Merge github.com:grpc/grpc into grand-unified-closures

5 files changed, 350 insertions, 109 deletions

diff --git a/src/core/lib/transport/static_metadata.c b/src/core/lib/transport/static_metadata.c
index c5f16e530d..8f3e5b5b40 100644
--- a/src/core/lib/transport/static_metadata.c
+++ b/src/core/lib/transport/static_metadata.c
@@ -45,21 +45,21 @@ grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];
 
 grpc_mdelem grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];
 uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT] = {
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 4, 8, 6, 2, 4, 8, 6, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 4, 8, 6, 2, 4, 8, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
 
 const uint8_t grpc_static_metadata_elem_indices[GRPC_STATIC_MDELEM_COUNT * 2] =
-    {11, 35, 10, 35, 12, 35, 12, 49, 13, 35, 14, 35, 15, 35, 16, 35, 17, 35,
-     19, 35, 20, 35, 21, 35, 24, 35, 25, 35, 26, 35, 27, 35, 28, 35, 29, 35,
-     30, 18, 30, 35, 31, 35, 32, 35, 36, 35, 37, 35, 38, 35, 39, 35, 42, 33,
-     42, 34, 42, 48, 42, 53, 42, 54, 42, 55, 42, 56, 43, 33, 43, 48, 43, 53,
-     46, 0,  46, 1,  46, 2,  50, 35, 57, 35, 58, 35, 59, 35, 60, 35, 61, 35,
-     62, 35, 63, 35, 64, 35, 65, 35, 66, 35, 67, 40, 67, 69, 67, 72, 68, 80,
-     68, 81, 70, 35, 71, 35, 73, 35, 74, 35, 75, 35, 76, 35, 77, 41, 77, 51,
-     77, 52, 78, 35, 79, 35, 82, 3,  82, 4,  82, 5,  82, 6,  82, 7,  82, 8,
-     82, 9,  83, 35, 84, 85, 86, 35, 87, 35, 88, 35, 89, 35, 90, 35};
+    {11, 33, 10, 33, 12, 33, 12, 49, 13, 33, 14, 33, 15, 33, 16, 33, 17, 33,
+     19, 33, 20, 33, 21, 33, 22, 33, 23, 33, 24, 33, 25, 33, 26, 33, 27, 33,
+     28, 18, 28, 33, 29, 33, 30, 33, 34, 33, 35, 33, 36, 33, 37, 33, 40, 31,
+     40, 32, 40, 48, 40, 53, 40, 54, 40, 55, 40, 56, 42, 31, 42, 48, 42, 53,
+     45, 0,  45, 1,  45, 2,  50, 33, 57, 33, 58, 33, 59, 33, 60, 33, 61, 33,
+     62, 33, 63, 33, 64, 33, 65, 33, 66, 33, 67, 33, 68, 38, 68, 70, 68, 73,
+     69, 81, 69, 82, 71, 33, 72, 33, 74, 33, 75, 33, 76, 33, 77, 33, 78, 39,
+     78, 51, 78, 52, 79, 33, 80, 33, 83, 3,  83, 4,  83, 5,  83, 6,  83, 7,
+     83, 8,  83, 9,  84, 33, 85, 86, 87, 33, 88, 33, 89, 33, 90, 33, 91, 33};
 
 const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT] = {
     "0",
@@ -84,8 +84,6 @@ const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT] = {
     ":authority",
     "authorization",
     "cache-control",
-    "census-bin",
-    "census-binary-bin",
     "content-disposition",
     "content-encoding",
     "content-language",
@@ -105,11 +103,13 @@ const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT] = {
     "GET",
     "grpc",
     "grpc-accept-encoding",
+    "grpc-census-bin",
     "grpc-encoding",
     "grpc-internal-encoding-request",
     "grpc-message",
     "grpc-status",
     "grpc-timeout",
+    "grpc-tracing-bin",
     "gzip",
     "gzip, deflate",
     "host",
@@ -126,7 +126,8 @@ const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT] = {
     "if-unmodified-since",
