{"Entry":{"collection":"conn","key":"requiressl","name":"requiressl","aliases":["requiressl"],"metadata":{"aliases":["requiressl"],"category":"TLS","content_hash":"2b92f9623308d852962545e68503348b6e5b38db7bfad6a3d303fcbf95ebe256","derived_content_hash":"6786141bc01b4e1035317d0f92f319cd842b06a3464bb40b0936bfe4af78663e","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":"2026-09-30T00:40:35.063056+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. If set to 0 (default), libpq will negotiate the connection type with the server (equivalent to sslmode prefer ). This option is only available if PostgreSQL is compiled with SSL support."],"definition":"This option is deprecated in favor of the sslmode setting. 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. If set to 0 (default), libpq will negotiate the connection type with the server (equivalent to sslmode prefer ). This option is only available if PostgreSQL is compiled with SSL support.","documented":true,"environment":"","keyword":"requiressl"},"comparison_hash":"d18670084be5ed163c4669fea6e3c1c7843904bfff90968b560126e53ab466ac","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. If set to 0 (default), libpq will negotiate the connection type with the server (equivalent to sslmode prefer ). This option is only available if PostgreSQL is compiled with SSL support."],"description":["This option is deprecated in favor of the sslmode setting."],"description_zh":"此选项已弃用，请改用 sslmode 设置。 如果设置为 1，则需要与服务器建立 SSL 连接（这相当于 sslmode require ）。 libpq 将拒绝连接，如果服务器不接受 SSL 连接。如果设置为 0（默认值）， libpq 将与服务器协商连接类型（相当于 sslmode prefer ）。此选项仅在 PostgreSQL 编译时启用了 SSL 支持的情况下可用。","description_zh_html":"\u003cp\u003e连接参数 requiressl。\u003c/p\u003e\u003ch3\u003e同版本中文手册定义\u003c/h3\u003e\u003cdd\u003e\u003cp\u003e\n       此选项已弃用，请改用 \u003ccode class=\"literal\"\u003esslmode\u003c/code\u003e 设置。\n      \u003c/p\u003e\u003cp\u003e\n        如果设置为 1，则需要与服务器建立 \u003cacronym class=\"acronym\"\u003eSSL\u003c/acronym\u003e 连接（这相当于 \u003ccode class=\"literal\"\u003esslmode\u003c/code\u003e\n\u003ccode class=\"literal\"\u003erequire\u003c/code\u003e）。\u003cspan class=\"application\"\u003elibpq\u003c/span\u003e 将拒绝连接，如果服务器不接受\n        \u003cacronym class=\"acronym\"\u003eSSL\u003c/acronym\u003e 连接。如果设置为 0（默认值），\u003cspan class=\"application\"\u003elibpq\u003c/span\u003e 将与服务器协商连接类型（相当于 \u003ccode class=\"literal\"\u003esslmode\u003c/code\u003e\n\u003ccode class=\"literal\"\u003eprefer\u003c/code\u003e）。此选项仅在 \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e 编译时启用了 SSL 支持的情况下可用。\n       \u003c/p\u003e\u003c/dd\u003e\u003cp\u003e\u003ca href=\"/zh/docs/18/libpq-connect.html#LIBPQ-CONNECT-REQUIRESSL\"\u003e查看完整中文手册与上下文\u003c/a\u003e。\u003c/p\u003e","documented":true,"environment":[],"facts":[{"label":"Client library","value":"libpq 18.6"},{"label":"Manual definition","value":"Documented"}],"facts_zh":[{"label":"客户端库","value":"libpq 18.6"},{"label":"手册定义","value":"手册已记载"}],"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. If set to 0 (default), \u003cspan class=\"application\"\u003elibpq\u003c/span\u003e will negotiate the connection type with the server (equivalent to \u003ccode class=\"literal\"\u003esslmode\u003c/code\u003e \u003ccode class=\"literal\"\u003eprefer\u003c/code\u003e). This option is only available if \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e is compiled with SSL support.\u003c/p\u003e\n\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","manual_path":"libpq-connect.html#LIBPQ-CONNECT-REQUIRESSL","precedence_evidence":["The following environment variables can be used to select default connection parameter values, which will be used by PQconnectdb , PQsetdbLogin and PQsetdb if no value is directly specified by the calling code. 