Merge remote-tracking branch 'upstream/master' into hpack_table

9 years ago · 98d53f6768
parent 1a6293f096 90da73714e
commit 98d53f6768
30 changed files with 1382 additions and 53 deletions
--- a/102
+++ b/102
@ -944,6 +944,9 @@ httpcli_format_request_test: $(BINDIR)/$(CONFIG)/httpcli_format_request_test
 httpcli_test: $(BINDIR)/$(CONFIG)/httpcli_test
 httpscli_test: $(BINDIR)/$(CONFIG)/httpscli_test
 init_test: $(BINDIR)/$(CONFIG)/init_test
+internal_api_canary_iomgr_test: $(BINDIR)/$(CONFIG)/internal_api_canary_iomgr_test
+internal_api_canary_support_test: $(BINDIR)/$(CONFIG)/internal_api_canary_support_test
+internal_api_canary_transport_test: $(BINDIR)/$(CONFIG)/internal_api_canary_transport_test
 invalid_call_argument_test: $(BINDIR)/$(CONFIG)/invalid_call_argument_test
 json_fuzzer_test: $(BINDIR)/$(CONFIG)/json_fuzzer_test
 json_rewrite: $(BINDIR)/$(CONFIG)/json_rewrite
@ -1255,6 +1258,9 @@ buildtests_c: privatelibs_c \
  $(BINDIR)/$(CONFIG)/httpcli_test \
  $(BINDIR)/$(CONFIG)/httpscli_test \
  $(BINDIR)/$(CONFIG)/init_test \
+  $(BINDIR)/$(CONFIG)/internal_api_canary_iomgr_test \
+  $(BINDIR)/$(CONFIG)/internal_api_canary_support_test \
+  $(BINDIR)/$(CONFIG)/internal_api_canary_transport_test \
  $(BINDIR)/$(CONFIG)/invalid_call_argument_test \
  $(BINDIR)/$(CONFIG)/json_rewrite \
  $(BINDIR)/$(CONFIG)/json_rewrite_test \
@ -8088,6 +8094,102 @@ endif
 endif


+INTERNAL_API_CANARY_IOMGR_TEST_SRC = \
+    test/core/internal_api_canaries/iomgr.c \
+
+INTERNAL_API_CANARY_IOMGR_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(INTERNAL_API_CANARY_IOMGR_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/internal_api_canary_iomgr_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/internal_api_canary_iomgr_test: $(INTERNAL_API_CANARY_IOMGR_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(INTERNAL_API_CANARY_IOMGR_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/internal_api_canary_iomgr_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/internal_api_canaries/iomgr.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_internal_api_canary_iomgr_test: $(INTERNAL_API_CANARY_IOMGR_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(INTERNAL_API_CANARY_IOMGR_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
+INTERNAL_API_CANARY_SUPPORT_TEST_SRC = \
+    test/core/internal_api_canaries/iomgr.c \
+
+INTERNAL_API_CANARY_SUPPORT_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(INTERNAL_API_CANARY_SUPPORT_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/internal_api_canary_support_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/internal_api_canary_support_test: $(INTERNAL_API_CANARY_SUPPORT_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(INTERNAL_API_CANARY_SUPPORT_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/internal_api_canary_support_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/internal_api_canaries/iomgr.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_internal_api_canary_support_test: $(INTERNAL_API_CANARY_SUPPORT_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(INTERNAL_API_CANARY_SUPPORT_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
+INTERNAL_API_CANARY_TRANSPORT_TEST_SRC = \
+    test/core/internal_api_canaries/iomgr.c \
+
+INTERNAL_API_CANARY_TRANSPORT_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(INTERNAL_API_CANARY_TRANSPORT_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/internal_api_canary_transport_test: openssl_dep_error
+
+else
+
+
+
+$(BINDIR)/$(CONFIG)/internal_api_canary_transport_test: $(INTERNAL_API_CANARY_TRANSPORT_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LD) $(LDFLAGS) $(INTERNAL_API_CANARY_TRANSPORT_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBS) $(LDLIBS_SECURE) -o $(BINDIR)/$(CONFIG)/internal_api_canary_transport_test
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/internal_api_canaries/iomgr.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_internal_api_canary_transport_test: $(INTERNAL_API_CANARY_TRANSPORT_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(INTERNAL_API_CANARY_TRANSPORT_TEST_OBJS:.o=.dep)
+endif
+endif
+
+
 INVALID_CALL_ARGUMENT_TEST_SRC = \
    test/core/end2end/invalid_call_argument_test.c \

--- a/build.yaml
+++ b/build.yaml
@ -1676,6 +1676,39 @@ targets:
  - grpc
  - gpr_test_util
  - gpr
+- name: internal_api_canary_iomgr_test
+  build: test
+  run: false
+  language: c
+  src:
+  - test/core/internal_api_canaries/iomgr.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+- name: internal_api_canary_support_test
+  build: test
+  run: false
+  language: c
+  src:
+  - test/core/internal_api_canaries/iomgr.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
+- name: internal_api_canary_transport_test
+  build: test
+  run: false
+  language: c
+  src:
+  - test/core/internal_api_canaries/iomgr.c
+  deps:
+  - grpc_test_util
+  - grpc
+  - gpr_test_util
+  - gpr
 - name: invalid_call_argument_test
  build: test
  language: c
--- a/src/core/ext/transport/chttp2/transport/chttp2_transport.c
+++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.c
@ -758,23 +758,35 @@ static void maybe_start_some_streams(
  }
 }

+#define CLOSURE_BARRIER_STATS_BIT (1 << 0)
+#define CLOSURE_BARRIER_FAILURE_BIT (1 << 1)
+#define CLOSURE_BARRIER_FIRST_REF_BIT (1 << 16)
+
 static grpc_closure *add_closure_barrier(grpc_closure *closure) {
-  closure->final_data += 2;
+  closure->final_data += CLOSURE_BARRIER_FIRST_REF_BIT;
  return closure;
 }

 void grpc_chttp2_complete_closure_step(grpc_exec_ctx *exec_ctx,
+                                       grpc_chttp2_stream_global *stream_global,
                                       grpc_closure **pclosure, int success) {
  grpc_closure *closure = *pclosure;
  if (closure == NULL) {
    return;
  }
-  closure->final_data -= 2;
+  closure->final_data -= CLOSURE_BARRIER_FIRST_REF_BIT;
  if (!success) {
-    closure->final_data |= 1;
+    closure->final_data |= CLOSURE_BARRIER_FAILURE_BIT;
  }
-  if (closure->final_data < 2) {
-    grpc_exec_ctx_enqueue(exec_ctx, closure, closure->final_data == 0, NULL);
+  if (closure->final_data < CLOSURE_BARRIER_FIRST_REF_BIT) {
+    if (closure->final_data & CLOSURE_BARRIER_STATS_BIT) {
+      grpc_transport_move_stats(&stream_global->stats,
+                                stream_global->collecting_stats);
+      stream_global->collecting_stats = NULL;
+    }
+    grpc_exec_ctx_enqueue(
+        exec_ctx, closure,
+        (closure->final_data & CLOSURE_BARRIER_FAILURE_BIT) == 0, NULL);
  }
  *pclosure = NULL;
 }
@ -807,7 +819,13 @@ static void perform_stream_op_locked(
  }
  /* use final_data as a barrier until enqueue time; the inital counter is
     dropped at the end of this function */
-  on_complete->final_data = 2;
+  on_complete->final_data = CLOSURE_BARRIER_FIRST_REF_BIT;
+
+  if (op->collect_stats != NULL) {
+    GPR_ASSERT(stream_global->collecting_stats == NULL);
+    stream_global->collecting_stats = op->collect_stats;
+    on_complete->final_data |= CLOSURE_BARRIER_STATS_BIT;
+  }

  if (op->cancel_with_status != GRPC_STATUS_OK) {
    cancel_from_api(exec_ctx, transport_global, stream_global,
@ -840,7 +858,8 @@ static void perform_stream_op_locked(
      }
    } else {
      grpc_chttp2_complete_closure_step(
-          exec_ctx, &stream_global->send_initial_metadata_finished, 0);
+          exec_ctx, stream_global,
+          &stream_global->send_initial_metadata_finished, 0);
    }
  }

