From d9e7943994b8bbd79b3785bfc4e2166c0652cf24 Mon Sep 17 00:00:00 2001
From: Jan Tattermusch <jtattermusch@google.com>
Date: Sun, 12 Jul 2015 01:27:30 -0700
Subject: [PATCH 1/2] remove chatty log messages on windows

---
 src/core/iomgr/iocp_windows.c |  1 -
 src/core/iomgr/tcp_windows.c  | 24 +++++++++++++++---------
 2 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/src/core/iomgr/iocp_windows.c b/src/core/iomgr/iocp_windows.c
index 0c62bfccd51..3d3a193d00d 100644
--- a/src/core/iomgr/iocp_windows.c
+++ b/src/core/iomgr/iocp_windows.c
@@ -127,7 +127,6 @@ static void iocp_loop(void *p) {
     grpc_maybe_call_delayed_callbacks(NULL, 1);
     do_iocp_work();
   }
-  gpr_log(GPR_DEBUG, "iocp_loop is done");
 
   gpr_event_set(&g_iocp_done, (void *)1);
 }
diff --git a/src/core/iomgr/tcp_windows.c b/src/core/iomgr/tcp_windows.c
index 15759c398a1..1bf81a73e0c 100644
--- a/src/core/iomgr/tcp_windows.c
+++ b/src/core/iomgr/tcp_windows.c
@@ -148,9 +148,11 @@ static void on_read(void *tcpp, int from_iocp) {
   GPR_ASSERT(tcp->socket->read_info.outstanding);
 
   if (socket->read_info.wsa_error != 0) {
-    char *utf8_message = gpr_format_message(info->wsa_error);
-    gpr_log(GPR_ERROR, "ReadFile overlapped error: %s", utf8_message);
-    gpr_free(utf8_message);
+    if (socket->read_info.wsa_error != WSAECONNRESET) {
+      char *utf8_message = gpr_format_message(info->wsa_error);
+      gpr_log(GPR_ERROR, "ReadFile overlapped error: %s", utf8_message);
+      gpr_free(utf8_message);
+    }
     status = GRPC_ENDPOINT_CB_ERROR;
   } else {
     if (info->bytes_transfered != 0) {
@@ -259,9 +261,11 @@ static void on_write(void *tcpp, int from_iocp) {
   GPR_ASSERT(tcp->socket->write_info.outstanding);
 
   if (info->wsa_error != 0) {
-    char *utf8_message = gpr_format_message(info->wsa_error);
-    gpr_log(GPR_ERROR, "WSASend overlapped error: %s", utf8_message);
-    gpr_free(utf8_message);
+    if (info->wsa_error != WSAECONNRESET) {
+      char *utf8_message = gpr_format_message(info->wsa_error);
+      gpr_log(GPR_ERROR, "WSASend overlapped error: %s", utf8_message);
+      gpr_free(utf8_message);
+    }
     status = GRPC_ENDPOINT_CB_ERROR;
   } else {
     GPR_ASSERT(info->bytes_transfered == tcp->write_slices.length);
@@ -325,9 +329,11 @@ static grpc_endpoint_write_status win_write(grpc_endpoint *ep,
       ret = GRPC_ENDPOINT_WRITE_DONE;
       GPR_ASSERT(bytes_sent == tcp->write_slices.length);
     } else {
-      char *utf8_message = gpr_format_message(info->wsa_error);
-      gpr_log(GPR_ERROR, "WSASend error: %s", utf8_message);
-      gpr_free(utf8_message);
+      if (socket->read_info.wsa_error != WSAECONNRESET) {
+        char *utf8_message = gpr_format_message(info->wsa_error);
+        gpr_log(GPR_ERROR, "WSASend error: %s", utf8_message);
+        gpr_free(utf8_message);
+      }
     }
     if (allocated) gpr_free(allocated);
     gpr_slice_buffer_reset_and_unref(&tcp->write_slices);

From 80e5f044a4f7ee5e1b81a3da8f930d216ca01849 Mon Sep 17 00:00:00 2001
From: Jan Tattermusch <jtattermusch@google.com>
Date: Sun, 12 Jul 2015 01:28:05 -0700
Subject: [PATCH 2/2] zero-out channel after creation

---
 src/core/surface/channel.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/core/surface/channel.c b/src/core/surface/channel.c
index eeae3b507cc..b7826d4dfc9 100644
--- a/src/core/surface/channel.c
+++ b/src/core/surface/channel.c
@@ -91,6 +91,7 @@ grpc_channel *grpc_channel_create_from_filters(
   size_t size =
       sizeof(grpc_channel) + grpc_channel_stack_size(filters, num_filters);
   grpc_channel *channel = gpr_malloc(size);
+  memset(channel, 0, sizeof(*channel));
   GPR_ASSERT(grpc_is_initialized() && "call grpc_init()");
   channel->is_client = is_client;
   /* decremented by grpc_channel_destroy */