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http-client: Work around <http://bugs.gnu.org/22273>.

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* guix/http-client.scm (read-header-line): New procedure.  Use it.
This commit is contained in:
Ludovic Courtès 2016-01-06 21:36:15 +01:00
parent dff9141c5e
commit 793a43f409
1 changed files with 21 additions and 1 deletions
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22
guix/http-client.scm
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@ -188,13 +188,33 @@ (define close
(make-custom-binary-input-port "delimited input port" read! #f #f close))
(define (read-header-line port)
"Read an HTTP header line and return it without its final CRLF or LF.
Raise a 'bad-header' exception if the line does not end in CRLF or LF,
or if EOF is reached."
(match (%read-line port)
(((? string? line) . #\newline)
;; '%read-line' does not consider #\return a delimiter; so if it's
;; there, remove it. We are more tolerant than the RFC in that we
;; tolerate LF-only endings.
(if (string-suffix? "\r" line)
(string-drop-right line 1)
line))
((line . _) ;EOF or missing delimiter
((@@ (web http) bad-header) 'read-header-line line))))
(unless (guile-version>? "2.0.11")
;; Guile <= 2.0.9 had a bug whereby 'response-body-port' would read more
;; than what 'content-length' says. See Guile commit 802a25b.
;; Guile <= 2.0.11 had a bug whereby the 'close' method of the response
;; body port would fail with wrong-arg-num. See Guile commit 5a10e41.
(module-set! (resolve-module '(web response))
'make-delimited-input-port make-delimited-input-port)))
'make-delimited-input-port make-delimited-input-port)
;; Guile <= 2.0.11 was affected by <http://bugs.gnu.org/22273>. See Guile
;; commit 4c7732c.
(when (module-variable %web-http 'read-line*)
(module-set! %web-http 'read-line* read-header-line))))
;; XXX: Work around <http://bugs.gnu.org/13095>, present in Guile
;; up to 2.0.7.