Unverified50% confidenceFactExact time
LocalSend's device auto-discovery is based on UDP broadcast/multicast technology, with file transfers switching to TCP-based HTTPS connections, adopting a dual-protocol architecture of UDP discovery + TCP transmission
1
Sources
50%
Confidence
Long-term
Relevance
8/14/2026
First Seen
Sources
LocalSend：开源免费的跨平台AirDrop替代方案
Related Claims
UnverifiedAutomatic device discovery on a LAN is typically implemented via a UDP broadcast mechanism, which sends packets to a broadcast address (e.g., 192.168.1.255) that all devices listening on that port can receive.80% similarUnverifiedDDS在底层采用RTPS协议实现可靠的实时数据传输，支持通过UDP组播实现跨子网的自动节点发现70% similarUnverified局域网直连方案通常采用 mDNS 或 SSDP 协议实现零配置设备发现，数据传输层可选 WebSocket 或自定义 TCP 协议69% similarUnverifiedWebRTC使用UDP协议，而大多数VPN默认只路由TCP流量，导致UDP请求绕过VPN隧道暴露真实IP67% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/745928API
curl https://kongchang.com/api/v1/knowledge/claims/745928MCP
get_claim(id=745928)