diff --git a/src/Http/HttpConst.cpp b/src/Http/HttpConst.cpp
index 3e4116a7..0f7409ac 100644
--- a/src/Http/HttpConst.cpp
+++ b/src/Http/HttpConst.cpp
@@ -18,7 +18,7 @@ using namespace toolkit;
 
 namespace mediakit{
 
-const char *getHttpStatusMessage(int status) {
+const char *HttpConst::getHttpStatusMessage(int status) {
     switch (status) {
         case 100: return "Continue";
         case 101: return "Switching Protocol";
@@ -196,7 +196,7 @@ static const char *s_mime_src[][2] = {
         {"avi", "video/x-msvideo"},
 };
 
-const string &getHttpContentType(const char *name) {
+const string& HttpConst::getHttpContentType(const char *name) {
     const char *dot;
     dot = strrchr(name, '.');
     static StrCaseMap mapType;
diff --git a/src/Http/HttpConst.h b/src/Http/HttpConst.h
index b68f8be5..bced1a7e 100644
--- a/src/Http/HttpConst.h
+++ b/src/Http/HttpConst.h
@@ -15,19 +15,25 @@
 
 namespace mediakit{
 
-/**
- * 根据http错误代码获取字符说明
- * @param status 譬如404
- * @return 错误代码字符说明，譬如Not Found
- */
-const char *getHttpStatusMessage(int status);
+class HttpConst {
+public:
+    HttpConst() = delete;
+    ~HttpConst() = delete;
 
-/**
- * 根据文件后缀返回http mime
- * @param name 文件后缀，譬如html
- * @return mime值，譬如text/html
- */
-const std::string &getHttpContentType(const char *name);
+    /**
+     * 根据http错误代码获取字符说明
+     * @param status 譬如404
+     * @return 错误代码字符说明，譬如Not Found
+     */
+    static const char *getHttpStatusMessage(int status);
+
+    /**
+     * 根据文件后缀返回http mime
+     * @param name 文件后缀，譬如html
+     * @return mime值，譬如text/html
+     */
+    static const std::string &getHttpContentType(const char *name);
+};
 
 }//mediakit
 
diff --git a/src/Http/HttpFileManager.cpp b/src/Http/HttpFileManager.cpp
index 92f349fc..468acdb7 100644
--- a/src/Http/HttpFileManager.cpp
+++ b/src/Http/HttpFileManager.cpp
@@ -46,7 +46,7 @@ struct HttpCookieAttachment {
 };
 
 const string &HttpFileManager::getContentType(const char *name) {
-    return getHttpContentType(name);
+    return HttpConst::getHttpContentType(name);
 }
 
 static string searchIndexFile(const string &dir){
diff --git a/src/Http/HttpSession.cpp b/src/Http/HttpSession.cpp
index 5a5aa113..347359ed 100644
--- a/src/Http/HttpSession.cpp
+++ b/src/Http/HttpSession.cpp
@@ -75,9 +75,6 @@ ssize_t HttpSession::onRecvHeader(const char *header, size_t len) {
         return 0;
     }
 
-    // 跨域
-    _origin = _parser["Origin"];
-
     //默认后面数据不是content而是header
     ssize_t content_len = 0;
     (this->*(it->second))(content_len);
@@ -507,15 +504,6 @@ private:
     }
 };
 
-static const string kDate = "Date";
-static const string kServer = "Server";
-static const string kConnection = "Connection";
-static const string kKeepAlive = "Keep-Alive";
-static const string kContentType = "Content-Type";
-static const string kContentLength = "Content-Length";
-static const string kAccessControlAllowOrigin = "Access-Control-Allow-Origin";
-static const string kAccessControlAllowCredentials = "Access-Control-Allow-Credentials";
-
 void HttpSession::sendResponse(int code,
                                bool bClose,
                                const char *pcContentType,
@@ -541,25 +529,19 @@ void HttpSession::sendResponse(int code,
     }
 
     HttpSession::KeyValue &headerOut = const_cast<HttpSession::KeyValue &>(header);
-    headerOut.emplace(kDate, dateStr());
-    headerOut.emplace(kServer, kServerName);
-    headerOut.emplace(kConnection, bClose ? "close" : "keep-alive");
+    headerOut.emplace("Date", dateStr());
+    headerOut.emplace("Server", kServerName);
+    headerOut.emplace("Connection", bClose ? "close" : "keep-alive");
     if (!bClose) {
         string keepAliveString = "timeout=";
         keepAliveString += to_string(keepAliveSec);
         keepAliveString += ", max=100";
-        headerOut.emplace(kKeepAlive, std::move(keepAliveString));
-    }
-
-    if (!_origin.empty()) {
-        // 设置跨域
-        headerOut.emplace(kAccessControlAllowOrigin, _origin);
-        headerOut.emplace(kAccessControlAllowCredentials, "true");
+        headerOut.emplace("Keep-Alive", std::move(keepAliveString));
     }
 
     if (!no_content_length && size >= 0 && (size_t)size < SIZE_MAX) {
         // 文件长度为固定值,且不是http-flv强制设置Content-Length
-        headerOut[kContentLength] = to_string(size);
+        headerOut["Content-Length"] = to_string(size);
     }
 
     if (size && !pcContentType) {
@@ -572,7 +554,7 @@ void HttpSession::sendResponse(int code,
         string strContentType = pcContentType;
         strContentType += "; charset=";
         strContentType += charSet;
-        headerOut.emplace(kContentType, std::move(strContentType));
+        headerOut.emplace("Content-Type", std::move(strContentType));
     }
 
     // 发送http头
@@ -581,7 +563,7 @@ void HttpSession::sendResponse(int code,
     str += "HTTP/1.1 ";
     str += to_string(code);
     str += ' ';
-    str += getHttpStatusMessage(code);
+    str += HttpConst::getHttpStatusMessage(code);
     str += "\r\n";
     for (auto &pr : header) {
         str += pr.first;
diff --git a/src/Http/HttpSession.h b/src/Http/HttpSession.h
index 68b2030d..59255fb8 100644
--- a/src/Http/HttpSession.h
+++ b/src/Http/HttpSession.h
@@ -132,7 +132,6 @@ private:
     bool _live_over_websocket = false;
     //消耗的总流量
     uint64_t _total_bytes_usage = 0;
-    std::string _origin;
     Parser _parser;
     toolkit::Ticker _ticker;
     TSMediaSource::RingType::RingReader::Ptr _ts_reader;