{"Entry":{"collection":"conn","key":"requiressl","name":"requiressl","aliases":["requiressl"],"metadata":{"aliases":["requiressl"],"category":"TLS","content_hash":"2b92f9623308d852962545e68503348b6e5b38db7bfad6a3d303fcbf95ebe256","imported_at":"2026-09-30T00:40:35.063056+08:00","name":"requiressl","name_zh":"","slug":"requiressl","summary":"This option is deprecated in favor of the sslmode setting."}},"Definition":{"Collection":"conn","Key":"requiressl","SourceDatabase":"center","Version":"18","SourceTable":"connection_parameter","SourceKey":"requiressl","SourceRevision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","Facts":{"comparison_data":{"compiled_default_expression":"","default_evidence":["If set to 1, an SSL connection to the server is required (this is equivalent to sslmode require ). libpq will then refuse to connect if the server does not accept an SSL connection. 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This option is only available if PostgreSQL is compiled with SSL support."],"description":["This option is deprecated in favor of the sslmode setting."],"documented":true,"environment":[],"facts":[{"label":"Client library","value":"libpq 18.6"},{"label":"Manual definition","value":"Documented"}],"keyword":"requiressl","manual_html":"\u003cdiv\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt id=\"LIBPQ-CONNECT-REQUIRESSL\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003erequiressl\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\n\u003cp\u003eThis option is deprecated in favor of the \u003ccode class=\"literal\"\u003esslmode\u003c/code\u003e setting.\u003c/p\u003e\n\u003cp\u003eIf set to 1, an SSL connection to the server is required (this is equivalent to \u003ccode class=\"literal\"\u003esslmode\u003c/code\u003e \u003ccode class=\"literal\"\u003erequire\u003c/code\u003e). \u003cspan class=\"application\"\u003elibpq\u003c/span\u003e will then refuse to connect if the server does not accept an SSL connection. 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For example, using the above service file, a connection string service=mydb port=5434 will use host somehost , port 5434 , user admin , and other parameters as set by environment variables or built-in defaults."],"title":"Default resolution and service-file precedence"},{"paragraphs":[],"title":"Environment variable evidence"}],"signature":"requiressl","source_option":{},"sources":[{"anchor":"LIBPQ-CONNECT-REQUIRESSL","file":"libpq-connect.html","label":"18.6 English manual · libpq-connect.html","sha256":"c26a7fc3dcda6066cfe540641ae2690faf3d3c03277f30b4dfc2328ab45c212f","url":"/docs/18/libpq-connect.html#LIBPQ-CONNECT-REQUIRESSL"},{"anchor":"","file":"libpq-envars.html","label":"18.6 English manual · libpq-envars.html","sha256":"d64db73f3d48127bb984a5f775e77b7bcca2ba4bd218333cf24a45fcdd7c4363","url":"/docs/18/libpq-envars.html"},{"anchor":"","file":"libpq-pgservice.html","label":"18.6 English manual · libpq-pgservice.html","sha256":"6035a3f0ee1d0fd80db5bf58834390b884eecd23206659bdf6f07560deea5aa7","url":"/docs/18/libpq-pgservice.html"}],"tables":[]},"ManualEvidence":{"manual_path":"libpq-connect.html#LIBPQ-CONNECT-REQUIRESSL","release":{"channel":"stable","evidence_kind":"English manual and source declarations","label":"18.6","major":"18","manifest":{"index":"index.html","major":"18","pages":1148,"pdf":{"A4":{"built_at":"2026-09-26","bytes":15865106,"pages":3154,"sha256":"19512c405da53f9f7fcf0abba359223aa65f021be025bf3411381918f92e3190","url":"/files/documentation/pdf/18/postgresql-18-A4.pdf"},"US":{"built_at":"2026-09-26","bytes":15748059,"pages":3328,"sha256":"facbe6c229e598b872d3d98bef53308f46e06746006fa4590de9a7de9dd46319","url":"/files/documentation/pdf/18/postgresql-18-US.pdf"}},"release":"18.6","source_mode":"en SGML built with pinned official archive","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","source_url":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","svg_assets":3,"tree":"18"},"ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","source_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sources":[{"anchor":"LIBPQ-CONNECT-REQUIRESSL","file":"libpq-connect.html","label":"18.6 English manual · libpq-connect.html","sha256":"c26a7fc3dcda6066cfe540641ae2690faf3d3c03277f30b4dfc2328ab45c212f","url":"/docs/18/libpq-connect.html#LIBPQ-CONNECT-REQUIRESSL"},{"anchor":"","file":"libpq-envars.html","label":"18.6 