Cannot Connect TCPIP

Question

Cannot Connect TCPIP

gkcabc opened this issue 3 years ago · comments

What OS?

Description of issue

Can connect using localhost or 127.0.0.1.
Cannot connect using LAN IP address (or hostname) (192.168.0.109) of PC.
Cannot connect to other devices on same LAN
Can connect using LAN IP with telnet. with everything.
Tried binding to 192.168.0.109, but no connect

Dan Nagle · Answer 1 · Fri Oct 22 2021 20:23:13 GMT+0800 (China Standard Time)

Do the pre-bundled packets work?

gkcabc · Answer 2 · Sat Oct 23 2021 02:06:06 GMT+0800 (China Standard Time)

I used the windows installer version. UDP works fine.

Dan Nagle · Answer 3 · Sun Oct 24 2021 08:43:44 GMT+0800 (China Standard Time)

How about the TCP bundled packets?

gkcabc · Answer 4 · Mon Oct 25 2021 14:35:34 GMT+0800 (China Standard Time)

Yes, that works to external sites (e.g.avalon-rpc.com). I have multiple NICs, it works over wifi (internet connection) but not over lan (local network). Seems to bind only to one NIC (internet). G.

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On Sun, Oct 24, 2021 at 2:43 AM Dan Nagle ***@***.***> wrote: How about the TCP bundled packets? [image: image] <https://user-images.githubusercontent.com/1140573/138575613-8602ff37-b4b6-4a6c-8cce-ed47822c6888.png> — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#259 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AWFMA37GFRKPIJNQ2SIJK23UINJEXANCNFSM5GQCS7XQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

Dan Nagle · Answer 5 · Mon Oct 25 2021 22:49:49 GMT+0800 (China Standard Time)

Bind to the IP you want in the Settings. Make sure Packet Sender says that IP exists in the title bar.

When you hit OK, it should show the bound IP in the bottom right.

gkcabc · Answer 6 · Tue Oct 26 2021 03:05:49 GMT+0800 (China Standard Time)

Yes, I did that - bind to NIC (192,168.100.1). Look at screenshot G.

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On Mon, Oct 25, 2021 at 4:50 PM Dan Nagle ***@***.***> wrote: Bind to the IP you want in the Settings. Make sure Packet Sender says that IP exists in the title bar. [image: image] <https://user-images.githubusercontent.com/1140573/138717948-1e3e6151-bc86-437e-8db5-908055d04706.png> When you hit OK, it should show the bound IP in the bottom right. [image: image] <https://user-images.githubusercontent.com/1140573/138718091-5262f62a-c968-4b9f-b8fb-b7b615909368.png> — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#259 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AWFMA32WDP47E6G6WMNN6CLUIVVBRANCNFSM5GQCS7XQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

Dan Nagle · Answer 7 · Tue Oct 26 2021 06:38:17 GMT+0800 (China Standard Time)

I don't see a screenshot. Did you paste one into the github thread?

gkcabc · Answer 8 · Tue Oct 26 2021 15:36:50 GMT+0800 (China Standard Time)

Sorry, I attached it to the mail, here it is.

Dan Nagle · Answer 9 · Wed Oct 27 2021 08:47:17 GMT+0800 (China Standard Time)

At a glance, these settings look OK. In fact, you shouldn't need to IP-bind. Try setting back to "IPv4 Only" since Cygwin probably isn't doing an IP-bind and is working OK.

What has me concerned is the "From Port". Something bizarre is happening underneath. 8368847 does not look right. Could you have a firewall blocking private connections to Packet Sender (but is allowing Cygwin to pass)? Your firewall could be allowing Packet Sender public connections (to get to an internet telnet server) but not private.

gkcabc · Answer 10 · Wed Oct 27 2021 19:41:20 GMT+0800 (China Standard Time)

Well, if I use a hostname (test), inserting into the hosts file "test 192.168.110.10", it works correctly (with no bind address).

Very strange.

Thanks

Gordon

Dan Nagle · Answer 11 · Wed Oct 27 2021 22:51:10 GMT+0800 (China Standard Time)

That is very strange. I can't even think of a good theory. I'm going to leave this ticket open for a while in case I do think of something.

gkcabc · Answer 12 · Fri Oct 29 2021 03:07:58 GMT+0800 (China Standard Time)

I don't think its anything to do with your code, I debugged it and there is no problem, calls QSslSocket.connectToHost correctly.

Looked at Windows Event logs, but nothing of interest.

Tried using the same configuration (192.168.100.10) on a Windows 7 machine with no problem.

Also tried using a Windows 7 VM on my Windows 10 machine with no problem

I conclude there is some problem with my Windows 10 machine

For me you can close.