feat(metainfo): define standard for backward prefix

bytedance · Oct 14, 2021 · 96c48ba · 96c48ba
1 parent 5e400b9
commit 96c48ba
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diff --git a/cloud/metainfo/http.go b/cloud/metainfo/http.go
@@ -23,9 +23,11 @@ import (
 const (
 	HTTPPrefixTransient  = "rpc-transit-"
 	HTTPPrefixPersistent = "rpc-persist-"
+	HTTPPrefixBackward   = "rpc-backward-"
 
 	lenHPT = len(HTTPPrefixTransient)
 	lenHPP = len(HTTPPrefixPersistent)
+	lenHPB = len(HTTPPrefixBackward)
 )
 
 // HTTPHeaderToCGIVariable performs an CGI variable conversion.

diff --git a/cloud/metainfo/info.go b/cloud/metainfo/info.go
@@ -23,10 +23,14 @@ const (
 	PrefixPersistent        = "RPC_PERSIST_"
 	PrefixTransient         = "RPC_TRANSIT_"
 	PrefixTransientUpstream = "RPC_TRANSIT_UPSTREAM_"
+	PrefixBackward          = "RPC_BACKWARD_"
+	PrefixBackwardUpstream  = "RPC_BACKWARD_UPSTREAM_"
 
 	lenPTU = len(PrefixTransientUpstream)
 	lenPT  = len(PrefixTransient)
 	lenPP  = len(PrefixPersistent)
+	lenB   = len(PrefixBackward)
+	lenBU  = len(PrefixBackwardUpstream)
 )
 
 // **Using empty string as key or value is not support.**