@ -850,7 +869,7 @@ static void perform_stream_op_locked(
    stream_global->send_message_finished = add_closure_barrier(on_complete);
    if (stream_global->write_closed) {
      grpc_chttp2_complete_closure_step(
-          exec_ctx, &stream_global->send_message_finished, 0);
+          exec_ctx, stream_global, &stream_global->send_message_finished, 0);
    } else {
      stream_global->send_message = op->send_message;
      if (stream_global->id != 0) {
@ -870,7 +889,8 @@ static void perform_stream_op_locked(
    }
    if (stream_global->write_closed) {
      grpc_chttp2_complete_closure_step(
-          exec_ctx, &stream_global->send_trailing_metadata_finished,
+          exec_ctx, stream_global,
+          &stream_global->send_trailing_metadata_finished,
          grpc_metadata_batch_is_empty(op->send_trailing_metadata));
    } else if (stream_global->id != 0) {
      /* TODO(ctiller): check if there's flow control for any outstanding
@ -909,7 +929,7 @@ static void perform_stream_op_locked(
    grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
  }

-  grpc_chttp2_complete_closure_step(exec_ctx, &on_complete, 1);
+  grpc_chttp2_complete_closure_step(exec_ctx, stream_global, &on_complete, 1);

  GPR_TIMER_END("perform_stream_op_locked", 0);
 }
@ -1080,7 +1100,8 @@ static void check_read_ops(grpc_exec_ctx *exec_ctx,
            &stream_global->received_trailing_metadata,
            stream_global->recv_trailing_metadata);
        grpc_chttp2_complete_closure_step(
-            exec_ctx, &stream_global->recv_trailing_metadata_finished, 1);
+            exec_ctx, stream_global,
+            &stream_global->recv_trailing_metadata_finished, 1);
      }
    }
  }
@ -1131,7 +1152,8 @@ static void cancel_from_api(grpc_exec_ctx *exec_ctx,
        &transport_global->qbuf,
        grpc_chttp2_rst_stream_create(
            stream_global->id,
-            (uint32_t)grpc_chttp2_grpc_status_to_http2_error(status)));
+            (uint32_t)grpc_chttp2_grpc_status_to_http2_error(status),
+            &stream_global->stats.outgoing));
  }
  grpc_chttp2_fake_status(exec_ctx, transport_global, stream_global, status,
                          NULL);
@ -1179,10 +1201,12 @@ void grpc_chttp2_fake_status(grpc_exec_ctx *exec_ctx,
 static void fail_pending_writes(grpc_exec_ctx *exec_ctx,
                                grpc_chttp2_stream_global *stream_global) {
  grpc_chttp2_complete_closure_step(
-      exec_ctx, &stream_global->send_initial_metadata_finished, 0);
+      exec_ctx, stream_global, &stream_global->send_initial_metadata_finished,
+      0);
  grpc_chttp2_complete_closure_step(
-      exec_ctx, &stream_global->send_trailing_metadata_finished, 0);
-  grpc_chttp2_complete_closure_step(exec_ctx,
+      exec_ctx, stream_global, &stream_global->send_trailing_metadata_finished,
+      0);
+  grpc_chttp2_complete_closure_step(exec_ctx, stream_global,
                                    &stream_global->send_message_finished, 0);
 }

@ -1319,7 +1343,8 @@ static void close_from_api(grpc_exec_ctx *exec_ctx,

  gpr_slice_buffer_add(
      &transport_global->qbuf,
-      grpc_chttp2_rst_stream_create(stream_global->id, GRPC_CHTTP2_NO_ERROR));
+      grpc_chttp2_rst_stream_create(stream_global->id, GRPC_CHTTP2_NO_ERROR,
+                                    &stream_global->stats.outgoing));

  if (optional_message) {
    gpr_slice_ref(*optional_message);
--- a/src/core/ext/transport/chttp2/transport/frame_data.c
+++ b/src/core/ext/transport/chttp2/transport/frame_data.c
@ -113,11 +113,13 @@ grpc_byte_stream *grpc_chttp2_incoming_frame_queue_pop(

 void grpc_chttp2_encode_data(uint32_t id, gpr_slice_buffer *inbuf,
                             uint32_t write_bytes, int is_eof,
+                             grpc_transport_one_way_stats *stats,
                             gpr_slice_buffer *outbuf) {
  gpr_slice hdr;
  uint8_t *p;
+  static const size_t header_size = 9;

-  hdr = gpr_slice_malloc(9);
+  hdr = gpr_slice_malloc(header_size);
  p = GPR_SLICE_START_PTR(hdr);
  GPR_ASSERT(write_bytes < (1 << 24));
  *p++ = (uint8_t)(write_bytes >> 16);
@ -132,6 +134,9 @@ void grpc_chttp2_encode_data(uint32_t id, gpr_slice_buffer *inbuf,
  gpr_slice_buffer_add(outbuf, hdr);

  gpr_slice_buffer_move_first(inbuf, write_bytes, outbuf);
+
+  stats->framing_bytes += header_size;
+  stats->data_bytes += write_bytes;
 }

 grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
@ -156,6 +161,7 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
  switch (p->state) {
  fh_0:
    case GRPC_CHTTP2_DATA_FH_0:
+      stream_parsing->stats.incoming.framing_bytes++;
      p->frame_type = *cur;
      switch (p->frame_type) {
        case 0:
@ -174,6 +180,7 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
      }
    /* fallthrough */
    case GRPC_CHTTP2_DATA_FH_1:
+      stream_parsing->stats.incoming.framing_bytes++;
      p->frame_size = ((uint32_t)*cur) << 24;
      if (++cur == end) {
        p->state = GRPC_CHTTP2_DATA_FH_2;
@ -181,6 +188,7 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
      }
    /* fallthrough */
    case GRPC_CHTTP2_DATA_FH_2:
+      stream_parsing->stats.incoming.framing_bytes++;
      p->frame_size |= ((uint32_t)*cur) << 16;
      if (++cur == end) {
        p->state = GRPC_CHTTP2_DATA_FH_3;
@ -188,6 +196,7 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
      }
    /* fallthrough */
    case GRPC_CHTTP2_DATA_FH_3:
+      stream_parsing->stats.incoming.framing_bytes++;
      p->frame_size |= ((uint32_t)*cur) << 8;
      if (++cur == end) {
        p->state = GRPC_CHTTP2_DATA_FH_4;
@ -195,6 +204,7 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
      }
    /* fallthrough */
    case GRPC_CHTTP2_DATA_FH_4:
+      stream_parsing->stats.incoming.framing_bytes++;
      p->frame_size |= ((uint32_t)*cur);
      p->state = GRPC_CHTTP2_DATA_FRAME;
      ++cur;
@ -215,7 +225,9 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
      }
      grpc_chttp2_list_add_parsing_seen_stream(transport_parsing,
                                               stream_parsing);
-      if ((uint32_t)(end - cur) == p->frame_size) {
+      uint32_t remaining = (uint32_t)(end - cur);
+      if (remaining == p->frame_size) {
+        stream_parsing->stats.incoming.data_bytes += p->frame_size;
        grpc_chttp2_incoming_byte_stream_push(
            exec_ctx, p->parsing_frame,
            gpr_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
@ -224,7 +236,8 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
        p->parsing_frame = NULL;
        p->state = GRPC_CHTTP2_DATA_FH_0;
        return GRPC_CHTTP2_PARSE_OK;
-      } else if ((uint32_t)(end - cur) > p->frame_size) {
+      } else if (remaining > p->frame_size) {
+        stream_parsing->stats.incoming.data_bytes += p->frame_size;
        grpc_chttp2_incoming_byte_stream_push(
            exec_ctx, p->parsing_frame,
            gpr_slice_sub(slice, (size_t)(cur - beg),
@ -235,11 +248,12 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
        cur += p->frame_size;
        goto fh_0; /* loop */
      } else {
+        GPR_ASSERT(remaining <= p->frame_size);
        grpc_chttp2_incoming_byte_stream_push(
            exec_ctx, p->parsing_frame,
            gpr_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
-        GPR_ASSERT((size_t)(end - cur) <= p->frame_size);
-        p->frame_size -= (uint32_t)(end - cur);
+        p->frame_size -= remaining;
+        stream_parsing->stats.incoming.data_bytes += remaining;
        return GRPC_CHTTP2_PARSE_OK;
      }
  }
--- a/src/core/ext/transport/chttp2/transport/frame_data.h
+++ b/src/core/ext/transport/chttp2/transport/frame_data.h
@ -41,6 +41,7 @@
 #include "src/core/ext/transport/chttp2/transport/frame.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
 #include "src/core/lib/transport/byte_stream.h"
+#include "src/core/lib/transport/transport.h"

 typedef enum {
  GRPC_CHTTP2_DATA_FH_0,
@ -96,6 +97,7 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(

 void grpc_chttp2_encode_data(uint32_t id, gpr_slice_buffer *inbuf,
                             uint32_t write_bytes, int is_eof,
+                             grpc_transport_one_way_stats *stats,
                             gpr_slice_buffer *outbuf);

 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_DATA_H */
--- a/src/core/ext/transport/chttp2/transport/frame_rst_stream.c
+++ b/src/core/ext/transport/chttp2/transport/frame_rst_stream.c
@ -38,8 +38,11 @@

 #include "src/core/ext/transport/chttp2/transport/frame.h"

-gpr_slice grpc_chttp2_rst_stream_create(uint32_t id, uint32_t code) {
-  gpr_slice slice = gpr_slice_malloc(13);
+gpr_slice grpc_chttp2_rst_stream_create(uint32_t id, uint32_t code,
+                                        grpc_transport_one_way_stats *stats) {
+  static const size_t frame_size = 13;
+  gpr_slice slice = gpr_slice_malloc(frame_size);
+  stats->framing_bytes += frame_size;
  uint8_t *p = GPR_SLICE_START_PTR(slice);

  *p++ = 0;
@ -84,6 +87,7 @@ grpc_chttp2_parse_error grpc_chttp2_rst_stream_parser_parse(
    cur++;
    p->byte++;
  }
+  stream_parsing->stats.incoming.framing_bytes += (uint64_t)(end - cur);

  if (p->byte == 4) {
    GPR_ASSERT(is_last);
--- a/src/core/ext/transport/chttp2/transport/frame_rst_stream.h
+++ b/src/core/ext/transport/chttp2/transport/frame_rst_stream.h
@ -37,13 +37,15 @@
 #include <grpc/support/slice.h>
 #include "src/core/ext/transport/chttp2/transport/frame.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/transport.h"

 typedef struct {
  uint8_t byte;
  uint8_t reason_bytes[4];
 } grpc_chttp2_rst_stream_parser;

-gpr_slice grpc_chttp2_rst_stream_create(uint32_t stream_id, uint32_t code);
+gpr_slice grpc_chttp2_rst_stream_create(uint32_t stream_id, uint32_t code,
+                                        grpc_transport_one_way_stats *stats);

 grpc_chttp2_parse_error grpc_chttp2_rst_stream_parser_begin_frame(
    grpc_chttp2_rst_stream_parser *parser, uint32_t length, uint8_t flags);
--- a/src/core/ext/transport/chttp2/transport/frame_window_update.c
+++ b/src/core/ext/transport/chttp2/transport/frame_window_update.c
@ -36,9 +36,11 @@

 #include <grpc/support/log.h>

-gpr_slice grpc_chttp2_window_update_create(uint32_t id,
-                                           uint32_t window_update) {
-  gpr_slice slice = gpr_slice_malloc(13);
+gpr_slice grpc_chttp2_window_update_create(
+    uint32_t id, uint32_t window_update, grpc_transport_one_way_stats *stats) {
+  static const size_t frame_size = 13;
+  gpr_slice slice = gpr_slice_malloc(frame_size);
+  stats->header_bytes += frame_size;
  uint8_t *p = GPR_SLICE_START_PTR(slice);

  GPR_ASSERT(window_update);
@ -87,6 +89,10 @@ grpc_chttp2_parse_error grpc_chttp2_window_update_parser_parse(
    p->byte++;
  }

+  if (stream_parsing != NULL) {
+    stream_parsing->stats.incoming.framing_bytes += (uint32_t)(end - cur);
+  }
+
  if (p->byte == 4) {
    uint32_t received_update = p->amount;
    if (received_update == 0 || (received_update & 0x80000000u)) {
--- a/src/core/ext/transport/chttp2/transport/frame_window_update.h
+++ b/src/core/ext/transport/chttp2/transport/frame_window_update.h
@ -37,6 +37,7 @@
 #include <grpc/support/slice.h>
 #include "src/core/ext/transport/chttp2/transport/frame.h"
 #include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/transport/transport.h"

 typedef struct {
  uint8_t byte;
@ -44,7 +45,8 @@ typedef struct {
  uint32_t amount;
 } grpc_chttp2_window_update_parser;

-gpr_slice grpc_chttp2_window_update_create(uint32_t id, uint32_t window_delta);
+gpr_slice grpc_chttp2_window_update_create(uint32_t id, uint32_t window_delta,
+                                           grpc_transport_one_way_stats *stats);

 grpc_chttp2_parse_error grpc_chttp2_window_update_parser_begin_frame(
    grpc_chttp2_window_update_parser *parser, uint32_t length, uint8_t flags);
--- a/src/core/ext/transport/chttp2/transport/hpack_encoder.c
+++ b/src/core/ext/transport/chttp2/transport/hpack_encoder.c
@ -75,6 +75,7 @@ typedef struct {
  /* output stream id */
  uint32_t stream_id;
  gpr_slice_buffer *output;
+  grpc_transport_one_way_stats *stats;
 } framer_state;

