refine codes.

@@ -357,7 +357,57 @@ vector<string> srs_string_split(string str, string flag)
     
     while ((pos = s.find(flag)) != string::npos) {
         arr.push_back(s.substr(0, pos));
-        s = s.substr(pos + 1);
+        s = s.substr(pos + flag.length());
+    }
+    
+    if (!s.empty()) {
+        arr.push_back(s);
+    }
+    
+    return arr;
+}
+
+string srs_string_min_match(string str, vector<string> flags)
+{
+    string match;
+    
+    size_t min_pos = string::npos;
+    for (vector<string>::iterator it = flags.begin(); it != flags.end(); ++it) {
+        string flag = *it;
+        
+        size_t pos = str.find(flag);
+        if (pos == string::npos) {
+            continue;
+        }
+        
+        if (min_pos == string::npos || pos < min_pos) {
+            min_pos = pos;
+            match = flag;
+        }
+    }
+    
+    return match;
+}
+
+vector<string> srs_string_split(string str, vector<string> flags)
+{
+    vector<string> arr;
+    
+    size_t pos = string::npos;
+    string s = str;
+    
+    while (true) {
+        string flag = srs_string_min_match(s, flags);
+        if (flag.empty()) {
+            break;
+        }
+        
+        if ((pos = s.find(flag)) == string::npos) {
+            break;
+        }
+        
+        arr.push_back(s.substr(0, pos));
+        s = s.substr(pos + flag.length());
     }
     
     if (!s.empty()) {

@@ -90,6 +90,7 @@ extern bool srs_string_starts_with(std::string str, std::string flag0, std::stri
 extern bool srs_string_contains(std::string str, std::string flag);
 // split the string by flag to array.
 extern std::vector<std::string> srs_string_split(std::string str, std::string flag);
+extern std::vector<std::string> srs_string_split(std::string str, std::vector<std::string> flags);
 
 // create dir recursively
 extern int srs_create_dir_recursively(std::string dir);

@@ -2989,6 +2989,9 @@ int SrsHttpUri::initialize(string _url)
 {
     int ret = ERROR_SUCCESS;
     
+    port = 0;
+    schema = host = path = query = "";
+    
     url = _url;
     const char* purl = url.c_str();
     

@@ -630,6 +630,21 @@ SrsJsonAny* SrsJsonObject::ensure_property_integer(string name)
     return prop;
 }
 
+SrsJsonAny* SrsJsonObject::ensure_property_number(string name)
+{
+    SrsJsonAny* prop = get_property(name);
+    
+    if (!prop) {
+        return NULL;
+    }
+    
+    if (!prop->is_number()) {
+        return NULL;
+    }
+    
+    return prop;
+}
+
 SrsJsonAny* SrsJsonObject::ensure_property_boolean(string name)
 {
     SrsJsonAny* prop = get_property(name);

@@ -157,6 +157,7 @@ public:
     virtual SrsJsonAny* get_property(std::string name);
     virtual SrsJsonAny* ensure_property_string(std::string name);
     virtual SrsJsonAny* ensure_property_integer(std::string name);
+    virtual SrsJsonAny* ensure_property_number(std::string name);
     virtual SrsJsonAny* ensure_property_boolean(std::string name);
     virtual SrsJsonAny* ensure_property_object(std::string name);
     virtual SrsJsonAny* ensure_property_array(std::string name);