Re: [9fans] sshnet and the go dns resolver
thanks all for the suggestions. digging through the source of sshnet.c and the go net library i think i understand. the plan9 runtime library assumes, and insists the string returned from /net/cs contains a valid ip address. the code in sshnet which serves a /net/cs does a local ndb lookup, and if that fails, returns the dns name it was given. i guess this is to allow name resolution to be tried at the remote host. i shall experiment a bit more. -Steve -- 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T774469ff9f943e45-M892fd19deed0c0a02dd942a8 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
Re: [9fans] sshnet and the go dns resolver
I’ve noticed similar problems with go programs and resolving a lookup. There are go programs that explicitly look for “/etc/resolv.conf” to grab the nameserver to use, though it would be nice if the developer were using the default net package for lookups. > On Feb 23, 2021, at 3:34 PM, Steve Simon wrote: > > hi, > > the senerio - i have a plan9 terminal, a mac laptop. the laptop connects to a > vpn. > > i write in go, and thus far i use sshfs to mount the mac’s filesystem and > edit my code. i build and run the code on the mac. > > i thought i could use git9 via sshnet to work natively on plan9 > > most of this is fine but when go tries to access mod files for packages on > the vpn i get a “no sutiable address found” error for proxy.golang.org. > > i can resce the address i need (over the vpn) using ndb/dnsquery however. > > if i try and build without my sshnet vpn connection then i get a different > error which refers to a repository on the vpn. > > so. i think the native resolver in the go libraries (and thus in the go > executable) do not play nicely with sshnet. > > my guess (only a guess) is go is trying to do its own name resolution using > udp port 53 and sshnet does not support udp. > > anyone any ideas? > can i convince go to use plan9’s own name resolution? > can ssh (and thus sshnet) forward udp or is that not possible? > > thanks for any ideas > > -Steve > -- 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T774469ff9f943e45-Mab4a9e43134cbeda9523e532 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
Re: [9fans] sshnet and the go dns resolver
The Go net package uses /net/cs and /net/dns. I see sshnet doesn't create /net/dns. That could be the issue. fhs On Tue, Feb 23, 2021 at 4:35 PM Steve Simon wrote: > hi, > > the senerio - i have a plan9 terminal, a mac laptop. the laptop connects > to a vpn. > > i write in go, and thus far i use sshfs to mount the mac’s filesystem and > edit my code. i build and run the code on the mac. > > i thought i could use git9 via sshnet to work natively on plan9 > > most of this is fine but when go tries to access mod files for packages on > the vpn i get a “no sutiable address found” error for proxy.golang.org. > > i can resce the address i need (over the vpn) using ndb/dnsquery however. > > if i try and build without my sshnet vpn connection then i get a different > error which refers to a repository on the vpn. > > so. i think the native resolver in the go libraries (and thus in the go > executable) do not play nicely with sshnet. > > my guess (only a guess) is go is trying to do its own name resolution > using udp port 53 and sshnet does not support udp. > > anyone any ideas? > can i convince go to use plan9’s own name resolution? > can ssh (and thus sshnet) forward udp or is that not possible? > > thanks for any ideas > > -Steve > -- 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T774469ff9f943e45-M6e96a817ce5e09891b086877 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
[9fans] sshnet and the go dns resolver
hi, the senerio - i have a plan9 terminal, a mac laptop. the laptop connects to a vpn. i write in go, and thus far i use sshfs to mount the mac’s filesystem and edit my code. i build and run the code on the mac. i thought i could use git9 via sshnet to work natively on plan9 most of this is fine but when go tries to access mod files for packages on the vpn i get a “no sutiable address found” error for proxy.golang.org. i can resce the address i need (over the vpn) using ndb/dnsquery however. if i try and build without my sshnet vpn connection then i get a different error which refers to a repository on the vpn. so. i think the native resolver in the go libraries (and thus in the go executable) do not play nicely with sshnet. my guess (only a guess) is go is trying to do its own name resolution using udp port 53 and sshnet does not support udp. anyone any ideas? can i convince go to use plan9’s own name resolution? can ssh (and thus sshnet) forward udp or is that not possible? thanks for any ideas -Steve -- 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T774469ff9f943e45-Me6b7b01e94fd355714ebf049 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
