add im_.*

cpp/im_msgid.proto

@@ -0,0 +1,8 @@
+package im;
+
+//消息id定义
+enum IMMessageId_e
+{
+    _IMSocketConnect = 1;
+    _IMSocketDisconnect = 2;
+}

cpp/im_proto.proto

@@ -0,0 +1,20 @@
+package im;
+
+//常量
+enum Constant_e
+{
+    MaxIMMsgId = 7;
+}
+
+message IMSocketConnect
+{
+    optional bool is_websocket = 1;
+    optional string host = 2;
+    optional string url = 3;
+    optional string query_str = 4;
+}
+
+message IMSocketDisconnect
+{
+
+}