     "last-modified",
     "link",
-    "load-reporting",
+    "load-reporting-initial",
+    "load-reporting-trailing",
     "location",
     "max-forwards",
     ":method",
diff --git a/src/core/lib/transport/static_metadata.h b/src/core/lib/transport/static_metadata.h
index 5ff0d2f3bc..b51bacac50 100644
--- a/src/core/lib/transport/static_metadata.h
+++ b/src/core/lib/transport/static_metadata.h
@@ -44,7 +44,7 @@
 
 #include "src/core/lib/transport/metadata.h"
 
-#define GRPC_STATIC_MDSTR_COUNT 91
+#define GRPC_STATIC_MDSTR_COUNT 92
 extern grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];
 /* "0" */
 #define GRPC_MDSTR_0 (&grpc_static_mdstr_table[0])
@@ -90,58 +90,58 @@ extern grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];
 #define GRPC_MDSTR_AUTHORIZATION (&grpc_static_mdstr_table[20])
 /* "cache-control" */
 #define GRPC_MDSTR_CACHE_CONTROL (&grpc_static_mdstr_table[21])
-/* "census-bin" */
-#define GRPC_MDSTR_CENSUS_BIN (&grpc_static_mdstr_table[22])
-/* "census-binary-bin" */
-#define GRPC_MDSTR_CENSUS_BINARY_BIN (&grpc_static_mdstr_table[23])
 /* "content-disposition" */
-#define GRPC_MDSTR_CONTENT_DISPOSITION (&grpc_static_mdstr_table[24])
+#define GRPC_MDSTR_CONTENT_DISPOSITION (&grpc_static_mdstr_table[22])
 /* "content-encoding" */
-#define GRPC_MDSTR_CONTENT_ENCODING (&grpc_static_mdstr_table[25])
+#define GRPC_MDSTR_CONTENT_ENCODING (&grpc_static_mdstr_table[23])
 /* "content-language" */
-#define GRPC_MDSTR_CONTENT_LANGUAGE (&grpc_static_mdstr_table[26])
+#define GRPC_MDSTR_CONTENT_LANGUAGE (&grpc_static_mdstr_table[24])
 /* "content-length" */
-#define GRPC_MDSTR_CONTENT_LENGTH (&grpc_static_mdstr_table[27])
+#define GRPC_MDSTR_CONTENT_LENGTH (&grpc_static_mdstr_table[25])
 /* "content-location" */
-#define GRPC_MDSTR_CONTENT_LOCATION (&grpc_static_mdstr_table[28])
+#define GRPC_MDSTR_CONTENT_LOCATION (&grpc_static_mdstr_table[26])
 /* "content-range" */
-#define GRPC_MDSTR_CONTENT_RANGE (&grpc_static_mdstr_table[29])
+#define GRPC_MDSTR_CONTENT_RANGE (&grpc_static_mdstr_table[27])
 /* "content-type" */
-#define GRPC_MDSTR_CONTENT_TYPE (&grpc_static_mdstr_table[30])
+#define GRPC_MDSTR_CONTENT_TYPE (&grpc_static_mdstr_table[28])
 /* "cookie" */
-#define GRPC_MDSTR_COOKIE (&grpc_static_mdstr_table[31])
+#define GRPC_MDSTR_COOKIE (&grpc_static_mdstr_table[29])
 /* "date" */
-#define GRPC_MDSTR_DATE (&grpc_static_mdstr_table[32])
+#define GRPC_MDSTR_DATE (&grpc_static_mdstr_table[30])
 /* "deflate" */
-#define GRPC_MDSTR_DEFLATE (&grpc_static_mdstr_table[33])
+#define GRPC_MDSTR_DEFLATE (&grpc_static_mdstr_table[31])
 /* "deflate,gzip" */
-#define GRPC_MDSTR_DEFLATE_COMMA_GZIP (&grpc_static_mdstr_table[34])
+#define GRPC_MDSTR_DEFLATE_COMMA_GZIP (&grpc_static_mdstr_table[32])
 /* "" */
-#define GRPC_MDSTR_EMPTY (&grpc_static_mdstr_table[35])
+#define GRPC_MDSTR_EMPTY (&grpc_static_mdstr_table[33])
 /* "etag" */
-#define GRPC_MDSTR_ETAG (&grpc_static_mdstr_table[36])
+#define GRPC_MDSTR_ETAG (&grpc_static_mdstr_table[34])
 /* "expect" */
