diff --git a/srt/Packet.cpp b/srt/Packet.cpp
index cfcb6531..0d1c2647 100644
--- a/srt/Packet.cpp
+++ b/srt/Packet.cpp
@@ -230,7 +230,7 @@ std::string HandshakePacket::dump(){
     printer <<"flag:"<< (int)f<<"\r\n";
     printer <<"control_type:"<< (int)control_type<<"\r\n";
     printer <<"sub_type:"<< (int)sub_type<<"\r\n";
-    printer <<"type_specific_info:"<< type_specific_info[0]<<":"<<type_specific_info[1]<<":"<<type_specific_info[2]<<":"<<type_specific_info[3]<<"\r\n";
+    printer <<"type_specific_info:"<< (int)type_specific_info[0]<<":"<<(int)type_specific_info[1]<<":"<<(int)type_specific_info[2]<<":"<<(int)type_specific_info[3]<<"\r\n";
     printer <<"timestamp:"<< timestamp<<"\r\n";
     printer <<"dst_socket_id:"<< dst_socket_id<<"\r\n";
 
@@ -245,7 +245,7 @@ std::string HandshakePacket::dump(){
     printer <<"syn_cookie:"<< syn_cookie<<"\r\n";
     printer <<"peer_ip_addr:";
     for(size_t i=0;i<sizeof(peer_ip_addr);++i){
-        printer<<peer_ip_addr[i]<<":";
+        printer<<(int)peer_ip_addr[i]<<":";
     }
     printer<<"\r\n";
 
diff --git a/srt/Packet.hpp b/srt/Packet.hpp
index fe56e236..546ece0c 100644
--- a/srt/Packet.hpp
+++ b/srt/Packet.hpp
@@ -118,9 +118,9 @@ public:
         USERDEFINEDTYPE = 0x7FFF
     };
 
-    uint32_t sub_type : 16;
-    uint32_t control_type : 15;
-    uint32_t f : 1;
+    uint16_t sub_type;
+    uint16_t control_type;
+    uint8_t f;
     uint8_t type_specific_info[4];
     uint32_t timestamp;
     uint32_t dst_socket_id;
diff --git a/srt/SrtTransport.cpp b/srt/SrtTransport.cpp
index 97d8f959..6a521c8a 100644
--- a/srt/SrtTransport.cpp
+++ b/srt/SrtTransport.cpp
@@ -228,7 +228,10 @@ void SrtTransport::handleHandshakeConclusion(HandshakePacket &pkt, struct sockad
 
 void SrtTransport::handleHandshake(uint8_t *buf, int len, struct sockaddr_storage *addr) {
     HandshakePacket pkt;
-    assert(pkt.loadFromData(buf, len));
+    if(!pkt.loadFromData(buf, len)){
+        WarnL<<"is not vaild HandshakePacket";
+        return;
+    }
 
     if (pkt.handshake_type == HandshakePacket::HS_TYPE_INDUCTION) {
         handleHandshakeInduction(pkt, addr);