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gnus + gnutls: gnutls.c: [1] (Emacs) fatal error: An unexpected TLS packet was received.

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Does anyone know how to debug this TLS error further?  Do you have
TLS working with news.eternal-september.org or similar news server?

I'm trying to use news.eternal-september.org with gnus TLS.  So far,
nttp authentication works, however when using the nttps port and
(nntp-open-connection-function nntp-open-tls-stream) I get the following
errors.  I can invoke "gnutls-cli news.eternal-september.org -p 563" and
the connection appears established as TLS.

Error: gnutls.c: [audit] Received record packet of unknown type 50
gnutls.c: [1] (Emacs) fatal error: An unexpected TLS packet was
received.

[...]

gnutls.c: [1] (Emacs) connecting to host: news.eternal-september.org
gnutls.c: [1] (Emacs) allocating credentials gnutls.c: [2] (Emacs)
allocating x509 credentials gnutls.c: [2] (Emacs) using default
verification flags gnutls.c: [1] (Emacs) setting the trustfile:
/etc/ssl/cert.pem gnutls.c: [1] (Emacs) gnutls callbacks gnutls.c: [1]
(Emacs) gnutls_init gnutls.c: [1] (Emacs) got non-default priority
string: NORMAL:%DUMBFW gnutls.c: [1] (Emacs) setting the priority string
gnutls.c: [2] added 6 protocols, 29 ciphersuites, 19 sig algos and 10
groups into priority list

gnutls.c: [2] Keeping ciphersuite 13.02 (GNUTLS_AES_256_GCM_SHA384)

gnutls.c: [2] Keeping ciphersuite 13.03
(GNUTLS_CHACHA20_POLY1305_SHA256)

gnutls.c: [2] Keeping ciphersuite 13.01 (GNUTLS_AES_128_GCM_SHA256)

gnutls.c: [2] Keeping ciphersuite 13.04 (GNUTLS_AES_128_CCM_SHA256)

gnutls.c: [2] Keeping ciphersuite c0.2c
(GNUTLS_ECDHE_ECDSA_AES_256_GCM_SHA384)

gnutls.c: [2] Keeping ciphersuite cc.a9
(GNUTLS_ECDHE_ECDSA_CHACHA20_POLY1305)

gnutls.c: [2] Keeping ciphersuite c0.ad (GNUTLS_ECDHE_ECDSA_AES_256_CCM)

gnutls.c: [2] Keeping ciphersuite c0.0a
(GNUTLS_ECDHE_ECDSA_AES_256_CBC_SHA1)

gnutls.c: [2] Keeping ciphersuite c0.2b
(GNUTLS_ECDHE_ECDSA_AES_128_GCM_SHA256)

gnutls.c: [2] Keeping ciphersuite c0.ac (GNUTLS_ECDHE_ECDSA_AES_128_CCM)

gnutls.c: [2] Keeping ciphersuite c0.09
(GNUTLS_ECDHE_ECDSA_AES_128_CBC_SHA1)

gnutls.c: [2] Keeping ciphersuite c0.30
(GNUTLS_ECDHE_RSA_AES_256_GCM_SHA384)

gnutls.c: [2] Keeping ciphersuite cc.a8
(GNUTLS_ECDHE_RSA_CHACHA20_POLY1305)

gnutls.c: [2] Keeping ciphersuite c0.14
(GNUTLS_ECDHE_RSA_AES_256_CBC_SHA1)

gnutls.c: [2] Keeping ciphersuite c0.2f
(GNUTLS_ECDHE_RSA_AES_128_GCM_SHA256)

gnutls.c: [2] Keeping ciphersuite c0.13
(GNUTLS_ECDHE_RSA_AES_128_CBC_SHA1)

gnutls.c: [2] Keeping ciphersuite 00.9d (GNUTLS_RSA_AES_256_GCM_SHA384)

gnutls.c: [2] Keeping ciphersuite c0.9d (GNUTLS_RSA_AES_256_CCM)

gnutls.c: [2] Keeping ciphersuite 00.35 (GNUTLS_RSA_AES_256_CBC_SHA1)

gnutls.c: [2] Keeping ciphersuite 00.9c (GNUTLS_RSA_AES_128_GCM_SHA256)

gnutls.c: [2] Keeping ciphersuite c0.9c (GNUTLS_RSA_AES_128_CCM)

gnutls.c: [2] Keeping ciphersuite 00.2f (GNUTLS_RSA_AES_128_CBC_SHA1)

gnutls.c: [2] Keeping ciphersuite 00.9f
(GNUTLS_DHE_RSA_AES_256_GCM_SHA384)

gnutls.c: [2] Keeping ciphersuite cc.aa
(GNUTLS_DHE_RSA_CHACHA20_POLY1305)

gnutls.c: [2] Keeping ciphersuite c0.9f (GNUTLS_DHE_RSA_AES_256_CCM)

gnutls.c: [2] Keeping ciphersuite 00.39
(GNUTLS_DHE_RSA_AES_256_CBC_SHA1)

gnutls.c: [2] Keeping ciphersuite 00.9e
(GNUTLS_DHE_RSA_AES_128_GCM_SHA256)

gnutls.c: [2] Keeping ciphersuite c0.9e (GNUTLS_DHE_RSA_AES_128_CCM)

gnutls.c: [2] Keeping ciphersuite 00.33
(GNUTLS_DHE_RSA_AES_128_CBC_SHA1)

gnutls.c: [2] Advertizing version 3.4

gnutls.c: [2] Advertizing version 3.3

gnutls.c: [2] Advertizing version 3.2

gnutls.c: [2] Advertizing version 3.1

gnutls.c: [2] HSK[0x7fd47d746600]: sent server name:
'news.eternal-september.org'

gnutls.c: [1] (Emacs) non-fatal error: Resource temporarily unavailable,
try again. [80 times] gnutls.c: [audit] Received record packet of
unknown type 50

gnutls.c: [1] (Emacs) fatal error: An unexpected TLS packet was
received.  gnutls.el: (err=[-15] An unexpected TLS packet was received.)
boot: (:priority NORMAL:%DUMBFW :hostname news.eternal-september.org
:loglevel 2 :min-prime-bits nil :trustfiles (/etc/ssl/cert.pem)
:crlfiles nil :keylist nil :verify-flags nil :verify-error nil :pass nil
:flags nil :callbacks nil) >>> (gnutls-error nntpd -15) nntp
(username@news.eternal-september.org) open error: ‘>>> (gnutls-error
nntpd -15)’.  Continue? (y or n) n Couldn’t open server on
username@news.eternal-september.org Mark set [2 times]

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gnus + gnutls: gnutls.c: [1] (Emacs) fatal error: An unexpected TLS packet was received. NotAorB <atod101101@gmail.com> - 2025-05-13 00:55 -0400

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