net.lookup locked
Locked
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Hello guys!
Today I was trying to use net.lookup to find the IP address of a host, to then ask data with net.connect, but, the net.lookup gets locked forever. Maybe it's not finding a DNS server to ask.
I am using a mizar32 with this build: I made a simple test with: = net.lookup("www.eluaproject.net") Unfortunately it does nor work... Tips?
Cheers! _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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Just to remember... I have a Stellaris LM3S8962 and the net.lookup runs as expected, so, I suppose the problem is not with my network.
2013/5/6 Gabriel Duarte <[hidden email]>
Gabriel Duarte Linux User #471185Rio de Janeiro / RJ http://genericdev.wordpress.com/ _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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Hi Gabriel, Did you edit the default value for a valid DNS server? If you're using the eLua web builder, it is easy to find this field under advanced options.
If you're building it in a toolchain of yours, grep for "dns_address =" and add the IP of the DNS server of your choice. I hope it helps, pls let us know.
Best Dado
On Mon, May 6, 2013 at 9:37 PM, Gabriel Duarte <[hidden email]> wrote:
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Nop, I didn't.
I have used the SimpleMachines web builder... I do not know to where to point, once I do not have a DNS server. Actually I tried to use Google's DNS server in a second build, 8.8.8.8, but didn't work anyway.
I would like to know to where the LM3S8962 is pointing the DNS, considering the fact that it's working fine. Cheers 2013/5/6 Dado Sutter <[hidden email]>
Gabriel Duarte Linux User #471185Rio de Janeiro / RJ http://genericdev.wordpress.com/ _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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If your build has the the DHCP option active, the kit should receive and use not only it's IP but also the DNS server IP. I don't know how this works on the Mizar32 web builder though :( Maybe the defaults are different but their doc is 1st class.
Martin, Nuccio and Sergio are also here to help a hand ... I'd love to see your Mizar32 working perfectly ASAP, for the number of projects where it can be used doesn't stop to grow.
Best Dado On Mon, May 6, 2013 at 10:50 PM, Gabriel Duarte <[hidden email]> wrote:
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It has... I can use, for example, it as a small webserver, receiving connections. The only problems is the lookup, since I need to translate hostnames into IP addresses to connect with the host and grab data. 2013/5/7 Dado Sutter <[hidden email]>
Gabriel Duarte Linux User #471185Rio de Janeiro / RJ http://genericdev.wordpress.com/ _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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The guys from SimpleMachines could help me? 2013/5/7 Gabriel Duarte <[hidden email]>
-- Gabriel Duarte Linux User #471185Rio de Janeiro / RJ http://genericdev.wordpress.com/ _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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Gabriel, Have you some progress? Maybe you can sniff the network traffic, looking for DNS packages, to see if that has all data and for which address it is going to. This should be usefull for debugging... On May 7, 2013 9:33 PM, "Gabriel Duarte" <[hidden email]> wrote:
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Nop :( I do not know how to sniff the network to look for DNS packages, and anyway, I do not think there is a problem in my network. Probably it's just a tricky configuration somewhere and I will find it, but I would like to hear from SimpleMachines guys to know if they have seen this behavior before.
Cheers 2013/5/9 Lucas R. Martins <[hidden email]>
Gabriel Duarte Linux User #471185Rio de Janeiro / RJ http://genericdev.wordpress.com/ _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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Hi Gabriel, sorry for the delay in replying
When I tested the Mizar32 network stuff a year ago it gave no problems in this area. Can you try the elua-0.9 firmware for Mizar32 from http://www.eluaproject.net/get-started/downloads and let us know if that improves things for you? M _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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hi again.
I can confirm that Mizar32 gets its address correctly from a DHCP server on the local network and that net.lookup() works fine. > p=net.lookup("simplemachines.it") > =p -1341547820 > =net.unpackip(p, '*s') 176.9.154.212 > I guess you need to sort out your local network/DHCP server/DNS server/internet gateway. M _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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Hello Martin, it's good to hear from you. I can test for you the 0.9 to see what is improved :D I have flashed a firmware from simplemachines web builder, with UIP and DNS resolver.
