add missing websocket plugin include file

include/websocket_plugin.h

+/*
+ * Copyright 2010-2011 self.disconnect
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if !defined(_MOD_WEBSOCKET_H_)
+#define _MOD_WEBSOCKET_H_
+
+#include <stdlib.h>
+
+#if defined(__cplusplus)
+extern "C"
+{
+#endif
+
+#if defined(_WIN32)
+#define EXPORT __declspec(dllexport)
+#define CALLBACK __stdcall
+#else
+#define EXPORT
+#define CALLBACK
+#endif
+
+#define MESSAGE_TYPE_INVALID  -1
+#define MESSAGE_TYPE_TEXT      0
+#define MESSAGE_TYPE_BINARY  128
+#define MESSAGE_TYPE_CLOSE   255
+#define MESSAGE_TYPE_PING    256
+#define MESSAGE_TYPE_PONG    257
+
+    struct _WebSocketServer;
+
+    typedef struct request_rec *(CALLBACK * WS_Request)
+                                (const struct _WebSocketServer *server);
+
+    typedef const char *(CALLBACK * WS_Header_Get)
+                        (const struct _WebSocketServer *server,
+                         const char *key);
+
+    typedef void (CALLBACK * WS_Header_Set)
+                 (const struct _WebSocketServer *server,
+                  const char *key,
+                  const char *value);
+
+    typedef size_t (CALLBACK * WS_Protocol_Count)
+                   (const struct _WebSocketServer *server);
+
+    typedef const char *(CALLBACK * WS_Protocol_Index)
+                        (const struct _WebSocketServer *server,
+                         const size_t index);
+
+    typedef void (CALLBACK * WS_Protocol_Set)
+                 (const struct _WebSocketServer *server,
+                  const char *protocol);
+
+    typedef size_t (CALLBACK * WS_Send)
+                   (const struct _WebSocketServer *server,
+                    const int type,
+                    const unsigned char *buffer,
+                    const size_t buffer_size);
+
+    typedef void (CALLBACK * WS_Close)
+                 (const struct _WebSocketServer *server);
+
+#define WEBSOCKET_SERVER_VERSION_1 1
+
+    typedef struct _WebSocketServer
+    {
+        unsigned int size;
+        unsigned int version;
+        struct _WebSocketState *state;
+        WS_Request request;
+        WS_Header_Get header_get;
+        WS_Header_Set header_set;
+        WS_Protocol_Count protocol_count;
+        WS_Protocol_Index protocol_index;
+        WS_Protocol_Set protocol_set;
+        WS_Send send;
+        WS_Close close;
+    } WebSocketServer;
+
+    struct _WebSocketPlugin;
+
+    typedef struct _WebSocketPlugin *(CALLBACK * WS_Init)
+                                     ();
+    typedef void (CALLBACK * WS_Destroy)
+                 (struct _WebSocketPlugin *plugin);
+
+    typedef void *(CALLBACK * WS_OnConnect)
+                  (const WebSocketServer *server); /* Returns plugin_private */
+
+    typedef size_t (CALLBACK * WS_OnMessage)
+                   (void *plugin_private,
+                    const WebSocketServer *server,
+                    const int type,
+                    unsigned char *buffer,
+                    const size_t buffer_size);
+
+    typedef void (CALLBACK * WS_OnDisconnect)
+                 (void *plugin_private,
+                  const WebSocketServer *server);
+
+#define WEBSOCKET_PLUGIN_VERSION_0 0
+
+  typedef struct _WebSocketPlugin
+  {
+      unsigned int size;
+      unsigned int version;
+      WS_Destroy destroy;
+      WS_OnConnect on_connect;
+      WS_OnMessage on_message;
+      WS_OnDisconnect on_disconnect;
+  } WebSocketPlugin;
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif                          /* _MOD_WEBSOCKET_H_ */