diff --git a/include/webservices.h b/include/webservices.h
index e35e3896ebc..c227a17ef81 100644
--- a/include/webservices.h
+++ b/include/webservices.h
@@ -493,6 +493,11 @@ typedef struct _WS_STRING {
     WCHAR *chars;
 } WS_STRING;
 
+typedef struct _WS_UNIQUE_ID {
+    WS_STRING uri;
+    GUID guid;
+} WS_UNIQUE_ID;
+
 typedef enum {
     WS_XML_NODE_TYPE_ELEMENT     = 1,
     WS_XML_NODE_TYPE_TEXT        = 2,
@@ -906,6 +911,11 @@ struct _WS_HTTP_SSL_BINDING_TEMPLATE {
     WS_SSL_TRANSPORT_SECURITY_BINDING_TEMPLATE sslTransportSecurityBinding;
 };
 
+enum {
+    WS_MUST_UNDERSTAND_HEADER_ATTRIBUTE = 0x1,
+    WS_RELAY_HEADER_ATTRIBUTE           = 0x2
+};
+
 typedef enum {
     WS_ADDRESSING_VERSION_0_9       = 1,
     WS_ADDRESSING_VERSION_1_0       = 2,
@@ -970,6 +980,16 @@ typedef enum {
     WS_FAULT_MESSAGE
 } WS_MESSAGE_INITIALIZATION;
 
+typedef enum {
+    WS_ACTION_HEADER        = 1,
+    WS_TO_HEADER            = 2,
+    WS_MESSAGE_ID_HEADER    = 3,
+    WS_RELATES_TO_HEADER    = 4,
+    WS_FROM_HEADER          = 5,
+    WS_REPLY_TO_HEADER      = 6,
+    WS_FAULT_TO_HEADER      = 7
+} WS_HEADER_TYPE;
+
 typedef enum {
     WS_DNS_ENDPOINT_IDENTITY_TYPE       = 1,
     WS_UPN_ENDPOINT_IDENTITY_TYPE       = 2,
@@ -1401,8 +1421,10 @@ HRESULT WINAPI WsReceiveMessage(WS_CHANNEL*, WS_MESSAGE*, const WS_MESSAGE_DESCR
                                 WS_RECEIVE_OPTION, WS_READ_OPTION, WS_HEAP*, void*, ULONG, ULONG*,
                                 const WS_ASYNC_CONTEXT*, WS_ERROR*);
 HRESULT WINAPI WsRemoveNode(const WS_XML_NODE_POSITION*, WS_ERROR*);
+HRESULT WINAPI WsResetChannel(WS_CHANNEL*, WS_ERROR*);
 HRESULT WINAPI WsResetError(WS_ERROR*);
 HRESULT WINAPI WsResetHeap(WS_HEAP*, WS_ERROR*);
+HRESULT WINAPI WsResetMessage(WS_MESSAGE*, WS_ERROR*);
 HRESULT WINAPI WsRequestReply(WS_CHANNEL*, WS_MESSAGE*, const WS_MESSAGE_DESCRIPTION*, WS_WRITE_OPTION,
                               const void*, ULONG, WS_MESSAGE*, const WS_MESSAGE_DESCRIPTION*,
                               WS_READ_OPTION, WS_HEAP*, void*, ULONG, const WS_ASYNC_CONTEXT*, WS_ERROR*);
@@ -1413,6 +1435,8 @@ HRESULT WINAPI WsSendReplyMessage(WS_CHANNEL*, WS_MESSAGE*, const WS_MESSAGE_DES
                                   const WS_ASYNC_CONTEXT*, WS_ERROR*);
 HRESULT WINAPI WsSetChannelProperty(WS_CHANNEL*, WS_CHANNEL_PROPERTY_ID, const void*, ULONG, WS_ERROR*);
 HRESULT WINAPI WsSetErrorProperty(WS_ERROR*, WS_ERROR_PROPERTY_ID, const void*, ULONG);
+HRESULT WINAPI WsSetHeader(WS_MESSAGE*, WS_HEADER_TYPE, WS_TYPE, WS_WRITE_OPTION, const void*, ULONG,
+                           WS_ERROR*);
 HRESULT WINAPI WsSetInput(WS_XML_READER*, const WS_XML_READER_ENCODING*, const WS_XML_READER_INPUT*,
                           const WS_XML_READER_PROPERTY*, ULONG, WS_ERROR*);
 HRESULT WINAPI WsSetInputToBuffer(WS_XML_READER*, WS_XML_BUFFER*, const WS_XML_READER_PROPERTY*,