パスを出力して、FF が何を要求しているかを確認する必要があります。Snoop の例によって無効な形式が送信されるため、複数回要求される (再試行メカニズム) favicon.ico であると確信しています。
編集。私はそれを確認しました、そしてそれは確かに3回要求されるファビコンです:
Thread[New I/O server worker #1-3,5,main] - [id: 0x57c52e72, /0:0:0:0:0:0:0:1:63056 => /0:0:0:0:0:0:0:1:8080] RECEIVED: DefaultHttpRequest(chunked: false) GET / HTTP/1.1 Host: localhost:8080 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip, deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Connection: keep-alive
Thread[New I/O server worker #1-3,5,main] - GET
Thread[New I/O server worker #1-3,5,main] - /
Thread[New I/O server worker #1-3,5,main] - [id: 0x57c52e72, /0:0:0:0:0:0:0:1:63056 => /0:0:0:0:0:0:0:1:8080] RECEIVED: DefaultHttpRequest(chunked: false) GET /favicon.ico HTTP/1.1 Host: localhost:8080 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0 Accept: image/png,image/*;q=0.8,*/*;q=0.5 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip, deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Connection: keep-alive
Thread[New I/O server worker #1-3,5,main] - GET
Thread[New I/O server worker #1-3,5,main] - /favicon.ico
Thread[New I/O server worker #1-3,5,main] - [id: 0x57c52e72, /0:0:0:0:0:0:0:1:63056 => /0:0:0:0:0:0:0:1:8080] RECEIVED: DefaultHttpRequest(chunked: false) GET /favicon.ico HTTP/1.1 Host: localhost:8080 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip, deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Connection: keep-alive
Thread[New I/O server worker #1-3,5,main] - GET
Thread[New I/O server worker #1-3,5,main] - /favicon.ico
Thread[New I/O server worker #1-3,5,main] - [id: 0x57c52e72, /0:0:0:0:0:0:0:1:63056 => /0:0:0:0:0:0:0:1:8080] RECEIVED: DefaultHttpRequest(chunked: false) GET /favicon.ico HTTP/1.1 Host: localhost:8080 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip, deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Connection: keep-alive
Thread[New I/O server worker #1-3,5,main] - GET
Thread[New I/O server worker #1-3,5,main] - /favicon.ico