I need to test if a ssl server is likely to respond before doing any forward as I would otherwise “loose” a projection screen.
\nAs the server uses only a self-signed certificate, basically all javascript tricks (iframe on the fly, jsonp, …) failed either due to Cross-Origin Resource Sharing (CORS) rules. Even after switching to php the first two methods failed (get header, fsockets) while I finally ended with a simple curl request<\/p>\n
\r\n$ch = curl_init();\r\ncurl_setopt($ch, CURLOPT_URL, 'https:\/\/localhost:8443');\r\ncurl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);\r\ncurl_setopt($ch, CURLOPT_RETURNTRANSFER, true);\r\n$response = curl_exec($ch);\r\ncurl_close($ch);\r\nif (curl_error($ch)[0]=="") header('Location: https:\/\/localhost:8443');\r\n<\/pre>\n\n <\/p>\n
\n CC-BY-NC Science Surf , accessed 29.04.2026<\/span>\n <\/div>","protected":false},"excerpt":{"rendered":"I need to test if a ssl server is likely to respond before doing any forward as I would otherwise “loose” a projection screen. As the server uses only a self-signed certificate, basically all javascript tricks (iframe on the fly, jsonp, …) failed either due to Cross-Origin Resource Sharing (CORS) rules. Even after switching to … Continue reading Test before redirect<\/span>