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lua_http10_buffering.md 1.90 KB

lua_http10_buffering
--------------------

**语法:** *lua_http10_buffering on|off*

**默认:** *lua_http10_buffering on*

**环境:** *http, server, location, location-if*

对 HTTP 1.0（或更老）请求，启用或禁用自动应答缓冲区。这个缓冲机制主要用于应答头包含合适`Content-Length`长度的 HTTP 1.0 长连接。

如果 Lua 代码在发送应答头之前明确设置了应答头的`Content-Length`（调用 [ngx.send_headers](#ngxsend_headers) 或 隐式首次调用 [ngx.say](#ngxsay) 或 [ngx.print](#ngxprint) 其中任何一个），HTTP 1.0应答缓冲区都将被禁用，即使这个指令是打开的。

流式输出（例如，调用 [ngx.flush](#ngxflush)）非常大的应答体，为了占用内存最小，该指令必须设置为`off`。

该指令默认值是`on`。

该指令是在`v0.5.0rc19`版本首次引入的。

[返回目录](#directives)

> English source:

lua_http10_buffering
--------------------

**syntax:** *lua_http10_buffering on|off*

**default:** *lua_http10_buffering on*

**context:** *http, server, location, location-if*

Enables or disables automatic response buffering for HTTP 1.0 (or older) requests. This buffering mechanism is mainly used for HTTP 1.0 keep-alive which replies on a proper `Content-Length` response header.

If the Lua code explicitly sets a `Content-Length` response header before sending the headers (either explicitly via [ngx.send_headers](#ngxsend_headers) or implicitly via the first [ngx.say](#ngxsay) or [ngx.print](#ngxprint) call), then the HTTP 1.0 response buffering will be disabled even when this directive is turned on.

To output very large response data in a streaming fashion (via the [ngx.flush](#ngxflush) call, for example), this directive MUST be turned off to minimize memory usage.

This directive is turned `on` by default.

This directive was first introduced in the `v0.5.0rc19` release.

[Back to TOC](#directives)

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提交于 10年前 . 完成 lua_http10_buffering 章节

lua_http10_buffering
lua_http10_buffering

lua_http10_buffering

语法: lua_http10_buffering on|off

默认: lua_http10_buffering on

环境: http, server, location, location-if

对 HTTP 1.0（或更老）请求，启用或禁用自动应答缓冲区。这个缓冲机制主要用于应答头包含合适Content-Length长度的 HTTP 1.0 长连接。

如果 Lua 代码在发送应答头之前明确设置了应答头的Content-Length（调用 ngx.send_headers 或隐式首次调用 ngx.say 或 ngx.print 其中任何一个），HTTP 1.0应答缓冲区都将被禁用，即使这个指令是打开的。

流式输出（例如，调用 ngx.flush）非常大的应答体，为了占用内存最小，该指令必须设置为off。

该指令默认值是on。

该指令是在v0.5.0rc19版本首次引入的。

English source:

lua_http10_buffering

syntax: lua_http10_buffering on|off

default: lua_http10_buffering on

context: http, server, location, location-if

Enables or disables automatic response buffering for HTTP 1.0 (or older) requests. This buffering mechanism is mainly used for HTTP 1.0 keep-alive which replies on a proper Content-Length response header.

If the Lua code explicitly sets a Content-Length response header before sending the headers (either explicitly via ngx.send_headers or implicitly via the first ngx.say or ngx.print call), then the HTTP 1.0 response buffering will be disabled even when this directive is turned on.

To output very large response data in a streaming fashion (via the ngx.flush call, for example), this directive MUST be turned off to minimize memory usage.

This directive is turned on by default.

This directive was first introduced in the v0.5.0rc19 release.

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