 /* fills p (which is expected to be 9 bytes long) with a data frame header */
@ -103,6 +104,7 @@ static void finish_frame(framer_state *st, int is_header_boundary,
      st->stream_id, st->output->length - st->output_length_at_start_of_frame,
      (uint8_t)((is_last_in_stream ? GRPC_CHTTP2_DATA_FLAG_END_STREAM : 0) |
                (is_header_boundary ? GRPC_CHTTP2_DATA_FLAG_END_HEADERS : 0)));
+  st->stats->framing_bytes += 9;
  st->is_first_frame = 0;
 }

@ -148,8 +150,10 @@ static void add_header_data(framer_state *st, gpr_slice slice) {
  remaining = GRPC_CHTTP2_MAX_PAYLOAD_LENGTH +
              st->output_length_at_start_of_frame - st->output->length;
  if (len <= remaining) {
+    st->stats->header_bytes += len;
    gpr_slice_buffer_add(st->output, slice);
  } else {
+    st->stats->header_bytes += remaining;
    gpr_slice_buffer_add(st->output, gpr_slice_split_head(&slice, remaining));
    finish_frame(st, 0, 0);
    begin_frame(st);
@ -534,6 +538,7 @@ void grpc_chttp2_hpack_compressor_set_max_table_size(
 void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor *c,
                               uint32_t stream_id,
                               grpc_metadata_batch *metadata, int is_eof,
+                               grpc_transport_one_way_stats *stats,
                               gpr_slice_buffer *outbuf) {
  framer_state st;
  grpc_linked_mdelem *l;
@ -545,6 +550,7 @@ void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor *c,
  st.stream_id = stream_id;
  st.output = outbuf;
  st.is_first_frame = 1;
+  st.stats = stats;

  /* Encode a metadata batch; store the returned values, representing
     a metadata element that needs to be unreffed back into the metadata
--- a/src/core/ext/transport/chttp2/transport/hpack_encoder.h
+++ b/src/core/ext/transport/chttp2/transport/hpack_encoder.h
@ -40,6 +40,7 @@
 #include "src/core/ext/transport/chttp2/transport/frame.h"
 #include "src/core/lib/transport/metadata.h"
 #include "src/core/lib/transport/metadata_batch.h"
+#include "src/core/lib/transport/transport.h"

 #define GRPC_CHTTP2_HPACKC_NUM_FILTERS 256
 #define GRPC_CHTTP2_HPACKC_NUM_VALUES 256
@ -90,6 +91,7 @@ void grpc_chttp2_hpack_compressor_set_max_usable_size(

 void grpc_chttp2_encode_header(grpc_chttp2_hpack_compressor *c, uint32_t id,
                               grpc_metadata_batch *metadata, int is_eof,
+                               grpc_transport_one_way_stats *stats,
                               gpr_slice_buffer *outbuf);

 #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_ENCODER_H */
--- a/src/core/ext/transport/chttp2/transport/hpack_parser.c
+++ b/src/core/ext/transport/chttp2/transport/hpack_parser.c
@ -1426,6 +1426,9 @@ grpc_chttp2_parse_error grpc_chttp2_header_parser_parse(
    grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) {
  grpc_chttp2_hpack_parser *parser = hpack_parser;
  GPR_TIMER_BEGIN("grpc_chttp2_hpack_parser_parse", 0);
+  if (stream_parsing != NULL) {
+    stream_parsing->stats.incoming.header_bytes += GPR_SLICE_LENGTH(slice);
+  }
  if (!grpc_chttp2_hpack_parser_parse(parser, GPR_SLICE_START_PTR(slice),
                                      GPR_SLICE_END_PTR(slice))) {
    GPR_TIMER_END("grpc_chttp2_hpack_parser_parse", 0);
--- a/src/core/ext/transport/chttp2/transport/internal.h
+++ b/src/core/ext/transport/chttp2/transport/internal.h
@ -394,6 +394,9 @@ typedef struct {
  grpc_metadata_batch *recv_trailing_metadata;
  grpc_closure *recv_trailing_metadata_finished;

+  grpc_transport_stream_stats *collecting_stats;
+  grpc_transport_stream_stats stats;
+
  /** when the application requests writes be closed, the write_closed is
      'queued'; when the close is flow controlled into the send path, we are
      'sending' it; when the write has been performed it is 'sent' */
@ -435,6 +438,8 @@ typedef struct {
  gpr_slice fetching_slice;
  size_t stream_fetched;
  grpc_closure finished_fetch;
+  /** stats gathered during the write */
+  grpc_transport_one_way_stats stats;
 } grpc_chttp2_stream_writing;

 struct grpc_chttp2_stream_parsing {
@ -460,6 +465,8 @@ struct grpc_chttp2_stream_parsing {
  int64_t outgoing_window;
  /** number of bytes received - reset at end of parse thread execution */
  int64_t received_bytes;
+  /** stats gathered during the parse */
+  grpc_transport_stream_stats stats;

  /** incoming metadata */
  grpc_chttp2_incoming_metadata_buffer metadata_buffer[2];
@ -635,6 +642,7 @@ void grpc_chttp2_parsing_become_skip_parser(
    grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing);

 void grpc_chttp2_complete_closure_step(grpc_exec_ctx *exec_ctx,
+                                       grpc_chttp2_stream_global *stream_global,
                                       grpc_closure **pclosure, int success);

 #define GRPC_CHTTP2_CLIENT_CONNECT_STRING "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
--- a/src/core/ext/transport/chttp2/transport/parsing.c
+++ b/src/core/ext/transport/chttp2/transport/parsing.c
@ -171,6 +171,9 @@ void grpc_chttp2_publish_reads(
      grpc_chttp2_list_add_check_read_ops(transport_global, stream_global);
    }

