Zabbix

...G...PS. [ZBX-10820] fixed potential loss of data when server/proxy processes zabbix_sender data

With this change:
   - after an incoming connection is established its peer IP address is
     obtained immediately, stored and used in all following checks and error
     reporting. If the peer IP address cannot be obtained the connection is
     closed,
   - buffer lengths have been increased from 64 to 256 bytes to prevent
     truncation of long DNS names when getting 'net.tcp.port',
     'net.tcp.service', 'net.tcp.service.perf', 'net.udp.service.perf'
     and 'net.udp.service' items.