Documentation
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Overview ¶
Package godebug makes the settings in the $GODEBUG environment variable available to other packages. These settings are often used for compatibility tweaks, when we need to change a default behavior but want to let users opt back in to the original. For example GODEBUG=http2server=0 disables HTTP/2 support in the net/http server.
In typical usage, code should declare a Setting as a global and then call Value each time the current setting value is needed:
var http2server = godebug.New("http2server")
func ServeConn(c net.Conn) {
if http2server.Value() == "0" {
disallow HTTP/2
...
}
...
}
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type Setting ¶ added in go1.20
type Setting struct {
// contains filtered or unexported fields
}
A Setting is a single setting in the $GODEBUG environment variable.
func (*Setting) String ¶ added in go1.20
String returns a printable form for the setting: name=value.
func (*Setting) Value ¶ added in go1.20
Value returns the current value for the GODEBUG setting s.
Value maintains an internal cache that is synchronized with changes to the $GODEBUG environment variable, making Value efficient to call as frequently as needed. Clients should therefore typically not attempt their own caching of Value's result.
Source Files