+    /* flush stats to global stream state */
+    grpc_transport_move_stats(&stream_parsing->stats, &stream_global->stats);
+
    /* update outgoing flow control window */
    was_zero = stream_global->outgoing_window <= 0;
    GRPC_CHTTP2_FLOW_MOVE_STREAM("parsed", transport_global, stream_global,
@ -544,8 +547,13 @@ static int init_data_frame_parser(
      grpc_chttp2_parsing_lookup_stream(transport_parsing,
                                        transport_parsing->incoming_stream_id);
  grpc_chttp2_parse_error err = GRPC_CHTTP2_PARSE_OK;
-  if (!stream_parsing || stream_parsing->received_close)
+  if (stream_parsing == NULL) {
+    return init_skip_frame_parser(exec_ctx, transport_parsing, 0);
+  }
+  stream_parsing->stats.incoming.framing_bytes += 9;
+  if (stream_parsing->received_close) {
    return init_skip_frame_parser(exec_ctx, transport_parsing, 0);
+  }
  if (err == GRPC_CHTTP2_PARSE_OK) {
    err = update_incoming_window(exec_ctx, transport_parsing, stream_parsing);
  }
@ -566,7 +574,8 @@ static int init_data_frame_parser(
      gpr_slice_buffer_add(
          &transport_parsing->qbuf,
          grpc_chttp2_rst_stream_create(transport_parsing->incoming_stream_id,
-                                        GRPC_CHTTP2_PROTOCOL_ERROR));
+                                        GRPC_CHTTP2_PROTOCOL_ERROR,
+                                        &stream_parsing->stats.outgoing));
      return init_skip_frame_parser(exec_ctx, transport_parsing, 0);
    case GRPC_CHTTP2_CONNECTION_ERROR:
      return 0;
@ -717,6 +726,7 @@ static int init_header_frame_parser(
    transport_parsing->incoming_stream = stream_parsing;
  }
  GPR_ASSERT(stream_parsing != NULL && (via_accept == 0 || via_accept == 1));
+  stream_parsing->stats.incoming.framing_bytes += 9;
  if (stream_parsing->received_close) {
    gpr_log(GPR_ERROR, "skipping already closed grpc_chttp2_stream header");
    transport_parsing->incoming_stream = NULL;
@ -752,9 +762,14 @@ static int init_window_update_frame_parser(
                                       &transport_parsing->simple.window_update,
                                       transport_parsing->incoming_frame_size,
                                       transport_parsing->incoming_frame_flags);
-  if (transport_parsing->incoming_stream_id) {
-    transport_parsing->incoming_stream = grpc_chttp2_parsing_lookup_stream(
-        transport_parsing, transport_parsing->incoming_stream_id);
+  if (transport_parsing->incoming_stream_id != 0) {
+    grpc_chttp2_stream_parsing *stream_parsing =
+        transport_parsing->incoming_stream = grpc_chttp2_parsing_lookup_stream(
+            transport_parsing, transport_parsing->incoming_stream_id);
+    if (stream_parsing == NULL) {
+      return init_skip_frame_parser(exec_ctx, transport_parsing, 0);
+    }
+    stream_parsing->stats.incoming.framing_bytes += 9;
  }
  transport_parsing->parser = grpc_chttp2_window_update_parser_parse;
  transport_parsing->parser_data = &transport_parsing->simple.window_update;
@ -778,11 +793,13 @@ static int init_rst_stream_parser(
                                       &transport_parsing->simple.rst_stream,
                                       transport_parsing->incoming_frame_size,
                                       transport_parsing->incoming_frame_flags);
-  transport_parsing->incoming_stream = grpc_chttp2_parsing_lookup_stream(
-      transport_parsing, transport_parsing->incoming_stream_id);
+  grpc_chttp2_stream_parsing *stream_parsing =
+      transport_parsing->incoming_stream = grpc_chttp2_parsing_lookup_stream(
+          transport_parsing, transport_parsing->incoming_stream_id);
  if (!transport_parsing->incoming_stream) {
    return init_skip_frame_parser(exec_ctx, transport_parsing, 0);
  }
+  stream_parsing->stats.incoming.framing_bytes += 9;
  transport_parsing->parser = grpc_chttp2_rst_stream_parser_parse;
  transport_parsing->parser_data = &transport_parsing->simple.rst_stream;
  return ok;
@ -856,7 +873,8 @@ static int parse_frame_slice(grpc_exec_ctx *exec_ctx,
        gpr_slice_buffer_add(
            &transport_parsing->qbuf,
            grpc_chttp2_rst_stream_create(transport_parsing->incoming_stream_id,
-                                          GRPC_CHTTP2_PROTOCOL_ERROR));
+                                          GRPC_CHTTP2_PROTOCOL_ERROR,
+                                          &stream_parsing->stats.outgoing));
      }
      return 1;
    case GRPC_CHTTP2_CONNECTION_ERROR:
--- a/src/core/ext/transport/chttp2/transport/writing.c
+++ b/src/core/ext/transport/chttp2/transport/writing.c
@ -161,8 +161,10 @@ int grpc_chttp2_unlocking_check_writes(
        transport_global->announce_incoming_window, UINT32_MAX);
    GRPC_CHTTP2_FLOW_DEBIT_TRANSPORT("write", transport_global,
                                     announce_incoming_window, announced);
-    gpr_slice_buffer_add(&transport_writing->outbuf,
-                         grpc_chttp2_window_update_create(0, announced));
+    grpc_transport_one_way_stats throwaway_stats;
+    gpr_slice_buffer_add(
+        &transport_writing->outbuf,
+        grpc_chttp2_window_update_create(0, announced, &throwaway_stats));
  }

  GPR_TIMER_END("grpc_chttp2_unlocking_check_writes", 0);
@ -205,7 +207,8 @@ static void finalize_outbuf(grpc_exec_ctx *exec_ctx,
    if (stream_writing->send_initial_metadata != NULL) {
      grpc_chttp2_encode_header(
          &transport_writing->hpack_compressor, stream_writing->id,
-          stream_writing->send_initial_metadata, 0, &transport_writing->outbuf);
+          stream_writing->send_initial_metadata, 0, &stream_writing->stats,
+          &transport_writing->outbuf);
      stream_writing->send_initial_metadata = NULL;
      stream_writing->sent_initial_metadata = 1;
    }
@ -216,7 +219,8 @@ static void finalize_outbuf(grpc_exec_ctx *exec_ctx,
      gpr_slice_buffer_add(
          &transport_writing->outbuf,
          grpc_chttp2_window_update_create(stream_writing->id,
-                                           stream_writing->announce_window));
+                                           stream_writing->announce_window,
+                                           &stream_writing->stats));
      GRPC_CHTTP2_FLOW_DEBIT_STREAM("write", transport_writing, stream_writing,
                                    announce_window, announce);
      stream_writing->announce_window = 0;
@ -255,7 +259,8 @@ static void finalize_outbuf(grpc_exec_ctx *exec_ctx,
                                stream_writing->send_trailing_metadata);
        grpc_chttp2_encode_data(
            stream_writing->id, &stream_writing->flow_controlled_buffer,
-            send_bytes, is_last_frame, &transport_writing->outbuf);
+            send_bytes, is_last_frame, &stream_writing->stats,
+            &transport_writing->outbuf);
        GRPC_CHTTP2_FLOW_DEBIT_STREAM("write", transport_writing,
                                      stream_writing, outgoing_window,
                                      send_bytes);
@ -281,19 +286,20 @@ static void finalize_outbuf(grpc_exec_ctx *exec_ctx,
        stream_writing->send_trailing_metadata != NULL) {
      if (grpc_metadata_batch_is_empty(
              stream_writing->send_trailing_metadata)) {
-        grpc_chttp2_encode_data(stream_writing->id,
-                                &stream_writing->flow_controlled_buffer, 0, 1,
-                                &transport_writing->outbuf);
+        grpc_chttp2_encode_data(
+            stream_writing->id, &stream_writing->flow_controlled_buffer, 0, 1,
+            &stream_writing->stats, &transport_writing->outbuf);
      } else {
-        grpc_chttp2_encode_header(&transport_writing->hpack_compressor,
-                                  stream_writing->id,
-                                  stream_writing->send_trailing_metadata, 1,
-                                  &transport_writing->outbuf);
+        grpc_chttp2_encode_header(
+            &transport_writing->hpack_compressor, stream_writing->id,
+            stream_writing->send_trailing_metadata, 1, &stream_writing->stats,
+            &transport_writing->outbuf);
      }
      if (!transport_writing->is_client && !stream_writing->read_closed) {
        gpr_slice_buffer_add(&transport_writing->outbuf,
                             grpc_chttp2_rst_stream_create(
-                                 stream_writing->id, GRPC_CHTTP2_NO_ERROR));
+                                 stream_writing->id, GRPC_CHTTP2_NO_ERROR,
+                                 &stream_writing->stats));
      }
      stream_writing->send_trailing_metadata = NULL;
      stream_writing->sent_trailing_metadata = 1;
@ -328,17 +334,21 @@ void grpc_chttp2_cleanup_writing(
      transport_global, transport_writing, &stream_global, &stream_writing)) {
    if (stream_writing->sent_initial_metadata) {
      grpc_chttp2_complete_closure_step(
-          exec_ctx, &stream_global->send_initial_metadata_finished, 1);
+          exec_ctx, stream_global,
+          &stream_global->send_initial_metadata_finished, 1);
    }
+    grpc_transport_move_one_way_stats(&stream_writing->stats,
+                                      &stream_global->stats.outgoing);
    if (stream_writing->sent_message) {
      GPR_ASSERT(stream_writing->send_message == NULL);
      grpc_chttp2_complete_closure_step(
-          exec_ctx, &stream_global->send_message_finished, 1);
+          exec_ctx, stream_global, &stream_global->send_message_finished, 1);
      stream_writing->sent_message = 0;
    }
    if (stream_writing->sent_trailing_metadata) {
      grpc_chttp2_complete_closure_step(
-          exec_ctx, &stream_global->send_trailing_metadata_finished, 1);
+          exec_ctx, stream_global,
+          &stream_global->send_trailing_metadata_finished, 1);
    }
    if (stream_writing->sent_trailing_metadata) {
      grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global,
--- a/src/core/lib/surface/call.c
+++ b/src/core/lib/surface/call.c
@ -174,6 +174,9 @@ struct grpc_call {
  /* Received call statuses from various sources */
  received_status status[STATUS_SOURCE_COUNT];

