We have various services and APIs served via Node.js version 14 on IIS using iisnode (https://github.com/Azure/iisnode). In the last couple months we've had reports from people using Safari that they can't use some of these services.
I've narrowed the problem down to https URLs - http works fine. If I enter the https URL of my test page in Safari 10 on iOS 10.3.3 the browser loading bar stays in the same place for 60 seconds then gives up with the message: "Safari could not open the page because the server stopped responding."
Here's the Node.js server code to run on the iisnode server:
const http = require("http"); const server = http.createServer(async(req, res) => { if (req.url === "/test" && req.method === "GET") { console.log(`Request to /test at ${Date.now()}`); res.writeHead(200, { "Content-Type": "text/plain" }); res.end(`/test at ${Date.now()}`); } }); server.listen(process.env.PORT, () => { console.log(`server started on port: ${process.env.PORT}`); }); Navigating Safari to /test yields the following iisnode log:
server started on port: \\.\pipe\67678fe-c6de-448e-96c4-6c79ca947214 Request to /test at 1644335072668 Request to /test at 1644335072888 Request to /test at 1644335072993 Request to /test at 1644335073079 Request to /test at 1644335073156 Request to /test at 1644335073242 ... The iisnode log shows that the server received the requests and successfully served a response. In fact, Safari repeats the request every 100 ms or so, all of which the Node.js app appear to respond to successfully.
Note that I can successfully visit https pages on the server that are served via ColdFusion or Classic ASP, so this is something more specific to Node.js.
I can duplicate this issue with both iPhone and iPad with Safari 10 on iOS 10.3.3. Unfortunately I can't test in a different browser on these devices since those apps require a higher version of iOS.
These versions of Safari work fine:
- iPhone 12 mini
- MacBook with Safari 10.1.2 on macOS 10.10.5
I'm guessing this has something to do with Safari (or iOS) rejecting the certificate for https but I'm not sure how to get further detail. I've tried opening the developer console on my MacBook for the problematic iPhone but it gave no errors about why the https page could not be loaded.
