feat: Sanitize illegal XML characters from outgoing messages#2116
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feat: Sanitize illegal XML characters from outgoing messages#2116
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sjaeckel
requested changes
Mar 19, 2026
Filter out control characters (U+0000 to U+001F) from outgoing messages, as they are illegal in XML 1.0 (except for \t, \n, and \r). This prevents XMPP servers from closing the connection when such characters are accidentally or intentionally included in a message. Fixes: #1437
sjaeckel
approved these changes
Mar 19, 2026
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Filter out control characters (U+0000 to U+001F) from outgoing messages, as they are illegal in XML 1.0 (except for \t, \n, and \r). This prevents XMPP servers from closing the connection when such characters are accidentally or intentionally included in a message.
Fixes: #1437