English manual · libpq-envars.html","sha256":"d64db73f3d48127bb984a5f775e77b7bcca2ba4bd218333cf24a45fcdd7c4363","url":"/docs/18/libpq-envars.html"},{"anchor":"","file":"libpq-pgservice.html","label":"18.6 English manual · libpq-pgservice.html","sha256":"6035a3f0ee1d0fd80db5bf58834390b884eecd23206659bdf6f07560deea5aa7","url":"/docs/18/libpq-pgservice.html"}]},"MeasuredEvidence":{}},"Text":{"Collection":"conn","Key":"requiressl","SourceDatabase":"center","Version":"18","Locale":"en","Title":"requiressl","Summary":"This option is deprecated in favor of the sslmode setting.","BodyHTML":"\u003cdiv\u003e\u003cdl\u003e\u003cdt id=\"LIBPQ-CONNECT-REQUIRESSL\"\u003e\u003cspan\u003e\u003ccode\u003erequiressl\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\n\u003cp\u003eThis option is deprecated in favor of the \u003ccode\u003esslmode\u003c/code\u003e setting.\u003c/p\u003e\n\u003cp\u003eIf set to 1, an SSL connection to the server is required (this is equivalent to \u003ccode\u003esslmode\u003c/code\u003e \u003ccode\u003erequire\u003c/code\u003e). \u003cspan\u003elibpq\u003c/span\u003e will then refuse to connect if the server does not accept an SSL connection. If set to 0 (default), \u003cspan\u003elibpq\u003c/span\u003e will negotiate the connection type with the server (equivalent to \u003ccode\u003esslmode\u003c/code\u003e \u003ccode\u003eprefer\u003c/code\u003e). This option is only available if \u003cspan\u003ePostgreSQL\u003c/span\u003e is compiled with SSL support.\u003c/p\u003e\n\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","SourceRevision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8","ContentHash":"ab85c7b60fc07d9d1ad683e9ceb8cbe2bdffb39787d397d3236a85b10a7f7e99","Payload":{"description":["This option is deprecated in favor of the sslmode setting."],"manual_html":"\u003cdiv\u003e\u003cdl class=\"variablelist\"\u003e\u003cdt id=\"LIBPQ-CONNECT-REQUIRESSL\"\u003e\u003cspan class=\"term\"\u003e\u003ccode class=\"literal\"\u003erequiressl\u003c/code\u003e\u003c/span\u003e \u003c/dt\u003e\u003cdd\u003e\n\u003cp\u003eThis option is deprecated in favor of the \u003ccode class=\"literal\"\u003esslmode\u003c/code\u003e setting.\u003c/p\u003e\n\u003cp\u003eIf set to 1, an SSL connection to the server is required (this is equivalent to \u003ccode class=\"literal\"\u003esslmode\u003c/code\u003e \u003ccode class=\"literal\"\u003erequire\u003c/code\u003e). \u003cspan class=\"application\"\u003elibpq\u003c/span\u003e will then refuse to connect if the server does not accept an SSL connection. 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These are useful to avoid hard-coding database connection information into simple client applications, for example.","Service names can be defined in either a per-user service file or a system-wide file. If the same service name exists in both the user and the system file, the user file takes precedence. By default, the per-user service file is named ~/.pg_service.conf . On Microsoft Windows, it is named %APPDATA%\\postgresql\\.pg_service.conf (where %APPDATA% refers to the Application Data subdirectory in the user's profile). A different file name can be specified by setting the environment variable PGSERVICEFILE . The system-wide file is named pg_service.conf . By default it is sought in the etc directory of the PostgreSQL installation (use pg_config --sysconfdir to identify this directory precisely). Another directory, but not a different file name, can be specified by setting the environment variable PGSYSCONFDIR .","Connection parameters obtained from a service file are combined with parameters obtained from other sources. A service file setting overrides the corresponding environment variable, and in turn can be overridden by a value given directly in the connection string. For example, using the above service file, a connection string service=mydb port=5434 will use host somehost , port 5434 , user admin , and other parameters as set by environment variables or built-in defaults."],"title":"Default resolution and service-file precedence"},{"paragraphs":[],"title":"Environment variable evidence"}],"tables":[]}},"RequestedLocale":"zh-Hans","Fallback":true,"Versions":["10","11","12","13","14","15","16","17","18","19","20"],"Locales":["en"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}