+  /* Call stats: only valid after trailing metadata received */
+  grpc_transport_stream_stats stats;
+
  /* Compression algorithm for the call */
  grpc_compression_algorithm compression_algorithm;
  /* Supported encodings (compression algorithms), a bitset */
@ -1371,6 +1374,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
        bctl->recv_final_op = 1;
        stream_op.recv_trailing_metadata =
            &call->metadata_batch[1 /* is_receiving */][1 /* is_trailing */];
+        stream_op.collect_stats = &call->stats;
        break;
      case GRPC_OP_RECV_CLOSE_ON_SERVER:
        /* Flag validation: currently allow no flags */
@ -1392,6 +1396,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx,
        bctl->recv_final_op = 1;
        stream_op.recv_trailing_metadata =
            &call->metadata_batch[1 /* is_receiving */][1 /* is_trailing */];
+        stream_op.collect_stats = &call->stats;
        break;
    }
  }
--- a/src/core/lib/transport/transport.c
+++ b/src/core/lib/transport/transport.c
@ -35,6 +35,7 @@
 #include <grpc/support/alloc.h>
 #include <grpc/support/atm.h>
 #include <grpc/support/log.h>
+#include <grpc/support/sync.h>
 #include "src/core/lib/transport/transport_impl.h"

 #ifdef GRPC_STREAM_REFCOUNT_DEBUG
@ -76,6 +77,24 @@ void grpc_stream_ref_init(grpc_stream_refcount *refcount, int initial_refs,
  grpc_closure_init(&refcount->destroy, cb, cb_arg);
 }

+static void move64(uint64_t *from, uint64_t *to) {
+  *to += *from;
+  *from = 0;
+}
+
+void grpc_transport_move_one_way_stats(grpc_transport_one_way_stats *from,
+                                       grpc_transport_one_way_stats *to) {
+  move64(&from->framing_bytes, &to->framing_bytes);
+  move64(&from->data_bytes, &to->data_bytes);
+  move64(&from->header_bytes, &to->header_bytes);
+}
+
+void grpc_transport_move_stats(grpc_transport_stream_stats *from,
+                               grpc_transport_stream_stats *to) {
+  grpc_transport_move_one_way_stats(&from->incoming, &to->incoming);
+  grpc_transport_move_one_way_stats(&from->outgoing, &to->outgoing);
+}
+
 size_t grpc_transport_stream_size(grpc_transport *transport) {
  return transport->vtable->sizeof_stream;
 }
--- a/src/core/lib/transport/transport.h
+++ b/src/core/lib/transport/transport.h
@ -78,6 +78,23 @@ void grpc_stream_unref(grpc_exec_ctx *exec_ctx, grpc_stream_refcount *refcount);
  grpc_stream_ref_init(rc, ir, cb, cb_arg)
 #endif

+typedef struct {
+  uint64_t framing_bytes;
+  uint64_t data_bytes;
+  uint64_t header_bytes;
+} grpc_transport_one_way_stats;
+
+typedef struct grpc_transport_stream_stats {
+  grpc_transport_one_way_stats incoming;
+  grpc_transport_one_way_stats outgoing;
+} grpc_transport_stream_stats;
+
+void grpc_transport_move_one_way_stats(grpc_transport_one_way_stats *from,
+                                       grpc_transport_one_way_stats *to);
+
+void grpc_transport_move_stats(grpc_transport_stream_stats *from,
+                               grpc_transport_stream_stats *to);
+
 /* Transport stream op: a set of operations to perform on a transport
   against a single stream */
 typedef struct grpc_transport_stream_op {
@ -104,6 +121,9 @@ typedef struct grpc_transport_stream_op {
   */
  grpc_metadata_batch *recv_trailing_metadata;

