private the srs_vhost_resolve

@@ -41,6 +41,46 @@ using namespace std;
 #include <srs_rtmp_stack.hpp>
 #include <srs_protocol_io.hpp>
 
+/**
+ * resolve the vhost in query string
+ * @pram vhost, update the vhost if query contains the vhost.
+ * @param app, may contains the vhost in query string format:
+ *   app?vhost=request_vhost
+ *   app...vhost...request_vhost
+ * @param param, the query, for example, ?vhost=xxx
+ */
+void srs_vhost_resolve(string& vhost, string& app, string& param)
+{
+    // get original param
+    size_t pos = 0;
+    if ((pos = app.find("?")) != std::string::npos) {
+        param = app.substr(pos);
+    }
+    
+    // filter tcUrl
+    app = srs_string_replace(app, ",", "?");
+    app = srs_string_replace(app, "...", "?");
+    app = srs_string_replace(app, "&&", "?");
+    app = srs_string_replace(app, "=", "?");
+    
+    if ((pos = app.find("?")) != std::string::npos) {
+        std::string query = app.substr(pos + 1);
+        app = app.substr(0, pos);
+        
+        if ((pos = query.find("vhost?")) != std::string::npos) {
+            query = query.substr(pos + 6);
+            if (!query.empty()) {
+                vhost = query;
+            }
+            if ((pos = vhost.find("?")) != std::string::npos) {
+                vhost = vhost.substr(0, pos);
+            }
+        }
+    }
+    
+    /* others */
+}
+
 void srs_discovery_tc_url(
     string tcUrl, 
     string& schema, string& host, string& vhost, 
@@ -77,38 +117,6 @@ void srs_discovery_tc_url(
     srs_vhost_resolve(vhost, app, param);
 }
 
-void srs_vhost_resolve(string& vhost, string& app, string& param)
-{
-    // get original param
-    size_t pos = 0;
-    if ((pos = app.find("?")) != std::string::npos) {
-        param = app.substr(pos);
-    }
-    
-    // filter tcUrl
-    app = srs_string_replace(app, ",", "?");
-    app = srs_string_replace(app, "...", "?");
-    app = srs_string_replace(app, "&&", "?");
-    app = srs_string_replace(app, "=", "?");
-    
-    if ((pos = app.find("?")) != std::string::npos) {
-        std::string query = app.substr(pos + 1);
-        app = app.substr(0, pos);
-        
-        if ((pos = query.find("vhost?")) != std::string::npos) {
-            query = query.substr(pos + 6);
-            if (!query.empty()) {
-                vhost = query;
-            }
-            if ((pos = vhost.find("?")) != std::string::npos) {
-                vhost = vhost.substr(0, pos);
-            }
-        }
-    }
-    
-    /* others */
-}
-
 void srs_random_generate(char* bytes, int size)
 {
     static bool _random_initialized = false;

@@ -63,18 +63,6 @@ extern void srs_discovery_tc_url(
 );
 
 /**
-* resolve the vhost in query string
-* @pram vhost, update the vhost if query contains the vhost.
-* @param app, may contains the vhost in query string format:
-*   app?vhost=request_vhost
-*   app...vhost...request_vhost
-* @param param, the query, for example, ?vhost=xxx
-*/ 
-extern void srs_vhost_resolve(
-    std::string& vhost, std::string& app, std::string& param
-);
-
-/**
 * generate ramdom data for handshake.
 */
 extern void srs_random_generate(char* bytes, int size);

@@ -424,39 +424,6 @@ VOID TEST(ProtocolHandshakeTest, BytesEqual)
 }
 
 /**
-* resolve vhost from tcUrl.
-*/
-VOID TEST(ProtocolUtilityTest, VhostResolve)
-{
-    std::string vhost = "vhost";
-    std::string app = "app";
-    std::string param;
-    srs_vhost_resolve(vhost, app, param);
-    EXPECT_STREQ("vhost", vhost.c_str());
-    EXPECT_STREQ("app", app.c_str());
-    
-    app = "app?vhost=changed";
-    srs_vhost_resolve(vhost, app, param);
-    EXPECT_STREQ("changed", vhost.c_str());
-    EXPECT_STREQ("app", app.c_str());
-    
-    app = "app?vhost=changed1&&query=true";
-    srs_vhost_resolve(vhost, app, param);
-    EXPECT_STREQ("changed1", vhost.c_str());
-    EXPECT_STREQ("app", app.c_str());
-    
-    app = "app?other=true&&vhost=changed2&&query=true";
-    srs_vhost_resolve(vhost, app, param);
-    EXPECT_STREQ("changed2", vhost.c_str());
-    EXPECT_STREQ("app", app.c_str());
-    
-    app = "app...other...true...vhost...changed3...query...true";
-    srs_vhost_resolve(vhost, app, param);
-    EXPECT_STREQ("changed3", vhost.c_str());
-    EXPECT_STREQ("app", app.c_str());
-}
-
-/**
 * discovery tcUrl to schema/vhost/host/port/app
 */
 VOID TEST(ProtocolUtilityTest, DiscoveryTcUrl)