Strange Log in [Photon-Default] Log File

Hey Guys.

When I Start My Photon Server in this morning.

My Photon Server log file [Photon-Default]

Show my this log

------------------------Photon-Default -------------------- LOG START -------------------------------------------

4156: 04:01:54.569 - CTCPWebSocketServer::ReadCompleted - Exception - CRequestHeaders::ValidateBasicRequestHeaders() - Handshake headers do not include header: "upgrade" with value: "WebSocket".
"accept" - "*/*" - 61 63 63 65 70 74 00 - accept. -
"host" - "www.baidu.com" - 68 6F 73 74 00 - host. -
"proxy-connection" - "Keep-Alive" - 70 72 6F 78 79 2D 63 6F 6E 6E 65 63 74 69 6F 6E 00 - proxy-connection. -
Host: www.baidu.com
Accept: */*
Proxy-Connection: Keep-Alive

------------------------Photon-Default -------------------- LOG End -------------------------------------------

I never use baidu

I have no idea what happens.

Can anyone help me? thanks.