drakma-devel May 2008

drakma-devel@common-lisp.net

5 participants
5 discussions

[drakma-devel] http-request returns nil
by Andrei Stebakov 30 May '08

30 May '08

I am using http-request to upload files on some web-site. The problem is that sometimes the function returns a nil response so I just have to repeat it again with the same parameters. Sometimes it take up to 8 retries to make the request return a non-nil response. I wonder if you saw it before or how can I debug it? The function doesn't take long to return with nil result. I mean the whole file upload can take 10 seconds, so the http-request may return nil within those 10 seconds. Is some timeout or the connection gets broken between the hosts? There is no exception raised as well, it just silently returns nil. Thank you, Andrew

3 7

[drakma-devel] Current development
by Edi Weitz 26 May '08

26 May '08

As common-lisp.net has been pretty unreliable in the last days, we've moved development over to the bknr.net server maintained by Hans. If you're interested in trying out the soon-to-be-released Hunchentoot version, get all of Hunchentoot, Chunga, and FLEXI-STREAMS from here: http://bknr.net/trac/browser/trunk/thirdparty If you're using Drakma, you'll have to grab it from bknr.net as well, as there are incompatible changes in Chunga. The previous development history can be seen at http://trac.common-lisp.net/tbnl/browser/branches whenever the server is up. Edi.

1 0

[drakma-devel] New Chunga release 0.4.3
by Edi Weitz 23 May '08

23 May '08

ChangeLog: Version 0.4.3 2008-05-23 Cleanup, reduce some consing Download: http://weitz.de/files/chunga.tar.gz

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[drakma-devel] HTTPS through proxy
by Dave Lambert 20 May '08

20 May '08

Hi, I need to contact HTTPS servers through a proxy. I've managed to get this to work by having the http-request function issue an HTTP CONNECT commmand in order to tunnel SSL through the proxy: the patch is below (against 0.11.5). On the downside, it only works for Lispworks. Cheers, Dave --- a/request.lisp +++ b/request.lisp @@ -416,7 +416,8 @@ LispWorks 5.0 or higher." (t (setq content (alist-to-url-encoded-string parameters external-format-out) content-type "application/x-www-form-urlencoded"))))) - (let (http-stream must-close done) + (let ((proxying-https? (and proxy (eq :https (puri:uri-scheme uri)))) + http-stream raw-http-stream must-close done) (unwind-protect (progn (let ((host (or (and proxy (first proxy)) @@ -424,8 +425,8 @@ LispWorks 5.0 or higher." (port (cond (proxy (second proxy)) ((uri-port uri)) (t (default-port uri)))) - (use-ssl (or force-ssl - (eq (uri-scheme uri) :https)))) + (use-ssl (and (not proxying-https?) + (or force-ssl (eq (uri-scheme uri) :https))))) #+(and :lispworks5.0 :mswindows (not :lw-does-not-have-write-timeout)) (when use-ssl @@ -445,6 +446,7 @@ LispWorks 5.0 or higher." #-:lispworks (usocket:socket-stream (usocket:socket-connect host port :element-type 'octet)))) + (setq raw-http-stream http-stream) (when (and use-ssl ;; don't attach SSL to existing streams (not stream)) @@ -473,6 +475,24 @@ LispWorks 5.0 or higher." (format http-stream "~?~C~C" fmt args #\Return #\Linefeed)) (write-header (name value-fmt &rest value-args) (write-http-line "~A: ~?" name value-fmt value-args))) + (when proxying-https? + ;; Setup a tunnel through the proxy server to the + ;; final destination. + (write-http-line "CONNECT ~A:~A HTTP/1.1" (puri:uri-host uri) + (or (puri:uri-port uri) 443)) + (write-http-line "Host: ~A:~A" (puri:uri-host uri) + (or (puri:uri-port uri) 443)) + (write-http-line "") + (force-output http-stream) + ;; Check we get a 200 response before proceeding. + (let ((line (read-status-line http-stream *header-stream*))) + (unless (eq (second line) 200) + (error "Unable to establish HTTPS tunnel through proxy."))) + ;; Got a connection. We have to read a blank line, + ;; turn on SSL, and then we can transmit. + (read-line* http-stream) + #+:lispworks + (comm:attach-ssl raw-http-stream :ssl-side :client)) (when (and (not parameters-used-p) parameters) (setf (uri-query uri)

3 3

[drakma-devel] New Chunga release 0.4.2
by Edi Weitz 07 May '08

07 May '08

ChangeLog: Version 0.4.2 2008-05-07 Flush stream when switching chunking off (patch by Hans Hübner) Download: http://weitz.de/files/chunga.tar.gz

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drakma-devel May 2008