{"Entry":{"collection":"conn","key":"sslsni","name":"sslsni","aliases":["PGSSLSNI","sslsni"],"metadata":{"aliases":["PGSSLSNI","sslsni"],"category":"TLS","content_hash":"ac72f88970380f6396be738e486815eaef278fd83533e270b828134cee6b1e77","derived_content_hash":"a9e3f6854e1c9617a690b5ad9b84e4d522fcb2e04126d61b554e6e0b6b1c57ac","documentation_refresh":{"batch":"20261113","original_source_rev":"","versions":{"14":"14.25","15":"15.20","16":"16.16","17":"17.12","18":"18.7","19":"19rc2"}},"imported_at":"2026-09-30T00:40:35.183027+08:00","name":"sslsni","name_zh":"","slug":"sslsni","summary":"If set to 1 (default), libpq sets the TLS extension “ Server Name Indication ” ( SNI ) on SSL-enabled connections. 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By setting this parameter to 0, this is turned off."],"manual_html":"\u003cdiv\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt id=\"LIBPQ-CONNECT-SSLSNI\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003esslsni\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\n\u003cp\u003eIf set to 1 (default), libpq sets the TLS extension \u003cspan class=\"quote\"\u003e“\u003cspan class=\"quote\"\u003eServer Name Indication\u003c/span\u003e”\u003c/span\u003e (SNI) on SSL-enabled connections. By setting this parameter to 0, this is turned off.\u003c/p\u003e\n\u003cp\u003eThe Server Name Indication can be used by SSL-aware proxies to route connections without having to decrypt the SSL stream. (Note that unless the proxy is aware of the PostgreSQL protocol handshake this would require setting \u003ccode class=\"literal\"\u003esslnegotiation\u003c/code\u003e to \u003ccode class=\"literal\"\u003edirect\u003c/code\u003e.) 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