-#define GRPC_MDSTR_EXPECT (&grpc_static_mdstr_table[37])
+#define GRPC_MDSTR_EXPECT (&grpc_static_mdstr_table[35])
 /* "expires" */
-#define GRPC_MDSTR_EXPIRES (&grpc_static_mdstr_table[38])
+#define GRPC_MDSTR_EXPIRES (&grpc_static_mdstr_table[36])
 /* "from" */
-#define GRPC_MDSTR_FROM (&grpc_static_mdstr_table[39])
+#define GRPC_MDSTR_FROM (&grpc_static_mdstr_table[37])
 /* "GET" */
-#define GRPC_MDSTR_GET (&grpc_static_mdstr_table[40])
+#define GRPC_MDSTR_GET (&grpc_static_mdstr_table[38])
 /* "grpc" */
-#define GRPC_MDSTR_GRPC (&grpc_static_mdstr_table[41])
+#define GRPC_MDSTR_GRPC (&grpc_static_mdstr_table[39])
 /* "grpc-accept-encoding" */
-#define GRPC_MDSTR_GRPC_ACCEPT_ENCODING (&grpc_static_mdstr_table[42])
+#define GRPC_MDSTR_GRPC_ACCEPT_ENCODING (&grpc_static_mdstr_table[40])
+/* "grpc-census-bin" */
+#define GRPC_MDSTR_GRPC_CENSUS_BIN (&grpc_static_mdstr_table[41])
 /* "grpc-encoding" */
-#define GRPC_MDSTR_GRPC_ENCODING (&grpc_static_mdstr_table[43])
+#define GRPC_MDSTR_GRPC_ENCODING (&grpc_static_mdstr_table[42])
 /* "grpc-internal-encoding-request" */
-#define GRPC_MDSTR_GRPC_INTERNAL_ENCODING_REQUEST (&grpc_static_mdstr_table[44])
+#define GRPC_MDSTR_GRPC_INTERNAL_ENCODING_REQUEST (&grpc_static_mdstr_table[43])
 /* "grpc-message" */
-#define GRPC_MDSTR_GRPC_MESSAGE (&grpc_static_mdstr_table[45])
+#define GRPC_MDSTR_GRPC_MESSAGE (&grpc_static_mdstr_table[44])
 /* "grpc-status" */
-#define GRPC_MDSTR_GRPC_STATUS (&grpc_static_mdstr_table[46])
+#define GRPC_MDSTR_GRPC_STATUS (&grpc_static_mdstr_table[45])
 /* "grpc-timeout" */
-#define GRPC_MDSTR_GRPC_TIMEOUT (&grpc_static_mdstr_table[47])
+#define GRPC_MDSTR_GRPC_TIMEOUT (&grpc_static_mdstr_table[46])
+/* "grpc-tracing-bin" */
+#define GRPC_MDSTR_GRPC_TRACING_BIN (&grpc_static_mdstr_table[47])
 /* "gzip" */
 #define GRPC_MDSTR_GZIP (&grpc_static_mdstr_table[48])
 /* "gzip, deflate" */
@@ -175,62 +175,64 @@ extern grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];
 #define GRPC_MDSTR_LAST_MODIFIED (&grpc_static_mdstr_table[62])
 /* "link" */
 #define GRPC_MDSTR_LINK (&grpc_static_mdstr_table[63])
-/* "load-reporting" */
-#define GRPC_MDSTR_LOAD_REPORTING (&grpc_static_mdstr_table[64])
+/* "load-reporting-initial" */
+#define GRPC_MDSTR_LOAD_REPORTING_INITIAL (&grpc_static_mdstr_table[64])
+/* "load-reporting-trailing" */
+#define GRPC_MDSTR_LOAD_REPORTING_TRAILING (&grpc_static_mdstr_table[65])
 /* "location" */
-#define GRPC_MDSTR_LOCATION (&grpc_static_mdstr_table[65])
+#define GRPC_MDSTR_LOCATION (&grpc_static_mdstr_table[66])
 /* "max-forwards" */
-#define GRPC_MDSTR_MAX_FORWARDS (&grpc_static_mdstr_table[66])
+#define GRPC_MDSTR_MAX_FORWARDS (&grpc_static_mdstr_table[67])
 /* ":method" */
-#define GRPC_MDSTR_METHOD (&grpc_static_mdstr_table[67])
+#define GRPC_MDSTR_METHOD (&grpc_static_mdstr_table[68])
 /* ":path" */
-#define GRPC_MDSTR_PATH (&grpc_static_mdstr_table[68])
+#define GRPC_MDSTR_PATH (&grpc_static_mdstr_table[69])
 /* "POST" */
-#define GRPC_MDSTR_POST (&grpc_static_mdstr_table[69])
