fix streamid zero error

srt/HSExt.cpp

@@ -81,7 +81,9 @@ bool HSExtStreamID::loadFromData(uint8_t *buf, size_t len)  {
         ptr+=4;
     }
     char zero = 0x00;
-    streamid.erase(streamid.find_first_of(zero),streamid.size());
+    if(streamid.back() == zero){
+        streamid.erase(streamid.find_first_of(zero),streamid.size());
+    }
     return true;
 
  }

srt/SrtSession.cpp

@@ -10,7 +10,10 @@ using namespace mediakit;
 SrtSession::SrtSession(const Socket::Ptr &sock)
     : UdpSession(sock) {
     socklen_t addr_len = sizeof(_peer_addr);
+    memset(&_peer_addr,0,addr_len);
+    TraceL<<"before addr len "<<addr_len;
     getpeername(sock->rawFD(), (struct sockaddr *)&_peer_addr, &addr_len);
+    TraceL<<"after addr len "<<addr_len<<" family "<<_peer_addr.ss_family;
 }
 
 SrtSession::~SrtSession() {

srt/SrtTransport.cpp

-#include "Util/onceToken.h"
+#include <stdlib.h>
+#include "Util/onceToken.h"
 
 #include "SrtTransport.hpp"
 #include "Packet.hpp"
@@ -297,7 +298,7 @@ void SrtTransport::handleACKACK(uint8_t *buf, int len, struct sockaddr_storage *
     pkt->loadFromData(buf,len);
 
     uint32_t rtt = DurationCountMicroseconds(_now - _ack_send_timestamp[pkt->ack_number]);
-    _rtt_variance  = (3*_rtt_variance+abs(_rtt - rtt))/4;
+    _rtt_variance  = (3*_rtt_variance+abs((long)(_rtt - rtt)))/4;
     _rtt = (7*rtt+_rtt)/8;
 
     _ack_send_timestamp.erase(pkt->ack_number);