ert-deftest websocket-calculate-accept ()
;; This example comes straight from RFC 6455
(should
(equal "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="
(websocket-calculate-accept "dGhlIHNhbXBsZSBub25jZQ=="))))
(defconst websocket-test-hello "\x81\x05\x48\x65\x6c\x6c\x6f"
"'Hello' string example, taken from the RFC.")
(defconst websocket-test-masked-hello
"\x81\x85\x37\xfa\x21\x3d\x7f\x9f\x4d\x51\x58"
"'Hello' masked string example, taken from the RFC.")
(ert-deftest websocket-get-bytes ()
(should (equal #x5 (websocket-get-bytes "\x5" 1)))
(should (equal #x101 (websocket-get-bytes "\x1\x1" 2)))
(should (equal #xffffff
(websocket-get-bytes "\x0\x0\x0\x0\x0\xFF\xFF\xFF" 8)))
(should-error (websocket-get-bytes "\x0\x0\x0\x1\x0\x0\x0\x1" 8)
:type 'websocket-unparseable-frame)
(should-error (websocket-get-bytes "\x0\x0\x0" 3))
(should-error (websocket-get-bytes "\x0" 2) :type 'websocket-unparseable-frame))
(ert-deftest websocket-get-opcode ()
(should (equal 'text (websocket-get-opcode websocket-test-hello))))
(ert-deftest websocket-get-payload-len ()
(should (equal '(5 . 1)
(websocket-get-payload-len
(substring websocket-test-hello 1))))
(should (equal '(200 . 3)
(websocket-get-payload-len
(bindat-pack '((:len u8) (:val u16))
`((:len . 126)
(:val . 200))))))
;; we don't want to hit up any limits even on strange emacs builds,
;; so this test has a pretty small test value
(should (equal '(70000 . 9)
(websocket-get-payload-len
(bindat-pack '((:len u8) (:val vec 2 u32))
`((:len . 127)
(:val . [0 70000])))))))
(ert-deftest websocket-read-frame ()
(should (equal (make-websocket-frame :opcode 'text :payload "Hello"
:length (length websocket-test-hello)
:completep t)
(websocket-read-frame websocket-test-hello)))
(should (equal (make-websocket-frame :opcode 'text :payload "Hello"
:length (length websocket-test-hello)
:completep t)
(websocket-read-frame (concat websocket-test-hello
"should-not-be-read"))))
(should (equal (make-websocket-frame :opcode 'text :payload "Hello"
:length (length websocket-test-masked-hello)
:completep t)
(websocket-read-frame websocket-test-masked-hello)))
(should (equal (make-websocket-frame :opcode 'text :payload "Hello"
:length (length websocket-test-hello)
:completep nil)
(websocket-read-frame
(concat (unibyte-string
(logand (string-to-char
(substring websocket-test-hello 0 1))
127))
(substring websocket-test-hello 1)))))
(dotimes (i (- (length websocket-test-hello) 1))
(should-not (websocket-read-frame
(substring websocket-test-hello 0
(- (length websocket-test-hello) (+ i 1))))))
(dotimes (i (- (length websocket-test-masked-hello) 1))
(should-not (websocket-read-frame
(substring websocket-test-masked-hello 0
(- (length websocket-test-masked-hello) (+ i 1)))))))
(defun websocket-test-header-with-lines (&rest lines)
(mapconcat 'identity (append lines '("\r\n")) "\r\n"))
(ert-deftest websocket-verify-response-code ()
(should (websocket-verify-response-code "HTTP/1.1 101"))
(should
(eq 400 (cdr (should-error (websocket-verify-response-code "HTTP/1.1 400")
:type 'websocket-received-error-http-response))))
(should
(eq 200 (cdr (should-error (websocket-verify-response-code "HTTP/1.1 200")))))
(should-error (websocket-verify-response-code "HTTP/1.")