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."],"related":[{"label":"Connection service file","url":"/docs/18/libpq-pgservice.html"},{"label":"Password file","url":"/docs/18/libpq-pgpass.html"},{"label":"All libpq environment variables","url":"/docs/18/libpq-envars.html"}],"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"},"sections":[{"paragraphs":["The following environment variables can be used to select default connection parameter values, which will be used by PQconnectdb , PQsetdbLogin and PQsetdb if no value is directly specified by the calling code. 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"}],"sections_zh":[{"paragraphs":["以下环境变量可用于选择连接参数的默认值，供 PQconnectdb 、 PQsetdbLogin 和 PQsetdb 在调用代码未直接指定参数值时使用。例如，这样可以避免在简单的客户端应用程序中硬编码数据库连接信息。","服务名称可以在每个用户的服务文件或系统范围的文件中定义。如果同一个服务名称存在于用户文件和系统文件中，则用户文件优先。默认情况下，每个用户的服务文件名为 ~/.pg_service.conf 。在Microsoft Windows上，它的名称为 %APPDATA%\\postgresql\\.pg_service.conf （其中 %APPDATA% 指用户配置文件夹中的应用数据子目录）。可以通过设置环境变量 PGSERVICEFILE 来指定不同的文件名。系统范围的文件名为 pg_service.conf 。默认情况下，在 PostgreSQL 安装的 etc 目录中寻找（使用 pg_config --sysconfdir 来准确识别此目录）。可以通过设置环境变量 PGSYSCONFDIR 来指定另一个目录，但不能指定不同的文件名。","从服务文件中获取的连接参数会与其他来源的参数合并。服务文件中的设置会覆盖相应的环境变量，而连接字符串中直接给出的值又会覆盖服务文件中的设置。例如，使用上述服务文件时，连接字符串 service=mydb port=5434 将使用主机 somehost 、端口 5434 、用户 admin ，以及由环境变量或内置默认值设置的其他参数。"],"title":"默认值解析与服务文件优先级"},{"paragraphs":[],"title":"环境变量证据"}],"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":[],"tables_zh":[],"zh_from":{"authored_translation":"source-derived-identity","body_sha256":"628b4c812a8c5a5099bd3869da50680a2aab246bda42b34d2094678a8bf84ef1","kind":"same-version-chinese-manual-with-source-derived-identity","manual":{"anchor":"LIBPQ-CONNECT-REQUIRESSL","build_id":107,"extraction":"exact-definition","fragment_sha256":"7a223176169820c71cd04305130fd46caa075865ba4aede0bd14cdc2db23b467","locale":"zh-Hans","page_key":"libpq-connect.html","source_hash":"1555b03a2bc480920a9c72be9683ee3ddf99e8a5c17267c0dca73c42cd50e44c","source_revision":"unknown:rendered-translation-baseline","translated_from_revision":null,"translation_revision":"git:b1b500221dbe5437cfca004d6b04d3f6e422765d;html-sha256:08e987a66af27b98444a8057c256314eafa13611a3fb9e888214fc436824244b","url":"/zh/docs/18/libpq-connect.html#LIBPQ-CONNECT-REQUIRESSL","version":"18"},"runtime_rerun":false,"source_facts_revision":"ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8"}},"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. If set to 0 (default), \u003cspan class=\"application\"\u003elibpq\u003c/span\u003e will negotiate the connection type with the server (equivalent to \u003ccode class=\"literal\"\u003esslmode\u003c/code\u003e \u003ccode class=\"literal\"\u003eprefer\u003c/code\u003e). This option is only available if \u003cspan class=\"productname\"\u003ePostgreSQL\u003c/span\u003e is compiled with SSL support.\u003c/p\u003e\n\u003c/dd\u003e\u003c/dl\u003e\u003c/div\u003e","related":[{"label":"Connection service file","url":"/docs/18/libpq-pgservice.html"},{"label":"Password file","url":"/docs/18/libpq-pgpass.html"},{"label":"All libpq environment variables","url":"/docs/18/libpq-envars.html"}],"sections":[{"paragraphs":["The following environment variables can be used to select default connection parameter values, which will be used by PQconnectdb , PQsetdbLogin and PQsetdb if no value is directly specified by the calling code. 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":"en","Fallback":false,"Versions":["10","11","12","13","14","15","16","17","18","19","20"],"Locales":["en","zh-Hans"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}