5 files changed, 48 insertions, 8 deletions
diff --git a/include/grpc/grpc.h b/include/grpc/grpc.h
index 637f473b82..782923d599 100644
--- a/include/grpc/grpc.h
+++ b/include/grpc/grpc.h
@@ -118,6 +118,20 @@ typedef struct {
 #define GRPC_ARG_HTTP2_INITIAL_SEQUENCE_NUMBER \
   "grpc.http2.initial_sequence_number"
 
+/** Connectivity state of a channel. */
+typedef enum {
+  /** channel is idle */
+  GRPC_CHANNEL_IDLE,
+  /** channel is connecting */
+  GRPC_CHANNEL_CONNECTING,
+  /** channel is ready for work */
+  GRPC_CHANNEL_READY,
+  /** channel has seen a failure but expects to recover */
+  GRPC_CHANNEL_TRANSIENT_FAILURE,
+  /** channel has seen a failure that it cannot recover from */
+  GRPC_CHANNEL_FATAL_FAILURE
+} grpc_connectivity_state;
+
 /* Result of a grpc call. If the caller satisfies the prerequisites of a
    particular operation, the grpc_call_error returned will be GRPC_CALL_OK.
    Receiving any other value listed here is an indication of a bug in the
@@ -427,7 +441,7 @@ void grpc_channel_destroy(grpc_channel *channel);
    has been made. */
 
 /* Called by clients to cancel an RPC on the server.
-   Can be called multiple times, from any thread. 
+   Can be called multiple times, from any thread.
    THREAD-SAFETY grpc_call_cancel and grpc_call_cancel_with_status
    are thread-safe, and can be called at any point before grpc_call_destroy
    is called.*/
@@ -443,7 +457,7 @@ grpc_call_error grpc_call_cancel_with_status(grpc_call *call,
                                              grpc_status_code status,
                                              const char *description);
 
-/* Destroy a call. 
+/* Destroy a call.
    THREAD SAFETY: grpc_call_destroy is thread-compatible */
 void grpc_call_destroy(grpc_call *call);
 
diff --git a/include/grpc/support/atm_win32.h b/include/grpc/support/atm_win32.h
index dcba4d433d..da99021c24 100644
--- a/include/grpc/support/atm_win32.h
+++ b/include/grpc/support/atm_win32.h
@@ -37,8 +37,6 @@
 /* Win32 variant of atm_platform.h */
 #include <grpc/support/port_platform.h>
 
-#include <windows.h>
-
 typedef gpr_intptr gpr_atm;
 
 #define gpr_atm_full_barrier MemoryBarrier
diff --git a/include/grpc/support/log_win32.h b/include/grpc/support/log_win32.h
index ad0edcdb89..595a81a5af 100644
--- a/include/grpc/support/log_win32.h
+++ b/include/grpc/support/log_win32.h
@@ -34,8 +34,6 @@
 #ifndef GRPC_SUPPORT_LOG_WIN32_H
 #define GRPC_SUPPORT_LOG_WIN32_H
 
-#include <windows.h>
-
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/include/grpc/support/port_platform.h b/include/grpc/support/port_platform.h
index 4fbce9c8d9..d3cfee113d 100644
--- a/include/grpc/support/port_platform.h
+++ b/include/grpc/support/port_platform.h
@@ -34,6 +34,38 @@
 #ifndef GRPC_SUPPORT_PORT_PLATFORM_H
 #define GRPC_SUPPORT_PORT_PLATFORM_H
 
+/* Get windows.h included everywhere (we need it) */
+#if defined(_WIN64) || defined(WIN64) || defined(_WIN32) || defined(WIN32)
+#ifndef WIN32_LEAN_AND_MEAN
+#define GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED
+#define WIN32_LEAN_AND_MEAN
+#endif /* WIN32_LEAN_AND_MEAN */
+
+#ifndef NOMINMAX
+#define GRPC_NOMINMX_WAS_NOT_DEFINED
+#define NOMINMAX
+#endif /* NOMINMAX */
+
+#if defined(_WIN32_WINNT)
+#if _WIN32_WINNT < 0x0600
+#undef _WIN32_WINNT
+#define _WIN32_WINNT 0x0600
+#endif /* _WIN32_WINNT < 0x0600 */
+#endif /* defined(_WIN32_WINNT) */
+
+#include <windows.h>
+
+#ifdef GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED
+#undef GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED
+#undef WIN32_LEAN_AND_MEAN
+#endif /* GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED */
+
+#ifdef GRPC_NOMINMAX_WAS_NOT_DEFINED
+#undef GRPC_NOMINMAX_WAS_NOT_DEFINED
+#undef NOMINMAX
+#endif /* GRPC_WIN32_LEAN_AND_MEAN_WAS_NOT_DEFINED */
+#endif /* defined(_WIN64) || defined(WIN64) || defined(_WIN32) || defined(WIN32) */
+
 /* Override this file with one for your platform if you need to redefine
    things.  */
 
diff --git a/include/grpc/support/sync_win32.h b/include/grpc/support/sync_win32.h
index cb2a8663a0..66b9af9074 100644
--- a/include/grpc/support/sync_win32.h
+++ b/include/grpc/support/sync_win32.h
@@ -36,8 +36,6 @@
 
 #include <grpc/support/sync_generic.h>
 
-#include <windows.h>
-
 typedef struct {
   CRITICAL_SECTION cs; /* Not an SRWLock until Vista is unsupported */
   int locked;