:type 'websocket-invalid-header))
(ert-deftest websocket-verify-headers ()
(let ((accept "Sec-WebSocket-Accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo=")
(invalid-accept "Sec-WebSocket-Accept: bad")
(upgrade "Upgrade: websocket")
(connection "Connection: upgrade")
(ws (websocket-inner-create
:conn "fake-conn" :url "ws://foo/bar"
:accept-string "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="))
(ws-with-protocol
(websocket-inner-create
:conn "fake-conn" :url "ws://foo/bar"
:accept-string "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="
:protocols '("myprotocol")))
(ws-with-extensions
(websocket-inner-create
:conn "fake-conn" :url "ws://foo/bar"
:accept-string "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="
:extensions '("ext1" "ext2"))))
(should (websocket-verify-headers
ws
(websocket-test-header-with-lines accept upgrade connection)))
(should-error
(websocket-verify-headers
ws
(websocket-test-header-with-lines invalid-accept upgrade connection))
:type 'websocket-invalid-header)
(should-error (websocket-verify-headers
ws
(websocket-test-header-with-lines upgrade connection))
:type 'websocket-invalid-header)
(should-error (websocket-verify-headers
ws
(websocket-test-header-with-lines accept connection))
:type 'websocket-invalid-header)
(should-error (websocket-verify-headers
ws
(websocket-test-header-with-lines accept upgrade))
:type 'websocket-invalid-header)
(should-error (websocket-verify-headers
ws-with-protocol
(websocket-test-header-with-lines accept upgrade connection))
:type 'websocket-invalid-header)
(should-error
(websocket-verify-headers
ws-with-protocol
(websocket-test-header-with-lines accept upgrade connection
"Sec-Websocket-Protocol: foo"))
:type 'websocket-invalid-header)
(should
(websocket-verify-headers
ws-with-protocol
(websocket-test-header-with-lines accept upgrade connection
"Sec-Websocket-Protocol: myprotocol")))
(should (equal '("myprotocol")
(websocket-negotiated-protocols ws-with-protocol)))
(should-error
(websocket-verify-headers
ws-with-extensions
(websocket-test-header-with-lines accept upgrade connection
"Sec-Websocket-Extensions: foo")))
(should
(websocket-verify-headers
ws-with-extensions
(websocket-test-header-with-lines
accept upgrade connection "Sec-Websocket-Extensions: ext1, ext2; a=1")))
(should (equal '("ext1" "ext2; a=1")
(websocket-negotiated-extensions ws-with-extensions)))
(should
(websocket-verify-headers
ws-with-extensions
(websocket-test-header-with-lines accept upgrade connection
"Sec-Websocket-Extensions: ext1"
"Sec-Websocket-Extensions: ext2; a=1")))
(should (equal '("ext1" "ext2; a=1")
(websocket-negotiated-extensions ws-with-extensions)))))
(ert-deftest websocket-create-headers ()
(let ((base-headers (concat "Host: www.example.com\r\n"
"Upgrade: websocket\r\n"
"Connection: Upgrade\r\n"
"Sec-WebSocket-Key: key\r\n"
"Sec-WebSocket-Version: 13\r\n")))
(flet ((url-cookie-generate-header-lines
(host localpart secure) ""))
(should (equal (concat base-headers "\r\n")
(websocket-create-headers "ws://www.example.com/path"
"key" nil nil)))
(should (equal (concat base-headers
"Sec-WebSocket-Protocol: protocol\r\n\r\n")
(websocket-create-headers "ws://www.example.com/path"
"key" '("protocol") nil)))
(should (equal
(concat base-headers
"Sec-WebSocket-Extensions: ext1; a; b=2, ext2\r\n\r\n")
(websocket-create-headers "ws://www.example.com/path"
"key" nil
'(("ext1" . ("a" "b=2"))
("ext2"))))))
(flet ((url-cookie-generate-header-lines
(host localpart secure)
(should (equal host "www.example.com:123"))
(should (equal localpart "/path"))
(should secure)
"Cookie: foo=bar\r\n"))
(should (equal (websocket-create-headers "wss://www.example.com:123/path"
"key" nil nil)
(concat
"Host: www.example.com:123\r\n"
"Upgrade: websocket\r\n"
"Connection: Upgrade\r\n"
"Sec-WebSocket-Key: key\r\n"
"Sec-WebSocket-Version: 13\r\n"
"Cookie: foo=bar\r\n\r\n"))))
(should
(string-match
"Host: www.example.com:123\r\n"
(websocket-create-headers "ws://www.example.com:123/path" "key" nil nil)))))