+#define GRPC_MDSTR_POST (&grpc_static_mdstr_table[70])
 /* "proxy-authenticate" */
-#define GRPC_MDSTR_PROXY_AUTHENTICATE (&grpc_static_mdstr_table[70])
+#define GRPC_MDSTR_PROXY_AUTHENTICATE (&grpc_static_mdstr_table[71])
 /* "proxy-authorization" */
-#define GRPC_MDSTR_PROXY_AUTHORIZATION (&grpc_static_mdstr_table[71])
+#define GRPC_MDSTR_PROXY_AUTHORIZATION (&grpc_static_mdstr_table[72])
 /* "PUT" */
-#define GRPC_MDSTR_PUT (&grpc_static_mdstr_table[72])
+#define GRPC_MDSTR_PUT (&grpc_static_mdstr_table[73])
 /* "range" */
-#define GRPC_MDSTR_RANGE (&grpc_static_mdstr_table[73])
+#define GRPC_MDSTR_RANGE (&grpc_static_mdstr_table[74])
 /* "referer" */
-#define GRPC_MDSTR_REFERER (&grpc_static_mdstr_table[74])
+#define GRPC_MDSTR_REFERER (&grpc_static_mdstr_table[75])
 /* "refresh" */
-#define GRPC_MDSTR_REFRESH (&grpc_static_mdstr_table[75])
+#define GRPC_MDSTR_REFRESH (&grpc_static_mdstr_table[76])
 /* "retry-after" */
-#define GRPC_MDSTR_RETRY_AFTER (&grpc_static_mdstr_table[76])
+#define GRPC_MDSTR_RETRY_AFTER (&grpc_static_mdstr_table[77])
 /* ":scheme" */
-#define GRPC_MDSTR_SCHEME (&grpc_static_mdstr_table[77])
+#define GRPC_MDSTR_SCHEME (&grpc_static_mdstr_table[78])
 /* "server" */
-#define GRPC_MDSTR_SERVER (&grpc_static_mdstr_table[78])
+#define GRPC_MDSTR_SERVER (&grpc_static_mdstr_table[79])
 /* "set-cookie" */
-#define GRPC_MDSTR_SET_COOKIE (&grpc_static_mdstr_table[79])
+#define GRPC_MDSTR_SET_COOKIE (&grpc_static_mdstr_table[80])
 /* "/" */
-#define GRPC_MDSTR_SLASH (&grpc_static_mdstr_table[80])
+#define GRPC_MDSTR_SLASH (&grpc_static_mdstr_table[81])
 /* "/index.html" */
-#define GRPC_MDSTR_SLASH_INDEX_DOT_HTML (&grpc_static_mdstr_table[81])
+#define GRPC_MDSTR_SLASH_INDEX_DOT_HTML (&grpc_static_mdstr_table[82])
 /* ":status" */
-#define GRPC_MDSTR_STATUS (&grpc_static_mdstr_table[82])
+#define GRPC_MDSTR_STATUS (&grpc_static_mdstr_table[83])
 /* "strict-transport-security" */
-#define GRPC_MDSTR_STRICT_TRANSPORT_SECURITY (&grpc_static_mdstr_table[83])
+#define GRPC_MDSTR_STRICT_TRANSPORT_SECURITY (&grpc_static_mdstr_table[84])
 /* "te" */
-#define GRPC_MDSTR_TE (&grpc_static_mdstr_table[84])
+#define GRPC_MDSTR_TE (&grpc_static_mdstr_table[85])
 /* "trailers" */
-#define GRPC_MDSTR_TRAILERS (&grpc_static_mdstr_table[85])
+#define GRPC_MDSTR_TRAILERS (&grpc_static_mdstr_table[86])
 /* "transfer-encoding" */
-#define GRPC_MDSTR_TRANSFER_ENCODING (&grpc_static_mdstr_table[86])
+#define GRPC_MDSTR_TRANSFER_ENCODING (&grpc_static_mdstr_table[87])
 /* "user-agent" */
-#define GRPC_MDSTR_USER_AGENT (&grpc_static_mdstr_table[87])
+#define GRPC_MDSTR_USER_AGENT (&grpc_static_mdstr_table[88])
 /* "vary" */
-#define GRPC_MDSTR_VARY (&grpc_static_mdstr_table[88])
+#define GRPC_MDSTR_VARY (&grpc_static_mdstr_table[89])
 /* "via" */
-#define GRPC_MDSTR_VIA (&grpc_static_mdstr_table[89])
+#define GRPC_MDSTR_VIA (&grpc_static_mdstr_table[90])
 /* "www-authenticate" */
-#define GRPC_MDSTR_WWW_AUTHENTICATE (&grpc_static_mdstr_table[90])
+#define GRPC_MDSTR_WWW_AUTHENTICATE (&grpc_static_mdstr_table[91])
 
