ngx.send_headers

语法: ok, err = ngx.send_headers()

环境: rewrite_by_lua, access_by_lua*, content_by_lua**

指名把应答头发送出去。

自从 v0.8.3 版本开始，成功情况该函数返回 1 ，否则返回 nil 和错误字符描述信息。

注意，在内容通过 ngx.say、ngx.print 输出或当 content_by_lua 存在时，ngx_lua 将自动发送头部内容，所以通常情况不需要手动发送应答头。

返回目录

English source:

ngx.send_headers

syntax: ok, err = ngx.send_headers()

context: rewrite_by_lua, access_by_lua*, content_by_lua**

Explicitly send out the response headers.

Since v0.8.3 this function returns 1 on success, or returns nil and a string describing the error otherwise.

Note that there is normally no need to manually send out response headers as ngx_lua will automatically send headers out before content is output with ngx.say or ngx.print or when content_by_lua exits normally.

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