(ert-deftest websocket-process-headers ()
(flet ((url-cookie-handle-set-cookie
(text)
(should (equal text "foo=bar;"))
;; test that we have set the implicit buffer variable needed
;; by url-cookie-handle-set-cookie
(should (equal url-current-object
(url-generic-parse-url "ws://example.com/path")))))
(websocket-process-headers "ws://example.com/path"
(concat
"HTTP/1.1 101 Switching Protocols\r\n"
"Upgrade: websocket\r\n"
"Connection: Upgrade\r\n"
"Set-Cookie: foo=bar;\r\n\r\n")))
(flet ((url-cookie-handle-set-cookie (text) (should nil)))
(websocket-process-headers "ws://example.com/path"
"HTTP/1.1 101 Switching Protocols\r\n")))
(ert-deftest websocket-process-frame ()
(let* ((sent)
(processed)
(deleted)
(websocket (websocket-inner-create
:conn t :url t
:on-message (lambda (websocket frame)
(setq
processed
(websocket-frame-payload frame)))
:accept-string t)))
(dolist (opcode '(text binary continuation))
(setq processed nil)
(should (equal
"hello"
(progn
(funcall (websocket-process-frame
websocket
(make-websocket-frame :opcode opcode :payload "hello")))
processed))))
(setq sent nil)
(flet ((websocket-send (websocket content) (setq sent content)))
(should (equal
(make-websocket-frame :opcode 'pong :payload "data" :completep t)
(progn
(funcall (websocket-process-frame websocket
(make-websocket-frame :opcode 'ping
:payload "data")))
sent))))
(flet ((delete-process (conn) (setq deleted t)))
(should (progn
(funcall
(websocket-process-frame websocket
(make-websocket-frame :opcode 'close)))
deleted)))))
(ert-deftest websocket-process-frame-error-handling ()
(let* ((error-called)
(websocket (websocket-inner-create
:conn t :url t :accept-string t
:on-message (lambda (websocket frame)
(message "In on-message")
(error "err"))
:on-error (lambda (ws type err)
(should (eq 'on-message type))
(setq error-called t)))))
(funcall (websocket-process-frame websocket
(make-websocket-frame :opcode 'text
:payload "hello")))
(should error-called)))
(ert-deftest websocket-to-bytes ()
;; We've tested websocket-get-bytes by itself, now we can use it to
;; help test websocket-to-bytes.
(should (equal 30 (websocket-get-bytes (websocket-to-bytes 30 1) 1)))
(should (equal 300 (websocket-get-bytes (websocket-to-bytes 300 2) 2)))
(should (equal 70000 (websocket-get-bytes (websocket-to-bytes 70000 8) 8)))
(should-error (websocket-to-bytes 536870912 8) :type 'websocket-frame-too-large)
(should-error (websocket-to-bytes 30 3))
(should-error (websocket-to-bytes 300 1))
;; I'd like to test the error for 32-byte systems on 8-byte lengths,
;; but elisp does not allow us to temporarily set constants such as
;; most-positive-fixnum.
)
(ert-deftest websocket-encode-frame ()
;; We've tested websocket-read-frame, now we can use that to help
;; test websocket-encode-frame.
(should (equal
websocket-test-hello
(websocket-encode-frame
(make-websocket-frame :opcode 'text :payload "Hello" :completep t) nil)))
(dolist (len '(200 70000))
(let ((long-string (make-string len ?x)))
(should (equal long-string
(websocket-frame-payload
(websocket-read-frame
(websocket-encode-frame
(make-websocket-frame :opcode 'text
:payload long-string) t)))))))
(flet ((websocket-genbytes (n) (substring websocket-test-masked-hello 2 6)))
(should (equal websocket-test-masked-hello
(websocket-encode-frame
(make-websocket-frame :opcode 'text :payload "Hello"
:completep t) t))))
(should-not
(websocket-frame-completep
(websocket-read-frame
(websocket-encode-frame (make-websocket-frame :opcode 'text
:payload "Hello"
:completep nil) t))))
(should (equal 'close (websocket-frame-opcode
(websocket-read-frame
(websocket-encode-frame
(make-websocket-frame :opcode 'close :completep t) t)))))
(dolist (opcode '(ping pong))
(let ((read-frame (websocket-read-frame
(websocket-encode-frame
(make-websocket-frame :opcode opcode
:payload "data"
:completep t) t))))
(should read-frame)
(should (equal
opcode
(websocket-frame-opcode read-frame)))
(should (equal
"data" (websocket-frame-payload read-frame)))))
;; A frame should be four bytes, even for no-data pings.
