diff --git a/a8/websocketsession.cc b/a8/websocketsession.cc
index 65bb4a6..1cc582f 100644
--- a/a8/websocketsession.cc
+++ b/a8/websocketsession.cc
@@ -33,6 +33,7 @@ const unsigned char WEBSOCKET_PAYLOAD_LEN_UINT16    = 126;
 const unsigned char WEBSOCKET_PAYLOAD_LEN_UINT64    = 127;
 
 const char* WEB_SOCKET_KEY = "Sec-WebSocket-Key: ";
+const char* WEB_SOCKET_KEY2 = "Sec-Websocket-Key: ";
 
 namespace a8
 {
@@ -98,8 +99,7 @@ namespace a8
         if (!pend) {
             return;
         }
-        char* p1 = strstr(buf + offset, WEB_SOCKET_KEY);
-        if (p1) {
+        if (strstr(buf + offset, WEB_SOCKET_KEY) || strstr(buf + offset, WEB_SOCKET_KEY2)) {
             ProcessWsHandShake(buf, offset, buflen);
         } else {
             ProcessHttpHandShake(buf, offset, buflen);
@@ -113,8 +113,13 @@ namespace a8
             return;
         }
         std::string server_key;
+        const char* key = WEB_SOCKET_KEY;
         {
             char* p1 = strstr(buf + offset, WEB_SOCKET_KEY);
+            if (!p1) {
+                p1 = strstr(buf + offset, WEB_SOCKET_KEY2);
+                key = WEB_SOCKET_KEY2;
+            }
             if (p1) {
                 p1 += strlen(WEB_SOCKET_KEY);
                 char* p2 = strstr(p1 , "\r\n");
@@ -131,7 +136,7 @@ namespace a8
         std::string response = "HTTP/1.1 101 Web Socket Protocol Handshake\r\n"
             "Upgrade: websocket\r\n"
             "Connection: Upgrade\r\n"
-            "Sec-WebSocket-Accept: " + hash_data + "\r\n" +
+            + key + hash_data + "\r\n" +
             "\r\n";
         SendBuff(response.data(), response.size());
         handshook_ = true;