+  /** Collect any stats into provided buffer, zero internal stat counters */
+  grpc_transport_stream_stats *collect_stats;
+
  /** Should be enqueued when all requested operations (excluding recv_message
      and recv_initial_metadata which have their own closures) in a given batch
      have been completed. */
--- a/test/core/internal_api_canaries/iomgr.c
+++ b/test/core/internal_api_canaries/iomgr.c
@ -0,0 +1,115 @@
+/*
+ *
+ * Copyright 2015-2016, 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/iomgr/iomgr.h"
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/iomgr/endpoint.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/iomgr/executor.h"
+
+/*******************************************************************************
+ * NOTE: If this test fails to compile, then the api changes are likely to cause
+ *       merge failures downstream. Please pay special attention to reviewing
+ *       these changes, and solicit help as appropriate when merging downstream.
+ *
+ * This test is NOT expected to be run directly.
+ ******************************************************************************/
+
+static void test_code(void) {
+  /* iomgr.h */
+  grpc_iomgr_init();
+  grpc_iomgr_shutdown();
+
+  /* closure.h */
+  grpc_closure closure;
+  closure.cb = NULL;
+  closure.cb_arg = NULL;
+  closure.final_data = 0;
+
+  grpc_closure_list closure_list = GRPC_CLOSURE_LIST_INIT;
+  closure_list.head = NULL;
+  closure_list.tail = NULL;
+
+  grpc_closure_init(&closure, NULL, NULL);
+
+  grpc_closure_create(NULL, NULL);
+
+  grpc_closure_list_move(NULL, NULL);
+  grpc_closure_list_add(NULL, NULL, true);
+  bool x = grpc_closure_list_empty(closure_list);
+  grpc_closure_next(&closure);
+
+  /* exec_ctx.h */
+  grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
+  grpc_exec_ctx_flush(&exec_ctx);
+  grpc_exec_ctx_finish(&exec_ctx);
+  grpc_exec_ctx_enqueue(&exec_ctx, &closure, x, NULL);
+  grpc_exec_ctx_enqueue_list(&exec_ctx, &closure_list, NULL);
+
+  /* endpoint.h */
+  grpc_endpoint endpoint;
+  grpc_endpoint_vtable vtable = {
+      grpc_endpoint_read,           grpc_endpoint_write,
+      grpc_endpoint_add_to_pollset, grpc_endpoint_add_to_pollset_set,
+      grpc_endpoint_shutdown,       grpc_endpoint_destroy,
+      grpc_endpoint_get_peer};
+  endpoint.vtable = &vtable;
+
+  grpc_endpoint_read(&exec_ctx, &endpoint, NULL, NULL);
+  grpc_endpoint_get_peer(&endpoint);
+  grpc_endpoint_write(&exec_ctx, &endpoint, NULL, NULL);
+  grpc_endpoint_shutdown(&exec_ctx, &endpoint);
+  grpc_endpoint_destroy(&exec_ctx, &endpoint);
+  grpc_endpoint_add_to_pollset(&exec_ctx, &endpoint, NULL);
+  grpc_endpoint_add_to_pollset_set(&exec_ctx, &endpoint, NULL);
+
+  /* executor.h */
+  grpc_executor_init();
+  grpc_executor_enqueue(&closure, x);
+  grpc_executor_shutdown();
+
+  /* pollset.h */
+  grpc_pollset_size();
+  grpc_pollset_init(NULL, NULL);
+  grpc_pollset_shutdown(NULL, NULL, NULL);
+  grpc_pollset_reset(NULL);
+  grpc_pollset_destroy(NULL);
+  grpc_pollset_work(NULL, NULL, NULL, gpr_now(GPR_CLOCK_REALTIME),
+                    gpr_now(GPR_CLOCK_MONOTONIC));
+  grpc_pollset_kick(NULL, NULL);
+}
+
+int main(void) {
+  if (false) test_code();
+  return 0;
+}
--- a/test/core/internal_api_canaries/support.c
+++ b/test/core/internal_api_canaries/support.c
@ -0,0 +1,58 @@
+/*
+ *
+ * Copyright 2015-2016, 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.
+ *
+ */
+
+/*******************************************************************************
+ * NOTE: If this test fails to compile, then the api changes are likely to cause
+ *       merge failures downstream. Please pay special attention to reviewing
+ *       these changes, and solicit help as appropriate when merging downstream.
+ *
+ * This test is NOT expected to be run directly.
+ ******************************************************************************/
+
+#include "src/core/lib/support/env.h"
+#include "src/core/lib/support/load_file.h"
+#include "src/core/lib/support/tmpfile.h"
+
+static void test_code(void) {
+  /* env.h */
+  gpr_set_env("abc", gpr_getenv("xyz"));
+  /* load_file.h */
+  gpr_load_file("abc", 1, NULL);
+  /* tmpfile.h */
+  fclose(gpr_tmpfile("foo", NULL));
+}
+
+int main(void) {
+  if (false) test_code();
+  return 0;
+}
--- a/test/core/internal_api_canaries/transport.c
+++ b/test/core/internal_api_canaries/transport.c
@ -0,0 +1,81 @@
+/*
+ *
+ * Copyright 2015-2016, 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.
+ *
+ */
+
+/*******************************************************************************
+ * NOTE: If this test fails to compile, then the api changes are likely to cause
+ *       merge failures downstream. Please pay special attention to reviewing
+ *       these changes, and solicit help as appropriate when merging downstream.
+ *
+ * This test is NOT expected to be run directly.
+ ******************************************************************************/
+
+#include "src/core/lib/transport/transport.h"
+#include "src/core/lib/transport/transport_impl.h"
+
+static void test_code(void) {
+  /* transport_impl.h */
+  grpc_transport transport;
+  grpc_transport_vtable vtable = {12345,
+                                  grpc_transport_init_stream,
+                                  grpc_transport_set_pollset,
+                                  grpc_transport_perform_stream_op,
+                                  grpc_transport_perform_op,
+                                  grpc_transport_destroy_stream,
+                                  grpc_transport_destroy,
+                                  grpc_transport_get_peer};
+  transport.vtable = &vtable;
+
+  /* transport.h */
+  GRPC_STREAM_REF_INIT(NULL, 0, NULL, NULL, "xyz");
+  GPR_ASSERT(0 == grpc_transport_stream_size(NULL));
+  GPR_ASSERT(grpc_transport_init_stream(&transport, NULL, NULL, NULL, NULL));
+  grpc_transport_set_pollset(&transport, NULL, NULL, NULL);
+  grpc_transport_destroy_stream(&transport, NULL, NULL);
+  grpc_transport_stream_op_finish_with_failure(NULL, NULL);
+  grpc_transport_stream_op_add_cancellation(NULL, GRPC_STATUS_UNAVAILABLE);
+  grpc_transport_stream_op_add_close(NULL, GRPC_STATUS_UNAVAILABLE,
+                                     grpc_transport_op_string(NULL));
+  grpc_transport_perform_stream_op(&transport, NULL, NULL, NULL);
+  grpc_transport_perform_op(&transport, NULL, NULL);
+  grpc_transport_ping(&transport, NULL);
+  grpc_transport_goaway(&transport, GRPC_STATUS_UNAVAILABLE,
+                        gpr_slice_malloc(0));
+  grpc_transport_close(&transport);
+  grpc_transport_destroy(&transport, NULL);
+  GPR_ASSERT("xyz" == grpc_transport_get_peer(&transport, NULL));
+}
+
+int main(void) {
+  if (false) test_code();
+  return 0;
+}
--- a/test/core/transport/chttp2/hpack_encoder_test.c
+++ b/test/core/transport/chttp2/hpack_encoder_test.c
@ -34,10 +34,12 @@
 #include "src/core/ext/transport/chttp2/transport/hpack_encoder.h"

 #include <stdio.h>
+#include <string.h>

 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include <grpc/support/string_util.h>
+
 #include "src/core/ext/transport/chttp2/transport/hpack_parser.h"
 #include "src/core/lib/support/string.h"
 #include "src/core/lib/transport/metadata.h"
@ -93,7 +95,10 @@ static void verify(size_t window_available, int eof, size_t expect_window_used,

  gpr_slice_buffer_init(&output);