(should (equal 2 (websocket-frame-length
(websocket-read-frame
(websocket-encode-frame
(make-websocket-frame :opcode 'ping :completep t) t))))))
(ert-deftest websocket-check ()
(should (websocket-check (make-websocket-frame :opcode 'close :completep t)))
(should-not
(websocket-check (make-websocket-frame :opcode 'close :completep nil)))
(should-not
(websocket-check (make-websocket-frame :opcode 'close :completep t :payload "")))
(should (websocket-check (make-websocket-frame :opcode 'text :completep nil
:payload "incompl")))
(should (websocket-check (make-websocket-frame :opcode 'ping :completep t)))
(should (websocket-check (make-websocket-frame :opcode 'ping :completep t
:payload "")))
(should (websocket-check (make-websocket-frame :opcode 'pong :completep t
:payload "")))
(should-not (websocket-check (make-websocket-frame :opcode 'text))))
(ert-deftest websocket-close ()
(let ((sent-frames)
(processes-deleted))
(flet ((websocket-send (websocket frame) (push frame sent-frames))
(websocket-openp (websocket) t)
(kill-buffer (buffer))
(delete-process (proc) (add-to-list 'processes-deleted proc)))
(websocket-close (websocket-inner-create
:conn "fake-conn"
:url t
:accept-string t
:on-close 'identity))
(should (equal sent-frames (list
(make-websocket-frame :opcode 'close
:completep t))))
(should (equal processes-deleted '("fake-conn"))))))
(ert-deftest websocket-outer-filter ()
(let* ((fake-ws (websocket-inner-create
:conn t :url t :accept-string t
:on-open (lambda (websocket)
(should (eq (websocket-ready-state websocket)
'open))
(setq open-callback-called t)
(error "Ignore me!"))
:on-error (lambda (ws type err))))
(processed-frames)
(frame1 (make-websocket-frame :opcode 'text :payload "foo" :completep t
:length 9))
(frame2 (make-websocket-frame :opcode 'text :payload "bar" :completep t
:length 9))
(open-callback-called)
(websocket-frames
(concat
(websocket-encode-frame frame1 t)
(websocket-encode-frame frame2 t))))
(flet ((websocket-process-frame
(websocket frame)
(lexical-let ((frame frame))
(lambda () (push frame processed-frames))))
(websocket-verify-headers (websocket output) t)
(websocket-close (websocket)))
(websocket-outer-filter fake-ws "HTTP/1.1 101 Switching Protocols\r\n")
(websocket-outer-filter fake-ws "Sec-")
(should (eq (websocket-ready-state fake-ws) 'connecting))
(should-not open-callback-called)
(websocket-outer-filter fake-ws "WebSocket-Accept: acceptstring")
(should-not open-callback-called)
(websocket-outer-filter fake-ws (concat
"\r\n\r\n"
(substring websocket-frames 0 2)))
(should open-callback-called)
(websocket-outer-filter fake-ws (substring websocket-frames 2))
(should (equal (list frame2 frame1) processed-frames))
(should-not (websocket-inflight-input fake-ws)))
(flet ((websocket-close (websocket)))
(setf (websocket-ready-state fake-ws) 'connecting)
(should (eq 500 (cdr (should-error
(websocket-outer-filter fake-ws "HTTP/1.1 500\r\n\r\n")
:type 'websocket-received-error-http-response)))))))
(ert-deftest websocket-outer-filter-bad-connection ()
(let* ((on-open-calledp)
(websocket-closed-calledp)
(fake-ws (websocket-inner-create
:conn t :url t :accept-string t
:on-open (lambda (websocket)
(setq on-open-calledp t)))))
(flet ((websocket-verify-response-code (output) t)
(websocket-verify-headers (websocket output) (error "Bad headers!"))
(websocket-close (websocket) (setq websocket-closed-calledp t)))
(condition-case err
(progn (websocket-outer-filter fake-ws "HTTP/1.1 101\r\n\r\n")
(error "Should have thrown an error!"))
