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download: 'tls-wrap' treats premature TLS termination as EOF.

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This is a backport of Guile commit
076276c4f580368b4106316a77752d69c8f1494a.

* guix/build/download.scm (tls-wrap)[read!]: Wrap 'get-bytevector-n!'
call in 'catch' and handle 'error/premature-termination' GnuTLS errors.
This commit is contained in:
Ludovic Courtès 2021-03-19 14:23:57 +01:00
parent 1ab03fb745
commit 43937666ba
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GPG key ID: 090B11993D9AEBB5
1 changed files with 16 additions and 4 deletions
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20
guix/build/download.scm
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@ -305,10 +305,22 @@ (define (log level str)
(let ((record (session-record-port session)))
(define (read! bv start count)
(let ((read (get-bytevector-n! record bv start count)))
(if (eof-object? read)
0
read)))
(define read
(catch 'gnutls-error
(lambda ()
(get-bytevector-n! record bv start count))
(lambda (key err proc . rest)
;; When responding to "Connection: close" requests, some
;; servers close the connection abruptly after sending the
;; response body, without doing a proper TLS connection
;; termination. Treat it as EOF.
(if (eq? err error/premature-termination)
the-eof-object
(apply throw key err proc rest)))))
(if (eof-object? read)
0
read))
(define (write! bv start count)
(put-bytevector record bv start count)
(force-output record)