-  grpc_chttp2_encode_header(&g_compressor, 0xdeadbeef, &b, eof, &output);
+  grpc_transport_one_way_stats stats;
+  memset(&stats, 0, sizeof(stats));
+  grpc_chttp2_encode_header(&g_compressor, 0xdeadbeef, &b, eof, &stats,
+                            &output);
  merged = grpc_slice_merge(output.slices, output.count);
  gpr_slice_buffer_destroy(&output);
  grpc_metadata_batch_destroy(&b);
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@ -1026,6 +1026,54 @@
    "third_party": false, 
    "type": "target"
  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "language": "c", 
+    "name": "internal_api_canary_iomgr_test", 
+    "src": [
+      "test/core/internal_api_canaries/iomgr.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "language": "c", 
+    "name": "internal_api_canary_support_test", 
+    "src": [
+      "test/core/internal_api_canaries/iomgr.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "language": "c", 
+    "name": "internal_api_canary_transport_test", 
+    "src": [
+      "test/core/internal_api_canaries/iomgr.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
  {
    "deps": [
      "gpr", 
--- a/vsprojects/buildtests_c.sln
+++ b/vsprojects/buildtests_c.sln
@ -696,6 +696,39 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "init_test", "vcxproj\test\i
 		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "internal_api_canary_iomgr_test", "vcxproj\test\internal_api_canary_iomgr_test\internal_api_canary_iomgr_test.vcxproj", "{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "internal_api_canary_support_test", "vcxproj\test\internal_api_canary_support_test\internal_api_canary_support_test.vcxproj", "{D53575C6-713C-E6E3-FD74-E65F20916498}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "internal_api_canary_transport_test", "vcxproj\test\internal_api_canary_transport_test\internal_api_canary_transport_test.vcxproj", "{ED24E700-964E-B426-6A6A-1944E2EF7BCB}"
+	ProjectSection(myProperties) = preProject
+        	lib = "False"
+	EndProjectSection
+	ProjectSection(ProjectDependencies) = postProject
+		{17BCAFC0-5FDC-4C94-AEB9-95F3E220614B} = {17BCAFC0-5FDC-4C94-AEB9-95F3E220614B}
+		{29D16885-7228-4C31-81ED-5F9187C7F2A9} = {29D16885-7228-4C31-81ED-5F9187C7F2A9}
+		{EAB0A629-17A9-44DB-B5FF-E91A721FE037} = {EAB0A629-17A9-44DB-B5FF-E91A721FE037}
+		{B23D3D1A-9438-4EDA-BEB6-9A0A03D17792} = {B23D3D1A-9438-4EDA-BEB6-9A0A03D17792}
+	EndProjectSection
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "invalid_call_argument_test", "vcxproj\test\invalid_call_argument_test\invalid_call_argument_test.vcxproj", "{C32CA8A3-58E6-8EB9-B72F-C295547D36A6}"
 	ProjectSection(myProperties) = preProject
        	lib = "False"
@ -2453,6 +2486,54 @@ Global
 		{117CA7AD-C42B-9217-6C95-42A801777BC5}.Release-DLL|Win32.Build.0 = Release|Win32
 		{117CA7AD-C42B-9217-6C95-42A801777BC5}.Release-DLL|x64.ActiveCfg = Release|x64
 		{117CA7AD-C42B-9217-6C95-42A801777BC5}.Release-DLL|x64.Build.0 = Release|x64
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Debug|Win32.ActiveCfg = Debug|Win32
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Debug|x64.ActiveCfg = Debug|x64
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Release|Win32.ActiveCfg = Release|Win32
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Release|x64.ActiveCfg = Release|x64
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Debug|Win32.Build.0 = Debug|Win32
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Debug|x64.Build.0 = Debug|x64
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Release|Win32.Build.0 = Release|Win32
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Release|x64.Build.0 = Release|x64
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Debug-DLL|x64.Build.0 = Debug|x64
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Release-DLL|Win32.Build.0 = Release|Win32
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Release-DLL|x64.ActiveCfg = Release|x64
+		{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}.Release-DLL|x64.Build.0 = Release|x64
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Debug|Win32.ActiveCfg = Debug|Win32
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Debug|x64.ActiveCfg = Debug|x64
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Release|Win32.ActiveCfg = Release|Win32
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Release|x64.ActiveCfg = Release|x64
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Debug|Win32.Build.0 = Debug|Win32
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Debug|x64.Build.0 = Debug|x64
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Release|Win32.Build.0 = Release|Win32
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Release|x64.Build.0 = Release|x64
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Debug-DLL|x64.Build.0 = Debug|x64
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Release-DLL|Win32.Build.0 = Release|Win32
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Release-DLL|x64.ActiveCfg = Release|x64
+		{D53575C6-713C-E6E3-FD74-E65F20916498}.Release-DLL|x64.Build.0 = Release|x64
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Debug|Win32.ActiveCfg = Debug|Win32
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Debug|x64.ActiveCfg = Debug|x64
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Release|Win32.ActiveCfg = Release|Win32
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Release|x64.ActiveCfg = Release|x64
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Debug|Win32.Build.0 = Debug|Win32
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Debug|x64.Build.0 = Debug|x64
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Release|Win32.Build.0 = Release|Win32
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Release|x64.Build.0 = Release|x64
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Debug-DLL|Win32.ActiveCfg = Debug|Win32
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Debug-DLL|Win32.Build.0 = Debug|Win32
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Debug-DLL|x64.ActiveCfg = Debug|x64
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Debug-DLL|x64.Build.0 = Debug|x64
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Release-DLL|Win32.ActiveCfg = Release|Win32
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Release-DLL|Win32.Build.0 = Release|Win32
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Release-DLL|x64.ActiveCfg = Release|x64
+		{ED24E700-964E-B426-6A6A-1944E2EF7BCB}.Release-DLL|x64.Build.0 = Release|x64
 		{C32CA8A3-58E6-8EB9-B72F-C295547D36A6}.Debug|Win32.ActiveCfg = Debug|Win32
 		{C32CA8A3-58E6-8EB9-B72F-C295547D36A6}.Debug|x64.ActiveCfg = Debug|x64
 		{C32CA8A3-58E6-8EB9-B72F-C295547D36A6}.Release|Win32.ActiveCfg = Release|Win32
--- a/vsprojects/vcxproj/test/internal_api_canary_iomgr_test/internal_api_canary_iomgr_test.vcxproj
+++ b/vsprojects/vcxproj/test/internal_api_canary_iomgr_test/internal_api_canary_iomgr_test.vcxproj
@ -0,0 +1,199 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\grpc.dependencies.openssl.props" Condition="Exists('$(SolutionDir)\..\vsprojects\packages\grpc.dependencies.openssl.1.0.204.1\build\native\1.0.204.1.props')" />
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{28AE726B-1BFB-202B-48D2-41AF9D09B9EA}</ProjectGuid>
+    <IgnoreWarnIntDirInTempDetected>true</IgnoreWarnIntDirInTempDetected>
+    <IntDir>$(SolutionDir)IntDir\$(MSBuildProjectName)\</IntDir>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '10.0'" Label="Configuration">
+    <PlatformToolset>v100</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '11.0'" Label="Configuration">
+    <PlatformToolset>v110</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '12.0'" Label="Configuration">
+    <PlatformToolset>v120</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(VisualStudioVersion)' == '14.0'" Label="Configuration">
+    <PlatformToolset>v140</PlatformToolset>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
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--- a/vsprojects/vcxproj/test/internal_api_canary_iomgr_test/internal_api_canary_iomgr_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/internal_api_canary_iomgr_test/internal_api_canary_iomgr_test.vcxproj.filters
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--- a/vsprojects/vcxproj/test/internal_api_canary_support_test/internal_api_canary_support_test.vcxproj
+++ b/vsprojects/vcxproj/test/internal_api_canary_support_test/internal_api_canary_support_test.vcxproj
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--- a/vsprojects/vcxproj/test/internal_api_canary_transport_test/internal_api_canary_transport_test.vcxproj
+++ b/vsprojects/vcxproj/test/internal_api_canary_transport_test/internal_api_canary_transport_test.vcxproj
@ -0,0 +1,199 @@
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--- a/vsprojects/vcxproj/test/internal_api_canary_transport_test/internal_api_canary_transport_test.vcxproj.filters
+++ b/vsprojects/vcxproj/test/internal_api_canary_transport_test/internal_api_canary_transport_test.vcxproj.filters
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