Unsupported WebSocket version: ""
   [Condition of type SIMPLE-ERROR]

Restarts:
 0: [ABORT] abort thread (#<THREAD "hunchentoot-worker-127.0.0.1:58768" RUNNING {100197F713}>)

Backtrace:
  0: ((:METHOD INITIALIZE-INSTANCE :AFTER (WEBSOCKET-DRIVER.WS.SERVER:SERVER)) #<WEBSOCKET-DRIVER.WS.SERVER:SERVER {1007E68323}>) [fast-method]
      Locals:
        WEBSOCKET-DRIVER.WS.SERVER:SERVER = #<WEBSOCKET-DRIVER.WS.SERVER:SERVER {1007E68323}>
  1: ((SB-PCL::EMF INITIALIZE-INSTANCE) #<unused argument> #<unused argument> #<WEBSOCKET-DRIVER.WS.SERVER:SERVER {1007E68323}> :SOCKET #<CLACK.HANDLER.HUNCHENTOOT::CLIENT {1007E67823}> :HEADERS { ..)
      Locals:
        SB-PCL::.ARG0. = #<WEBSOCKET-DRIVER.WS.SERVER:SERVER {1007E68323}>
        SB-DEBUG::MORE = (:SOCKET #<CLACK.HANDLER.HUNCHENTOOT::CLIENT {1007E67823}> :HEADERS { ..)
  2: ((:METHOD MAKE-INSTANCE (CLASS)) #<STANDARD-CLASS WEBSOCKET-DRIVER.WS.SERVER:SERVER> :SOCKET #<CLACK.HANDLER.HUNCHENTOOT::CLIENT {1007E67823}> :HEADERS { ..) [fast-method]
      Locals:
        CLASS = #<STANDARD-CLASS WEBSOCKET-DRIVER.WS.SERVER:SERVER>
        SB-PCL::INITARGS = (:SOCKET #<CLACK.HANDLER.HUNCHENTOOT::CLIENT {1007E67823}> :HEADERS { ..)
  3: ((LAMBDA (INDEX::ENV) :IN "/home/prlosh/common-lisp/wo/index.lisp") (:REQUEST-METHOD :GET :SCRIPT-NAME "" :PATH-INFO "/" ...))
      Locals:
        INDEX::ENV = (:REQUEST-METHOD :GET :SCRIPT-NAME "" :PATH-INFO "/" ...)
  4: ((LAMBDA (LACK.MIDDLEWARE.BACKTRACE::ENV) :IN "/home/prlosh/quicklisp/dists/quicklisp/software/lack-20170830-git/src/middleware/backtrace.lisp") (:REQUEST-METHOD :GET :SCRIPT-NAME "" :PATH-INFO "/" ....
      Locals:
        LACK.MIDDLEWARE.BACKTRACE::ENV = (:REQUEST-METHOD :GET :SCRIPT-NAME "" :PATH-INFO "/" ...)
  5: ((:METHOD HUNCHENTOOT:ACCEPTOR-DISPATCH-REQUEST (CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR T)) #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)> #<HUNCHENTOOT:REQUEST {1007E5F593}>) [fa..
      Locals:
        HUNCHENTOOT:ACCEPTOR = #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)>
        CLACK.HANDLER.HUNCHENTOOT::REQ = #<HUNCHENTOOT:REQUEST {1007E5F593}>
  6: ((:METHOD HUNCHENTOOT:HANDLE-REQUEST (HUNCHENTOOT:ACCEPTOR HUNCHENTOOT:REQUEST)) #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)> #<HUNCHENTOOT:REQUEST {1007E5F593}>) [fast-method]
      Locals:
        HUNCHENTOOT:*ACCEPTOR* = #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)>
        HUNCHENTOOT:*REQUEST* = #<HUNCHENTOOT:REQUEST {1007E5F593}>
  7: ((:METHOD HUNCHENTOOT:PROCESS-REQUEST (T)) #<HUNCHENTOOT:REQUEST {1007E5F593}>) [fast-method]
      Locals:
        HUNCHENTOOT:REQUEST = #<HUNCHENTOOT:REQUEST {1007E5F593}>
      Catch-tags:
        HUNCHENTOOT::HANDLER-DONE
        HUNCHENTOOT::REQUEST-PROCESSED
  8: (HUNCHENTOOT::DO-WITH-ACCEPTOR-REQUEST-COUNT-INCREMENTED #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)> #<CLOSURE (LAMBDA NIL :IN HUNCHENTOOT:PROCESS-CONNECTION) {1007E5E92B}>)
      Locals:
        HUNCHENTOOT:*ACCEPTOR* = #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)>
        FUNCTION = #<CLOSURE (LAMBDA () :IN HUNCHENTOOT:PROCESS-CONNECTION) {1007E5E92B}>
  9: ((:METHOD HUNCHENTOOT:PROCESS-CONNECTION (HUNCHENTOOT:ACCEPTOR T)) #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)> #<USOCKET:STREAM-USOCKET {100197DBD3}>) [fast-method]
      Locals:
        HUNCHENTOOT:*ACCEPTOR* = #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)>
        HUNCHENTOOT::SOCKET = #<USOCKET:STREAM-USOCKET {100197DBD3}>
        HUNCHENTOOT::SOCKET-STREAM = #<SB-SYS:FD-STREAM for "socket 127.0.0.1:8080, peer: 127.0.0.1:58768" {1001979A13}>
 10: ((:METHOD HUNCHENTOOT:PROCESS-CONNECTION :AROUND (HUNCHENTOOT:ACCEPTOR T)) #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)> #<USOCKET:STREAM-USOCKET {100197DBD3}>) [fast-method]
      Locals:
        HUNCHENTOOT:*ACCEPTOR* = #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)>
        SB-PCL::.NEXT-METHOD-CALL. = #S(SB-PCL::FAST-METHOD-CALL :FUNCTION #<FUNCTION (SB-PCL::FAST-METHOD HUNCHENTOOT:PROCESS-CONNECTION (HUNCHENTOOT:ACCEPTOR T))> :PV NIL :NEXT-METHOD-CALL NIL :ARG-INFO (2))
        HUNCHENTOOT::SOCKET = #<USOCKET:STREAM-USOCKET {100197DBD3}>
 11: ((:METHOD HUNCHENTOOT:PROCESS-CONNECTION :AROUND (CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR T)) #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)> #<USOCKET:STREAM-USOCKET {100197DBD3}>)..
