I just tried this, but I can't seem to connect. http://cs110.students.cs.ubc.ca:7979/ gives "connection reset", and https://cs110.students.cs.ubc.ca:7979/ gives "secure connection failed".
There's no prompt to accept the certificate (which I wouldn't expect, because we're using a CA signed certificate through Let's Encrypt, not a self-signed certificate). I'm currently experiencing the problem on my own client. I'm not sure if that's related; I also couldn't connect from my phone. -- William J. Bowman On Sat, Sep 18, 2021 at 09:24:05PM -0400, Sam Tobin-Hochstadt wrote: > Have you tried visiting the server with a browser? That should work, > although you'll have to accept the certificate. It might also indicate some > aspect of the behavior. > > Sam > > On Sat, Sep 18, 2021, 7:13 PM 'William J. Bowman' via Racket Users < > [email protected]> wrote: > > > I need some help debugging an issue with the handin package. The handin > > plugin (client) displays “Making secure connection to <handin server> …”, > > and simply hangs. Closing the dialog and trying again never resolves the > > issue. > > > > The only method that seems to resolve the issue, although inconsistently, > > is restarting DrRacket, opening a new file, and trying to submit that new > > file. This sometimes, but not always, enables the client to connect. Once > > it does connect, the issue doesn't seem to recur for some time. The client > > can make multiple successful submissions, at least until the end of lecture > > (maybe related to the next time they disconnect/reconnect to the internet). > > > > We running Racket 7.8 on the server and 8.1 BC on the clients. We've seen > > the issue occur on many operating system---old and new versions of macOS, > > Windows 10, and at one report on Linux. > > > > I can't just upgrade the clients to 8.2, since there's a bug in 8.2 that > > affects rendering inexact numbers in BSL, so I really want some confidence > > about what the issue is before I start upgrading versions. > > > > Anecdotally, the problem seems more common this semester compared to the > > previous semester, and we upgraded the clients to 8.1 this semester, > > suggesting the clients are at fault. > > > > When this problem occurs, there is nothing in the log on the handin > > server, suggesting the client did not even manage to initiate the > > connection to the server. In particular, the server never seems to make it > > to this log line: > > > > https://github.com/racket/handin/blob/ac08937cc6b1eca8abe3d4d4df59876f95cbea17/handin-server/main.rkt#L679 > > This is one the earliest log lines and before pretty much anything > > happens, so we're *PRETTY SURE* the client is blocking. > > > > Right now, my best guess is that we might be affected by this bug, which > > causes SSL ports to block incorrectly: > > https://github.com/racket/racket/issues/3804 > > > > If so, it would probably be in the client, unless `(ssl-addresses r)` can > > block in the same way on the server, since otherwise the above log line > > would execute. > > > > However, if it is the client, I don't have any explanation about why > > restarting DrRacket would workaround the bug, or why it sometimes doesn't > > work. > > > > I'd appreciate any help. > > > > -- > > William J. Bowman > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Racket Users" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [email protected]. > > To view this discussion on the web visit > > https://groups.google.com/d/msgid/racket-users/YUZyWlsY9CdCDyPu%40williamjbowman.com > > . > > -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/YUaZj9v0Lch0jfMC%40williamjbowman.com.
