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http3: SNI should not be set if host is literal IP address #11827

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vvb2060 opened this issue Sep 10, 2023 · 1 comment
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http3: SNI should not be set if host is literal IP address #11827

vvb2060 opened this issue Sep 10, 2023 · 1 comment
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HTTP/3 h3 or quic related TLS

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@vvb2060
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vvb2060 commented Sep 10, 2023

I did this

curl --http3-only https://1.1.1.1/cdn-cgi/trace

I expected the following

sni=off

curl/libcurl version

curl 8.2.1 (x86_64-w64-mingw32) libcurl/8.2.1 OpenSSL/3.1.2 (Schannel) zlib/1.3 brotli/1.1.0 zstd/1.5.5 WinIDN libssh2/1.11.0 nghttp2/1.56.0 ngtcp2/0.19.1 nghttp3/0.15.0

operating system

windows
@vvb2060
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vvb2060 commented Sep 10, 2023

image

https://www.rfc-editor.org/rfc/rfc6066#section-3

Literal IPv4 and IPv6 addresses are not permitted in "HostName".

@vvb2060 vvb2060 mentioned this issue Sep 10, 2023
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@bagder bagder added TLS HTTP/3 h3 or quic related labels Sep 10, 2023
jay pushed a commit to vvb2060/curl that referenced this issue Sep 11, 2023
@vvb2060 @jay
quic: don't set SNI if hostname is an IP address
b070f33 
RFC 6066 says: Literal IPv4 and IPv6 addresses are not permitted in
"HostName".

We already do this for non-QUIC connections.

Ref: https://www.rfc-editor.org/rfc/rfc6066#section-3

Fixes curl#11827
Closes curl#11828
@jay jay closed this as completed in d5c562c Sep 11, 2023
ptitSeb pushed a commit to wasix-org/curl that referenced this issue Sep 25, 2023
@vvb2060 @ptitSeb
quic: don't set SNI if hostname is an IP address
84cbafe 
We already do this for TLS connections.

RFC 6066 says: Literal IPv4 and IPv6 addresses are not permitted in
"HostName".

Ref: https://www.rfc-editor.org/rfc/rfc6066#section-3

Fixes curl#11827
Closes curl#11828
@brbzull0 brbzull0 mentioned this issue Mar 21, 2024
Merged
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ngtcp2: SNI should not be set if host is literal IP address vvb2060/curl
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@bagder @vvb2060