| 摘要 |
The present invention discloses a packet transmission method, apparatus, and system in a multicast domain name system mDNS, which are used to resolve a network bandwidth waste problem because generally much service information needs to be transmitted in an mDNS-based network. The method includes: converting, by a relay, a Known-Answer service query packet that is sent by a user terminal and used to query service information in an mDNS, into a unicast Known-Answer service query packet and sending the unicast Known-Answer service query packet to a gateway; receiving, by the relay, a unicast Known-Answer service answer packet that is sent by the gateway and includes service information unknown to the user terminal; and converting, by the relay, the unicast Known-Answer service answer packet into a multicast Known-Answer service answer packet and sending the multicast Known-Answer service answer packet to the user terminal. |