-#define GRPC_STATIC_MDELEM_COUNT 80
+#define GRPC_STATIC_MDELEM_COUNT 81
 extern grpc_mdelem grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];
 extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];
 /* "accept-charset": "" */
@@ -335,73 +337,76 @@ extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];
 #define GRPC_MDELEM_LAST_MODIFIED_EMPTY (&grpc_static_mdelem_table[45])
 /* "link": "" */
 #define GRPC_MDELEM_LINK_EMPTY (&grpc_static_mdelem_table[46])
-/* "load-reporting": "" */
-#define GRPC_MDELEM_LOAD_REPORTING_EMPTY (&grpc_static_mdelem_table[47])
+/* "load-reporting-initial": "" */
+#define GRPC_MDELEM_LOAD_REPORTING_INITIAL_EMPTY (&grpc_static_mdelem_table[47])
+/* "load-reporting-trailing": "" */
+#define GRPC_MDELEM_LOAD_REPORTING_TRAILING_EMPTY \
+  (&grpc_static_mdelem_table[48])
 /* "location": "" */
-#define GRPC_MDELEM_LOCATION_EMPTY (&grpc_static_mdelem_table[48])
+#define GRPC_MDELEM_LOCATION_EMPTY (&grpc_static_mdelem_table[49])
 /* "max-forwards": "" */
-#define GRPC_MDELEM_MAX_FORWARDS_EMPTY (&grpc_static_mdelem_table[49])
+#define GRPC_MDELEM_MAX_FORWARDS_EMPTY (&grpc_static_mdelem_table[50])
 /* ":method": "GET" */
-#define GRPC_MDELEM_METHOD_GET (&grpc_static_mdelem_table[50])
+#define GRPC_MDELEM_METHOD_GET (&grpc_static_mdelem_table[51])
 /* ":method": "POST" */
-#define GRPC_MDELEM_METHOD_POST (&grpc_static_mdelem_table[51])
+#define GRPC_MDELEM_METHOD_POST (&grpc_static_mdelem_table[52])
 /* ":method": "PUT" */
-#define GRPC_MDELEM_METHOD_PUT (&grpc_static_mdelem_table[52])
+#define GRPC_MDELEM_METHOD_PUT (&grpc_static_mdelem_table[53])
 /* ":path": "/" */
-#define GRPC_MDELEM_PATH_SLASH (&grpc_static_mdelem_table[53])
+#define GRPC_MDELEM_PATH_SLASH (&grpc_static_mdelem_table[54])
 /* ":path": "/index.html" */
-#define GRPC_MDELEM_PATH_SLASH_INDEX_DOT_HTML (&grpc_static_mdelem_table[54])
+#define GRPC_MDELEM_PATH_SLASH_INDEX_DOT_HTML (&grpc_static_mdelem_table[55])
 /* "proxy-authenticate": "" */
-#define GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY (&grpc_static_mdelem_table[55])
+#define GRPC_MDELEM_PROXY_AUTHENTICATE_EMPTY (&grpc_static_mdelem_table[56])
 /* "proxy-authorization": "" */
-#define GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY (&grpc_static_mdelem_table[56])
+#define GRPC_MDELEM_PROXY_AUTHORIZATION_EMPTY (&grpc_static_mdelem_table[57])
 /* "range": "" */
-#define GRPC_MDELEM_RANGE_EMPTY (&grpc_static_mdelem_table[57])
+#define GRPC_MDELEM_RANGE_EMPTY (&grpc_static_mdelem_table[58])
 /* "referer": "" */
-#define GRPC_MDELEM_REFERER_EMPTY (&grpc_static_mdelem_table[58])
+#define GRPC_MDELEM_REFERER_EMPTY (&grpc_static_mdelem_table[59])
 /* "refresh": "" */
-#define GRPC_MDELEM_REFRESH_EMPTY (&grpc_static_mdelem_table[59])
+#define GRPC_MDELEM_REFRESH_EMPTY (&grpc_static_mdelem_table[60])
 /* "retry-after": "" */
-#define GRPC_MDELEM_RETRY_AFTER_EMPTY (&grpc_static_mdelem_table[60])
+#define GRPC_MDELEM_RETRY_AFTER_EMPTY (&grpc_static_mdelem_table[61])
 /* ":scheme": "grpc" */