(error
(should-not on-open-calledp)
(should websocket-closed-calledp))))))
(ert-deftest websocket-outer-filter-fragmented-header ()
(let* ((on-open-calledp)
(websocket-closed-calledp)
(fake-ws (websocket-inner-create
:protocols '("websocket")
:conn t :url t :accept-string "17hG/VoPPd14L9xPSI7LtEr7PQc="
:on-open (lambda (websocket)
(setq on-open-calledp t)))))
(flet ((websocket-close (websocket)))
(websocket-outer-filter fake-ws "HTTP/1.1 101 Web Socket Protocol Handsh")
(websocket-outer-filter fake-ws "ake\r\nConnection: Upgrade\r\n")
(websocket-outer-filter fake-ws "Upgrade: websocket\r\n")
(websocket-outer-filter fake-ws "Sec-websocket-Protocol: websocket\r\n")
(websocket-outer-filter fake-ws "Sec-WebSocket-Accept: 17hG/VoPPd14L9xPSI7LtEr7PQc=\r\n\r\n"))))
(ert-deftest websocket-send-text ()
(flet ((websocket-send (ws frame)
(should (equal
(websocket-frame-payload frame)
"\344\275\240\345\245\275"))))
(websocket-send-text nil "你好")))
(ert-deftest websocket-send ()
(let ((ws (websocket-inner-create :conn t :url t :accept-string t)))
(flet ((websocket-ensure-connected (websocket))
(websocket-openp (websocket) t)
(process-send-string (conn string)))
;; Just make sure there is no error.
(websocket-send ws (make-websocket-frame :opcode 'ping
:completep t)))
(should-error (websocket-send ws
(make-websocket-frame :opcode 'text)))
(should-error (websocket-send ws
(make-websocket-frame :opcode 'close
:payload "bye!"
:completep t))
:type 'websocket-illegal-frame)
(should-error (websocket-send ws
(make-websocket-frame :opcode :close))
:type 'websocket-illegal-frame)))
(ert-deftest websocket-verify-client-headers ()
(let* ((http "HTTP/1.1")
(host "Host: authority")
(upgrade "Upgrade: websocket")
(key (format "Sec-Websocket-Key: %s" "key"))
(version "Sec-Websocket-Version: 13")
(protocol "Sec-Websocket-Protocol: protocol")
(extensions1 "Sec-Websocket-Extensions: foo")
(extensions2 "Sec-Websocket-Extensions: bar; baz=2")
(all-required-headers (list host upgrade key version)))
;; Test that all these headers are necessary
(should (equal
'(:key "key" :protocols ("protocol") :extensions ("foo" "bar; baz=2"))
(websocket-verify-client-headers
(mapconcat 'identity (append (list http "" protocol extensions1 extensions2)
all-required-headers) "\r\n"))))
(should (websocket-verify-client-headers
(mapconcat 'identity
(mapcar 'upcase
(append (list http "" protocol extensions1 extensions2)
all-required-headers)) "\r\n")))
(dolist (header all-required-headers)
(should-not (websocket-verify-client-headers
(mapconcat 'identity (append (list http "")
(remove header all-required-headers))
"\r\n"))))
(should-not (websocket-verify-client-headers
(mapconcat 'identity (append (list "HTTP/1.0" "") all-required-headers)
"\r\n")))))
(ert-deftest websocket-intersect ()
(should (equal '(2) (websocket-intersect '(1 2) '(2 3))))
(should (equal nil (websocket-intersect '(1 2) '(3 4))))
(should (equal '(1 2) (websocket-intersect '(1 2) '(1 2)))))
(ert-deftest websocket-get-server-response ()
(let ((ws (websocket-inner-create :conn t :url t :accept-string "key"
:protocols '("spa" "spb")
:extensions '("sea" "seb"))))
(should (equal (concat
"HTTP/1.1 101 Switching Protocols\r\n"
"Upgrade: websocket\r\n"
"Connection: Upgrade\r\n"
"Sec-WebSocket-Accept: key\r\n\r\n")
(websocket-get-server-response ws nil nil)))
(should (string-match "Sec-Websocket-Protocol: spb\r\n"
(websocket-get-server-response ws '("spb" "spc") nil)))
(should-not (string-match "Sec-Websocket-Protocol:"
(websocket-get-server-response ws '("spc") nil)))
(let ((output (websocket-get-server-response ws '("spa" "spb") nil)))
(should (string-match "Sec-Websocket-Protocol: spa\r\n" output))
(should (string-match "Sec-Websocket-Protocol: spb\r\n" output)))
(should (string-match "Sec-Websocket-Extensions: sea"
(websocket-get-server-response ws nil '("sea" "sec"))))
(should-not (string-match "Sec-Websocket-Extensions:"
