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add fromAddr check

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This commit is contained in:
healthykim 2026-03-17 17:12:39 +09:00
parent b788e266a7
commit e7430ef236
1 changed files with 5 additions and 1 deletions
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6
cmd/devp2p/internal/v5test/framework.go
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@ -229,10 +229,14 @@ func (tc *conn) read(c net.PacketConn) v5wire.Packet {
if err := c.SetReadDeadline(time.Now().Add(waitTime)); err != nil {
return &readError{err}
}
n, _, err := c.ReadFrom(buf)
n, fromAddr, err := c.ReadFrom(buf)
if err != nil {
return &readError{err}
}
// Verify the packet is from an expected remote address.
if fromAddr.String() != tc.remoteAddrFor(c).String() {
return readErrorf("packet from unexpected address %v", fromAddr)
}
// Always use remoteAddr for codec session lookup, even if the actual sender
// address differs (e.g. in multi-network setups where packets are routed
// through a different interface).