-#define GRPC_MDELEM_SCHEME_GRPC (&grpc_static_mdelem_table[61])
+#define GRPC_MDELEM_SCHEME_GRPC (&grpc_static_mdelem_table[62])
 /* ":scheme": "http" */
-#define GRPC_MDELEM_SCHEME_HTTP (&grpc_static_mdelem_table[62])
+#define GRPC_MDELEM_SCHEME_HTTP (&grpc_static_mdelem_table[63])
 /* ":scheme": "https" */
-#define GRPC_MDELEM_SCHEME_HTTPS (&grpc_static_mdelem_table[63])
+#define GRPC_MDELEM_SCHEME_HTTPS (&grpc_static_mdelem_table[64])
 /* "server": "" */
-#define GRPC_MDELEM_SERVER_EMPTY (&grpc_static_mdelem_table[64])
+#define GRPC_MDELEM_SERVER_EMPTY (&grpc_static_mdelem_table[65])
 /* "set-cookie": "" */
-#define GRPC_MDELEM_SET_COOKIE_EMPTY (&grpc_static_mdelem_table[65])
+#define GRPC_MDELEM_SET_COOKIE_EMPTY (&grpc_static_mdelem_table[66])
 /* ":status": "200" */
-#define GRPC_MDELEM_STATUS_200 (&grpc_static_mdelem_table[66])
+#define GRPC_MDELEM_STATUS_200 (&grpc_static_mdelem_table[67])
 /* ":status": "204" */
-#define GRPC_MDELEM_STATUS_204 (&grpc_static_mdelem_table[67])
+#define GRPC_MDELEM_STATUS_204 (&grpc_static_mdelem_table[68])
 /* ":status": "206" */
-#define GRPC_MDELEM_STATUS_206 (&grpc_static_mdelem_table[68])
+#define GRPC_MDELEM_STATUS_206 (&grpc_static_mdelem_table[69])
 /* ":status": "304" */
-#define GRPC_MDELEM_STATUS_304 (&grpc_static_mdelem_table[69])
+#define GRPC_MDELEM_STATUS_304 (&grpc_static_mdelem_table[70])
 /* ":status": "400" */
-#define GRPC_MDELEM_STATUS_400 (&grpc_static_mdelem_table[70])
+#define GRPC_MDELEM_STATUS_400 (&grpc_static_mdelem_table[71])
 /* ":status": "404" */
-#define GRPC_MDELEM_STATUS_404 (&grpc_static_mdelem_table[71])
+#define GRPC_MDELEM_STATUS_404 (&grpc_static_mdelem_table[72])
 /* ":status": "500" */
-#define GRPC_MDELEM_STATUS_500 (&grpc_static_mdelem_table[72])
+#define GRPC_MDELEM_STATUS_500 (&grpc_static_mdelem_table[73])
 /* "strict-transport-security": "" */
 #define GRPC_MDELEM_STRICT_TRANSPORT_SECURITY_EMPTY \
-  (&grpc_static_mdelem_table[73])
+  (&grpc_static_mdelem_table[74])
 /* "te": "trailers" */
-#define GRPC_MDELEM_TE_TRAILERS (&grpc_static_mdelem_table[74])
+#define GRPC_MDELEM_TE_TRAILERS (&grpc_static_mdelem_table[75])
 /* "transfer-encoding": "" */
-#define GRPC_MDELEM_TRANSFER_ENCODING_EMPTY (&grpc_static_mdelem_table[75])
+#define GRPC_MDELEM_TRANSFER_ENCODING_EMPTY (&grpc_static_mdelem_table[76])
 /* "user-agent": "" */
-#define GRPC_MDELEM_USER_AGENT_EMPTY (&grpc_static_mdelem_table[76])
+#define GRPC_MDELEM_USER_AGENT_EMPTY (&grpc_static_mdelem_table[77])
 /* "vary": "" */
-#define GRPC_MDELEM_VARY_EMPTY (&grpc_static_mdelem_table[77])
+#define GRPC_MDELEM_VARY_EMPTY (&grpc_static_mdelem_table[78])
 /* "via": "" */
-#define GRPC_MDELEM_VIA_EMPTY (&grpc_static_mdelem_table[78])
+#define GRPC_MDELEM_VIA_EMPTY (&grpc_static_mdelem_table[79])
 /* "www-authenticate": "" */
-#define GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY (&grpc_static_mdelem_table[79])
+#define GRPC_MDELEM_WWW_AUTHENTICATE_EMPTY (&grpc_static_mdelem_table[80])
 
 extern const uint8_t
     grpc_static_metadata_elem_indices[GRPC_STATIC_MDELEM_COUNT * 2];