I noticed that Mizar32 always gets the IP address that I set into the builder, not a DHCP address. It's strange, maybe it's a problem with DHCP server (my router, in this case) and because of it does not find correct settings, like DNS server and gateway, only uses the default
address set at build time, 192.168.1.1, if I remember correctly. Which firmware version are you using? 2013/5/11 Martin Guy <[hidden email]> hi again. -- Gabriel Duarte Linux User #471185Rio de Janeiro / RJ http://genericdev.wordpress.com/ _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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-> 192.168.1.1 This was my last build: 2013/5/11 Gabriel Duarte <[hidden email]>
-- Gabriel Duarte Linux User #471185Rio de Janeiro / RJ http://genericdev.wordpress.com/ _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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This one is without DHCP, but the previous has but does not work anyway: 2013/5/11 Gabriel Duarte <[hidden email]>
-- Gabriel Duarte Linux User #471185Rio de Janeiro / RJ http://genericdev.wordpress.com/ _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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OK, please use the official firmware, either 20120123 or elua 0.9, so
that we are talking about the same thing. I am able to reproduce your symptom - that net.lookup() blocks - in the following circumstances: - No DHCP server gives the Mizar32 an address and routing info - It gets a DHCP address but cannot contact the name server If no DHCP server responds for 60 seconds, eLua stops trying and sets the fixed addresses, which are: #define ELUA_CONF_IPADDR0 192 #define ELUA_CONF_IPADDR1 168 #define ELUA_CONF_IPADDR2 1 #define ELUA_CONF_IPADDR3 10 #define ELUA_CONF_NETMASK0 255 #define ELUA_CONF_NETMASK1 255 #define ELUA_CONF_NETMASK2 255 #define ELUA_CONF_NETMASK3 0 #define ELUA_CONF_DEFGW0 192 #define ELUA_CONF_DEFGW1 168 #define ELUA_CONF_DEFGW2 1 #define ELUA_CONF_DEFGW3 1 #define ELUA_CONF_DNS0 192 #define ELUA_CONF_DNS1 168 #define ELUA_CONF_DNS2 1 #define ELUA_CONF_DNS3 1 I hope this helps m _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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Hi again Gabriel.
Trying to reproduce your problem, our Mizar32 developers are finding that net.lookup sometimes works and sometimes doesn't, apparently at random. On Saturday it was working for me - today it isn't, and that goes for both SM's 0.8-based firmware and the 0.9 firmware on the eluaproject.net site. I've been trying to finalise the Simplemachines' release of elua-0.9 in the last few days, and with that am getting consistent success where the other two firmwares are failing. Maybe you could help me with a little beta-testing of the attached firmware, which you'll need to gunzip first, and let me know if it improves anything for you? M _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
elua_lualong_at32uc3a0256_mizar32_0.9rc1.hex.gz (236K) |
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Hello Matin! That's bad you coud reproduce the problem, I was wishing I would a problem only with me. I will flash this firmware tonight and give you a report about what happens. I hope it will work.
You got any idea where is the problem? uIP? Cheers 2013/5/13 Martin Guy <[hidden email]> Hi again Gabriel. Gabriel Duarte Linux User #471185Rio de Janeiro / RJ http://genericdev.wordpress.com/ _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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> You got any idea where is the problem? uIP?
That's a big question. It could be one of many things, and whether it works for you is one test that may suggest the cause. To apply most debugging methods, you have to be able to repeat the failure. At present I only have it failing on your network and my colleague's home network, with you using your firmware from the Web Builder and him using his own firmware that he has been modifying to improve other areas. That's why I ask you to test SM's 0.8 release binary and eluaproject's 0.9 Mizar32 binary, reducing the problem to bugs in those firmwares, problems with your Mizar32 hardware and the setup of your home network. M _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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Hello Martin! With this firmware you sent me, I cant get even access to eLua's command line, be through screen or Goat :/ This firmware is compiled with UART support? I could not find how to build eLua 0.9 from eLua Web builder, only 0.8. I have tested SM's 0.8, elua_lua_at32uc3a0256.hex, from mizar32-firmware-20120123.tgz and does not work anyway :(
2013/5/14 Martin Guy <[hidden email]>
Gabriel Duarte Linux User #471185Rio de Janeiro / RJ http://genericdev.wordpress.com/ _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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> With this firmware you sent me, I cant get even access to eLua's command
> line, be through screen or Goat :/ This firmware is compiled with UART > support? No, console is on USB. Or yes, the virtual UART on the USB port. > I could not find how to build eLua 0.9 from eLua Web builder, only 0.8. For 0.9 with web builder, you can use the "Mizar32 WEB Builder (branch master)" interface. I didn't write the web builder, but it looks like it fetches the latest sources from github.com > I have tested SM's 0.8, elua_lua_at32uc3a0256.hex, from > mizar32-firmware-20120123.tgz and does not work anyway :( Please be more specific. What exact commands are you using? What output do you get? What "does not work"? M _______________________________________________ eLua-dev mailing list [hidden email] https://lists.berlios.de/mailman/listinfo/elua-dev |
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