      Locals:
        SB-PCL::.NEXT-METHOD-CALL. = #S(SB-PCL::FAST-METHOD-CALL ..)
        HUNCHENTOOT:ACCEPTOR = #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)>
        CLACK.HANDLER.HUNCHENTOOT::SOCKET = #<USOCKET:STREAM-USOCKET {100197DBD3}>
 12: ((FLET HUNCHENTOOT::PROCESS-CONNECTION% :IN HUNCHENTOOT::HANDLE-INCOMING-CONNECTION%) #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)> #<USOCKET:STREAM-USOCKET {100197DBD3}>)
      Locals:
        HUNCHENTOOT:ACCEPTOR = #<CLACK.HANDLER.HUNCHENTOOT::CLACK-ACCEPTOR (host *, port 8080)>
        HUNCHENTOOT::SOCKET = #<USOCKET:STREAM-USOCKET {100197DBD3}>
        HUNCHENTOOT:TASKMASTER = #<HUNCHENTOOT:ONE-THREAD-PER-CONNECTION-TASKMASTER {10079C4A83}>
 13: ((LAMBDA NIL :IN BORDEAUX-THREADS::BINDING-DEFAULT-SPECIALS))
      [No Locals]
 14: ((FLET "WITHOUT-INTERRUPTS-BODY-4" :IN SB-THREAD::INITIAL-THREAD-FUNCTION-TRAMPOLINE))
      Locals:
        SB-THREAD:THREAD = #<SB-THREAD:THREAD "hunchentoot-worker-127.0.0.1:58768" RUNNING {100197F713}>
      Catch-tags:
        SB-THREAD::%RETURN-FROM-THREAD
 15: ((FLET SB-THREAD::WITH-MUTEX-THUNK :IN SB-THREAD::INITIAL-THREAD-FUNCTION-TRAMPOLINE))
      [No Locals]
      Catch-tags:
        SB-THREAD::%ABORT-THREAD
        SB-IMPL::%END-OF-THE-WORLD
        SB-INT:TOPLEVEL-CATCHER
 16: ((FLET "WITHOUT-INTERRUPTS-BODY-1" :IN SB-THREAD::CALL-WITH-MUTEX))
      Locals:
        GOT-IT = T
        MUTEX = #<SB-THREAD:MUTEX "thread result lock" owner: #<SB-THREAD:THREAD "hunchentoot-worker-127.0.0.1:58768" RUNNING {100197F713}>>
 17: (SB-THREAD::CALL-WITH-MUTEX #<CLOSURE (FLET SB-THREAD::WITH-MUTEX-THUNK :IN SB-THREAD::INITIAL-THREAD-FUNCTION-TRAMPOLINE) {7FFFEF0BECDB}> #<SB-THREAD:MUTEX "thread result lock" owner: #<SB-THREAD:THR..
      Locals:
        FUNCTION = #<CLOSURE (FLET SB-THREAD::WITH-MUTEX-THUNK :IN SB-THREAD::INITIAL-THREAD-FUNCTION-TRAMPOLINE) {7FFFEF0BECDB}>
        SB-THREAD::GOT-IT = T
        SB-THREAD:MUTEX = #<SB-THREAD:MUTEX "thread result lock" owner: #<SB-THREAD:THREAD "hunchentoot-worker-127.0.0.1:58768" RUNNING {100197F713}>>
        SB-THREAD::TIMEOUT = NIL
        SB-THREAD::VALUE = NIL
        SB-THREAD::WAITP = T
 18: (SB-THREAD::INITIAL-THREAD-FUNCTION-TRAMPOLINE #<SB-THREAD:THREAD "hunchentoot-worker-127.0.0.1:58768" RUNNING {100197F713}> NIL #<CLOSURE (LAMBDA NIL :IN BORDEAUX-THREADS::BINDING-DEFAULT-SPECIALS) {..
      Locals:
        SB-THREAD::ARG1 = NIL
        SB-THREAD::ARG2 = NIL
        SB-THREAD::ARG3 = NIL
        SB-THREAD::ARGUMENTS = NIL
        SB-THREAD::REAL-FUNCTION = #<CLOSURE (LAMBDA () :IN BORDEAUX-THREADS::BINDING-DEFAULT-SPECIALS) {100197F6BB}>
        SB-THREAD::SETUP-SEM = NIL
        SB-THREAD:THREAD = #<SB-THREAD:THREAD "hunchentoot-worker-127.0.0.1:58768" RUNNING {100197F713}>
        SB-THREAD::THREAD-LIST = (#<SB-THREAD:THREAD "hunchentoot-worker-127.0.0.1:58768" RUNNING {100197F713}> #<SB-THREAD:THREAD "hunchentoot-listener-*:5000" RUNNING {1007E4ACD3}> ..)
 19: ("foreign function: call_into_lisp")
      [No Locals]
 20: ("foreign function: new_thread_trampoline")
      [No Locals]