diff --git a/src/core/lib/transport/timeout_encoding.c b/src/core/lib/transport/timeout_encoding.c
new file mode 100644
index 0000000000..b58ebbd0a8
--- /dev/null
+++ b/src/core/lib/transport/timeout_encoding.c
@@ -0,0 +1,188 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "src/core/lib/transport/timeout_encoding.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/port_platform.h>
+#include "src/core/lib/support/string.h"
+
+static int64_t round_up(int64_t x, int64_t divisor) {
+  return (x / divisor + (x % divisor != 0)) * divisor;
+}
+
+/* round an integer up to the next value with three significant figures */
+static int64_t round_up_to_three_sig_figs(int64_t x) {
+  if (x < 1000) return x;
+  if (x < 10000) return round_up(x, 10);
+  if (x < 100000) return round_up(x, 100);
+  if (x < 1000000) return round_up(x, 1000);
+  if (x < 10000000) return round_up(x, 10000);
+  if (x < 100000000) return round_up(x, 100000);
+  if (x < 1000000000) return round_up(x, 1000000);
+  return round_up(x, 10000000);
+}
+
+/* encode our minimum viable timeout value */
+static void enc_tiny(char *buffer) { memcpy(buffer, "1n", 3); }
+
+static void enc_ext(char *buffer, int64_t value, char ext) {
+  int n = int64_ttoa(value, buffer);
+  buffer[n] = ext;
+  buffer[n + 1] = 0;
+}
+
+static void enc_seconds(char *buffer, int64_t sec) {
+  if (sec % 3600 == 0) {
+    enc_ext(buffer, sec / 3600, 'H');
+  } else if (sec % 60 == 0) {
+    enc_ext(buffer, sec / 60, 'M');
+  } else {
+    enc_ext(buffer, sec, 'S');
+  }
+}
+
+static void enc_nanos(char *buffer, int64_t x) {
+  x = round_up_to_three_sig_figs(x);
+  if (x < 100000) {
+    if (x % 1000 == 0) {
+      enc_ext(buffer, x / 1000, 'u');
+    } else {
+      enc_ext(buffer, x, 'n');
+    }
+  } else if (x < 100000000) {
+    if (x % 1000000 == 0) {
+      enc_ext(buffer, x / 1000000, 'm');
+    } else {
+      enc_ext(buffer, x / 1000, 'u');
+    }
+  } else if (x < 1000000000) {
+    enc_ext(buffer, x / 1000000, 'm');
+  } else {
+    /* note that this is only ever called with times of less than one second,
+       so if we reach here the time must have been rounded up to a whole second
+       (and no more) */
+    memcpy(buffer, "1S", 3);
+  }
+}
+
+static void enc_micros(char *buffer, int64_t x) {
+  x = round_up_to_three_sig_figs(x);
+  if (x < 100000) {
+    if (x % 1000 == 0) {
+      enc_ext(buffer, x / 1000, 'm');
+    } else {
+      enc_ext(buffer, x, 'u');
+    }
+  } else if (x < 100000000) {
+    if (x % 1000000 == 0) {
+      enc_ext(buffer, x / 1000000, 'S');
+    } else {
+      enc_ext(buffer, x / 1000, 'm');
+    }
+  } else {
+    enc_ext(buffer, x / 1000000, 'S');
+  }
+}
+
+void grpc_http2_encode_timeout(gpr_timespec timeout, char *buffer) {
+  if (timeout.tv_sec < 0) {
+    enc_tiny(buffer);
+  } else if (timeout.tv_sec == 0) {
+    enc_nanos(buffer, timeout.tv_nsec);
+  } else if (timeout.tv_sec < 1000 && timeout.tv_nsec != 0) {
+    enc_micros(buffer,
+               (int64_t)(timeout.tv_sec * 1000000) +
