From a7615892f9fe596bb50268207191214dde31aafe Mon Sep 17 00:00:00 2001
From: Craig Tiller <craig.tiller@gmail.com>
Date: Tue, 15 Dec 2015 10:41:54 -0800
Subject: [PATCH] Allow . in header names

---
 src/core/transport/metadata.c                      | 2 +-
 tools/codegen/core/gen_legal_metadata_characters.c | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/core/transport/metadata.c b/src/core/transport/metadata.c
index df05d1a302f..02b24028205 100644
--- a/src/core/transport/metadata.c
+++ b/src/core/transport/metadata.c
@@ -703,7 +703,7 @@ static int conforms_to(grpc_mdstr *s, const gpr_uint8 *legal_bits) {
 
 int grpc_mdstr_is_legal_header(grpc_mdstr *s) {
   static const gpr_uint8 legal_header_bits[256 / 8] = {
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0xff, 0x03, 0x00, 0x00, 0x00,
+      0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0xff, 0x03, 0x00, 0x00, 0x00,
       0x80, 0xfe, 0xff, 0xff, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
   return conforms_to(s, legal_header_bits);
diff --git a/tools/codegen/core/gen_legal_metadata_characters.c b/tools/codegen/core/gen_legal_metadata_characters.c
index c6658f46c66..3c9e1c7619b 100644
--- a/tools/codegen/core/gen_legal_metadata_characters.c
+++ b/tools/codegen/core/gen_legal_metadata_characters.c
@@ -68,6 +68,7 @@ int main(void) {
   for (i = '0'; i <= '9'; i++) legal(i);
   legal('-');
   legal('_');
+  legal('.');
   dump();
 
   clear();