From jeffrey@cunningham.net Sat Feb 24 12:07:16 2007
From: Jeffrey Cunningham <jeffrey@cunningham.net>
To: drakma-devel@common-lisp.net
Subject: [drakma-devel] Bug handling bad html?
Date: Sat, 24 Feb 2007 09:07:25 -0800
Message-ID: <20070224170725.GA23865@achilles.olympus.net>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============0418561586677134672=="

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Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable

I was playing with drakma and had it drop into the debugger when
retrieving a commercial page. It looks like it might be a bug in
flexi-streams, but I don't know how to isolate the input more
specifically than what came up here:


Unexpected value #xA0 at start of UTF-8 sequence.
   [Condition of type FLEXI-STREAMS:FLEXI-STREAM-ENCODING-ERROR]

Restarts:
 0: [ABORT] Abort SLIME compilation.
 1: [ABORT] Return to SLIME's top level.
 2: [TERMINATE-THREAD] Terminate this thread (#<THREAD "worker" {CDD6631}>)

Backtrace:
  0: (FLEXI-STREAMS::SIGNAL-ENCODING-ERROR
      #<FLEXI-STREAMS::FLEXI-UTF-8-IO-STREAM {12CF8379}>
      "Unexpected value #x~X at start of UTF-8 sequence."
      160)
  1: (FLEXI-STREAMS::SIGNAL-ENCODING-ERROR
      #<FLEXI-STREAMS::FLEXI-UTF-8-IO-STREAM {12CF8379}>
      "Unexpected value #x~X at start of UTF-8 sequence.")
  2: ((FLET #:BODY-FN327))
  3: ((SB-PCL::FAST-METHOD STREAM-READ-CHAR
       (FLEXI-STREAMS::FLEXI-UTF-8-INPUT-STREAM))
      #<unavailable argument>
      #<unavailable argument>
      #<unavailable argument>)
  4: ((SB-PCL::FAST-METHOD TRIVIAL-GRAY-STREAMS:STREAM-READ-SEQUENCE
       (FLEXI-STREAMS:FLEXI-INPUT-STREAM #1=3D"#<...>" . #1#))
      #<unused argument>
      #<unused argument>
      #<unavailable argument>
      #<unavailable argument>
      #<unavailable argument>
      #<unavailable argument>)
  5: (READ-SEQUENCE
      "y make a difference this holiday season. Our gift ideas

     are unique and of high quality.<br/><br/></p>

    =20

     <p><a href=3D\"http://www.1giftidea.com/\" target=3D\"_blank\" title=3D\=
"Christmas Gift Ideas\">Gift ideas for every occasion, Christmas, Birthday, M=
other's day...</a><br/>

     Gift ideas for every occasion, Christmas, Birthday, Mothers day, Graduat=
ion, Fathers day, Anniversary, Wedding, & Baby Shower.<br/><br/></p>

    =20

     <p><a href=3D\"http://www.mixedblessing.com/\" target=3D\"_blank\" title=
=3D\"Mixed Blessing\">Hanukkah card, Christmas gift idea and Holiday greeting=
 cards from MixedBlessing</a><br/>

     Greeting Cards for Interfaith and Multicultures from MixedBlesing. Hanuk=
kah cards, Holiday cards, Christmas Gift Ideas, Holiday Gifts and more.. Find=
 great gifts now!<br/><br/></p>

    =20
 ..)
  6: (DRAKMA::READ-BODY
      #<FLEXI-STREAMS::FLEXI-UTF-8-IO-STREAM {12CF8379}>
      ((:DATE . "Sat, 24 Feb 2007 06:30:03 GMT")
       (:SERVER . "Apache/2.0.46 (Red Hat)")
       (:SET-COOKIE
        . "GS_UUID=3D24.18.193.65.1172298603635841; path=3D/,PHPSESSID=3De009=
a521cb2bf134a00df925e4f4d510; path=3D/,cart_hash=3De009a521cb2bf134a00df925e4=
f4d510; expires=3DTuesday, 27-Feb-07 06:30:03 GMT; path=3D/")
       (:X-POWERED-BY . "PHP/4.4.0")
       (:EXPIRES . "Thu, 19 Nov 1981 08:52:00 GMT")
       (:CACHE-CONTROL
        . "no-store, no-cache, must-revalidate, post-check=3D0, pre-check=3D0=
") ..))
  7: ((LABELS DRAKMA::FINISH-REQUEST) NIL NIL)
  8: (HTTP-REQUEST
      #<URI http://www.gifttree.com/Christmas/Christmas-gift-idea.html>
      :PROXY
      NIL)
  9: (RETRIEVE-URI
      "http://www.gifttree.com/Christmas/Christmas-gift-idea.html"
      NIL)
 10: (WALK-SITE
      "http://www.gifttree.com/Christmas/Christmas-gift-idea.html"
      #<unavailable argument>
      #<unavailable argument>
      #<unavailable argument>
      #<unavailable argument>
      #<unavailable argument>
      #<unavailable argument>)
 11: (SB-FASL::FOP-FUNCALL)
 12: (SB-FASL::LOAD-FASL-GROUP
      #<SB-SYS:FD-STREAM for "file /tmp/fileIQGlqR.fasl" {CDF1089}>)
 13: (SB-FASL::LOAD-AS-FASL
      #<SB-SYS:FD-STREAM for "file /tmp/fileIQGlqR.fasl" {CDF1089}>
      NIL
      #<unavailable argument>)
 14: (SB-FASL::INTERNAL-LOAD
      #P"/tmp/fileIQGlqR.fasl"
      #P"/tmp/fileIQGlqR.fasl"
      :ERROR
      NIL
      NIL
      :BINARY
      NIL)
 15: (SB-FASL::INTERNAL-LOAD
      #P"/tmp/fileIQGlqR.fasl"
      #P"/tmp/fileIQGlqR.fasl"
      :ERROR
      NIL
      NIL
      NIL
      :DEFAULT)
 16: (LOAD #P"/tmp/fileIQGlqR.fasl")
 17: ((LAMBDA (STRING &KEY #1=3D"#<...>" . #1#))
      "(print (walk-site \"http://www.gifttree.com\"))
     "
      :BUFFER
      "seo.lisp"
      :POSITION
      27060
      :DIRECTORY
      #<unused argument>)
 18: ((LAMBDA ()))
 --more--


--Jeff


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