+                   (timeout.tv_nsec / 1000 + (timeout.tv_nsec % 1000 != 0)));
+  } else {
+    enc_seconds(buffer, timeout.tv_sec + (timeout.tv_nsec != 0));
+  }
+}
+
+static int is_all_whitespace(const char *p) {
+  while (*p == ' ') p++;
+  return *p == 0;
+}
+
+int grpc_http2_decode_timeout(const char *buffer, gpr_timespec *timeout) {
+  int32_t x = 0;
+  const uint8_t *p = (const uint8_t *)buffer;
+  int have_digit = 0;
+  /* skip whitespace */
+  for (; *p == ' '; p++)
+    ;
+  /* decode numeric part */
+  for (; *p >= '0' && *p <= '9'; p++) {
+    int32_t digit = (int32_t)(*p - (uint8_t)'0');
+    have_digit = 1;
+    /* spec allows max. 8 digits, but we allow values up to 1,000,000,000 */
+    if (x >= (100 * 1000 * 1000)) {
+      if (x != (100 * 1000 * 1000) || digit != 0) {
+        *timeout = gpr_inf_future(GPR_TIMESPAN);
+        return 1;
+      }
+    }
+    x = x * 10 + digit;
+  }
+  if (!have_digit) return 0;
+  /* skip whitespace */
+  for (; *p == ' '; p++)
+    ;
+  /* decode unit specifier */
+  switch (*p) {
+    case 'n':
+      *timeout = gpr_time_from_nanos(x, GPR_TIMESPAN);
+      break;
+    case 'u':
+      *timeout = gpr_time_from_micros(x, GPR_TIMESPAN);
+      break;
+    case 'm':
+      *timeout = gpr_time_from_millis(x, GPR_TIMESPAN);
+      break;
+    case 'S':
+      *timeout = gpr_time_from_seconds(x, GPR_TIMESPAN);
+      break;
+    case 'M':
+      *timeout = gpr_time_from_minutes(x, GPR_TIMESPAN);
+      break;
+    case 'H':
+      *timeout = gpr_time_from_hours(x, GPR_TIMESPAN);
+      break;
+    default:
+      return 0;
+  }
+  p++;
+  return is_all_whitespace((const char *)p);
+}
diff --git a/src/core/lib/transport/timeout_encoding.h b/src/core/lib/transport/timeout_encoding.h
new file mode 100644
index 0000000000..92f02f6ecd
--- /dev/null
+++ b/src/core/lib/transport/timeout_encoding.h
@@ -0,0 +1,47 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_CORE_LIB_TRANSPORT_TIMEOUT_ENCODING_H
+#define GRPC_CORE_LIB_TRANSPORT_TIMEOUT_ENCODING_H
+
+#include <grpc/support/time.h>
+#include "src/core/lib/support/string.h"
+
+#define GRPC_HTTP2_TIMEOUT_ENCODE_MIN_BUFSIZE (GPR_LTOA_MIN_BUFSIZE + 1)
+
+/* Encode/decode timeouts to the GRPC over HTTP/2 format;
+   encoding may round up arbitrarily */
+void grpc_http2_encode_timeout(gpr_timespec timeout, char *buffer);
+int grpc_http2_decode_timeout(const char *buffer, gpr_timespec *timeout);
+
+#endif /* GRPC_CORE_LIB_TRANSPORT_TIMEOUT_ENCODING_H */
diff --git a/src/core/lib/transport/transport.h b/src/core/lib/transport/transport.h
index 508b57a5b4..4f82794235 100644
--- a/src/core/lib/transport/transport.h
+++ b/src/core/lib/transport/transport.h
@@ -143,7 +143,7 @@ typedef struct grpc_transport_stream_op {
   /** If != GRPC_ERROR_NONE, cancel this stream */
   grpc_error *cancel_error;
 
-  /** If != GRPC_ERROR, send grpc-status, grpc-message, and close this
+  /** If != GRPC_ERROR_NONE, send grpc-status, grpc-message, and close this
       stream for both reading and writing */
   grpc_error *close_error;