(websocket-get-server-response ws nil '("sec"))))
(let ((output (websocket-get-server-response ws nil '("sea" "seb"))))
(should (string-match "Sec-Websocket-Extensions: sea\r\n" output))
(should (string-match "Sec-Websocket-Extensions: seb\r\n" output)))))
(ert-deftest websocket-server-filter ()
(let ((on-open-called)
(ws (websocket-inner-create :conn t :url t :accept-string "key"
:on-open (lambda (ws) (setq on-open-called t))))
(closed)
(response)
(processed))
(flet ((process-send-string (p text) (setq response text))
(websocket-close (ws) (setq closed t))
(process-get (process sym) ws))
;; Bad request, in two parts
(flet ((websocket-verify-client-headers (text) nil))
(websocket-server-filter nil "HTTP/1.0 GET /foo \r\n")
(should-not closed)
(websocket-server-filter nil "\r\n")
(should (equal response "HTTP/1.1 400 Bad Request\r\n\r\n"))
(should-not (websocket-inflight-input ws)))
;; Good request, followed by packet
(setq closed nil
response nil)
(setf (websocket-inflight-input ws) nil)
(flet ((websocket-verify-client-headers (text) t)
(websocket-get-server-response (ws protocols extensions)
"response")
(websocket-process-input-on-open-ws (ws text)
(setq processed t)
(should
(equal text websocket-test-hello))))
(websocket-server-filter nil
(concat "\r\n\r\n" websocket-test-hello))
(should (equal (websocket-ready-state ws) 'open))
(should-not closed)
(should (equal response "response"))
(should processed)))))
(ert-deftest websocket-complete-server-response-test ()
;; Example taken from RFC
(should (equal
(concat "HTTP/1.1 101 Switching Protocols\r\n"
"Upgrade: websocket\r\n"
"Connection: Upgrade\r\n"
"Sec-WebSocket-Accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo=\r\n"
"Sec-WebSocket-Protocol: chat\r\n\r\n"
)
(let ((header-info
(websocket-verify-client-headers
(concat "GET /chat HTTP/1.1\r\n"
"Host: server.example.com\r\n"
"Upgrade: websocket\r\n"
"Connection: Upgrade\r\n"
"Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\n"
"Sec-WebSocket-Protocol: chat, superchat\r\n"
"Sec-WebSocket-Version: 13\r\n"))))
(should header-info)
(let ((ws (websocket-inner-create
:conn t :url t
:accept-string (websocket-calculate-accept
(plist-get header-info :key))
:protocols '("chat"))))
(websocket-get-server-response
ws
(plist-get header-info :protocols)
(plist-get header-info :extension)))))))
(ert-deftest websocket-server-close ()
(let ((websocket-server-websockets
(list (websocket-inner-create :conn 'conn-a :url t :accept-string t
:server-conn 'a
:ready-state 'open)
(websocket-inner-create :conn 'conn-b :url t :accept-string t
:server-conn 'b
:ready-state 'open)
(websocket-inner-create :conn 'conn-c :url t :accept-string t
:server-conn 'b
:ready-state 'closed)))
(deleted-processes)
(closed-websockets))
(flet ((delete-process (conn) (add-to-list 'deleted-processes conn))
(websocket-close (ws)
;; we always remove on closing in the
;; actual code.
(setq websocket-server-websockets
(remove ws websocket-server-websockets))
(should-not (eq (websocket-ready-state ws) 'closed))
(add-to-list 'closed-websockets ws)))
(websocket-server-close 'b))
(should (equal deleted-processes '(b)))
(should (eq 1 (length closed-websockets)))
(should (eq 'conn-b (websocket-conn (car closed-websockets))))
(should (eq 1 (length websocket-server-websockets)))
(should (eq 'conn-a (websocket-conn (car websocket-server-websockets))))))
(ert-deftest websocket-default-error-handler ()
(flet ((try-error
(callback-type err expected-message)
(flet ((display-warning
(type message &optional level buffer-name)
(should (eq type 'websocket))
(should (eq level :error))
(should (string= message expected-message))))
(websocket-default-error-handler nil
callback-type
err))))
(try-error
'on-message
'(end-of-buffer)
"in callback `on-message': End of buffer")
(try-error
'on-close
'(wrong-number-of-arguments 1 2)
"in callback `on-close': Wrong number of arguments: 1, 2")))

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