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68 lines
1.2 KiB
Groff
68 lines
1.2 KiB
Groff
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.\" Generated by Mmark Markdown Processer - mmark.miek.nl
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.TH "COREDNS-HTTPS3" 7 "March 2026" "CoreDNS" "CoreDNS Plugins"
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.SH "NAME"
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.PP
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\fIhttps3\fP - configures DNS-over-HTTPS/3 (DoH3) server options.
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.SH "DESCRIPTION"
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.PP
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The \fIhttps3\fP plugin allows you to configure parameters for the DNS-over-HTTPS/3 (DoH3) server to fine-tune the security posture and performance of the server. HTTPS/3 uses QUIC as the underlying transport.
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.PP
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This plugin can only be used once per HTTPS3 listener block.
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.SH "SYNTAX"
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.PP
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.RS
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.nf
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https3 {
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max\_streams POSITIVE\_INTEGER
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}
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.fi
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.RE
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.IP \(bu 4
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\fB\fCmax_streams\fR limits the number of concurrent QUIC streams per connection. This helps prevent unbounded streams on a single connection, exhausting server resources. The default value is 256 if not specified. Set to 0 to use underlying QUIC transport default.
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.SH "EXAMPLES"
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.PP
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Set custom limits for maximum streams:
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.PP
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.RS
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.nf
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https3://.:443 {
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tls cert.pem key.pem
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https3 {
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max\_streams 50
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}
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whoami
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}
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.fi
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.RE
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.PP
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Set values to 0 for QUIC transport default, matching CoreDNS behaviour before v1.14.0:
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.PP
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.RS
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.nf
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https3://.:443 {
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tls cert.pem key.pem
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https3 {
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max\_streams 0
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}
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whoami
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}
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.fi
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.RE
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