log如下:
Mixed Content: The page at '<URL>' was loaded over HTTPS, but requested an insecure image '<URL>'. This content should also be served over HTTPS.
forum.php?mod=viewthread&tid=14&extra=page%3D1:1511 Mixed Content: The page at 'https://www.mydigit.cn/forum.php?mod=viewthread&tid=14&extra=page%3D1' was loaded over HTTPS, but requested an insecure image 'http://img.mydigit.cn/block/5a/5ad9499c8fdcc61aa523b71034feb717.jpg'. This content should also be served over HTTPS.
forum.php?mod=viewthread&tid=14&extra=page%3D1:1514 Mixed Content: The page at 'https://www.mydigit.cn/forum.php?mod=viewthread&tid=14&extra=page%3D1' was loaded over HTTPS, but requested an insecure image 'http://img.mydigit.cn/block/ec/ec3dcedec23a4a0403b422742748bb91.jpg'. This content should also be served over HTTPS.
forum.php?mod=viewthread&tid=14&extra=page%3D1:1517 Mixed Content: The page at 'https://www.mydigit.cn/forum.php?mod=viewthread&tid=14&extra=page%3D1' was loaded over HTTPS, but requested an insecure image 'http://img.mydigit.cn/forum/201901/05/123027bidd22kadihe22zl.gif'. This content should also be served over HTTPS.
forum.php?mod=viewthread&tid=14&extra=page%3D1:1 Mixed Content: The page at 'https://www.mydigit.cn/forum.php?mod=viewthread&tid=14&extra=page%3D1' was loaded over HTTPS, but requested an insecure image 'http://img.mydigit.cn/forum/201901/05/102246y0p3csq0scg0ps0f.jpg'. This content should also be served over HTTPS.