{"action":"created","issue":{"url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/5863","repository_url":"https://api.github.com/repos/RIOT-OS/RIOT","labels_url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/5863/labels{/name}","comments_url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/5863/comments","events_url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/5863/events","html_url":"https://github.com/RIOT-OS/RIOT/issues/5863","id":178851835,"number":5863,"title":"gnrc_networking: cannot send udp packets > 23B","user":{"login":"smlng","id":10532675,"avatar_url":"https://avatars.githubusercontent.com/u/10532675?v=3","gravatar_id":"","url":"https://api.github.com/users/smlng","html_url":"https://github.com/smlng","followers_url":"https://api.github.com/users/smlng/followers","following_url":"https://api.github.com/users/smlng/following{/other_user}","gists_url":"https://api.github.com/users/smlng/gists{/gist_id}","starred_url":"https://api.github.com/users/smlng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/smlng/subscriptions","organizations_url":"https://api.github.com/users/smlng/orgs","repos_url":"https://api.github.com/users/smlng/repos","events_url":"https://api.github.com/users/smlng/events{/privacy}","received_events_url":"https://api.github.com/users/smlng/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/RIOT-OS/RIOT/labels/bug","name":"bug","color":"fc2929"},{"url":"https://api.github.com/repos/RIOT-OS/RIOT/labels/major","name":"major","color":"ff0000"},{"url":"https://api.github.com/repos/RIOT-OS/RIOT/labels/network","name":"network","color":"8f00cc"}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":8,"created_at":"2016-09-23T11:21:57Z","updated_at":"2016-09-23T12:47:22Z","closed_at":null,"body":"Hi,\r\n\r\njust ran into a curious problem, I used `gnrc_networking` example on two RIOT nodes, and run `udp server start 1234`. On the other node I run: `udp send <addr> 1234 foobar`. \r\n\r\nWhich works up to a string of length 23, afterwards the `udp send ...` command just blocks, and while I saw all previous transmissions in the sniffer and where dumped on the server side, 24B and above seem to be stuck at the sender.\r\n\r\nHere some output:\r\n```\r\n2016-09-23 13:21:16,628 - INFO # RIOT network stack example application\r\n2016-09-23 13:21:16,631 - INFO # All up, running the shell now\r\nudp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobar\r\n2016-09-23 13:21:27,889 - INFO # > udp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobar\r\n2016-09-23 13:21:27,895 - INFO # Success: send 18 byte to [fe80::1430:2488:724e:e2f0]:1234\r\nudp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobara\r\n2016-09-23 13:21:30,441 - INFO # > udp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobara\r\n2016-09-23 13:21:30,447 - INFO # Success: send 19 byte to [fe80::1430:2488:724e:e2f0]:1234\r\nudp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobara\r\n2016-09-23 13:21:31,965 - INFO # > udp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobara\r\n2016-09-23 13:21:31,971 - INFO # Success: send 19 byte to [fe80::1430:2488:724e:e2f0]:1234\r\nudp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobarab\r\n2016-09-23 13:21:34,879 - INFO # > udp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobarab\r\n2016-09-23 13:21:34,886 - INFO # Success: send 20 byte to [fe80::1430:2488:724e:e2f0]:1234\r\nudp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobarabc\r\n2016-09-23 13:21:36,220 - INFO # > udp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobarabc\r\n2016-09-23 13:21:36,226 - INFO # Success: send 21 byte to [fe80::1430:2488:724e:e2f0]:1234\r\nudp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobarabcd\r\n2016-09-23 13:21:37,662 - INFO # > udp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobarabcd\r\n2016-09-23 13:21:37,668 - INFO # Success: send 22 byte to [fe80::1430:2488:724e:e2f0]:1234\r\nudp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobarabcde\r\n2016-09-23 13:21:38,996 - INFO # > udp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobarabcde\r\n2016-09-23 13:21:39,002 - INFO # Success: send 23 byte to [fe80::1430:2488:724e:e2f0]:1234\r\nudp send fe80::1430:2488:724e:e2f0 1234 foobarfoobarfoobarabcdef\r\n```"},"comment":{"url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/comments/249182782","html_url":"https://github.com/RIOT-OS/RIOT/issues/5863#issuecomment-249182782","issue_url":"https://api.github.com/repos/RIOT-OS/RIOT/issues/5863","id":249182782,"user":{"login":"smlng","id":10532675,"avatar_url":"https://avatars.githubusercontent.com/u/10532675?v=3","gravatar_id":"","url":"https://api.github.com/users/smlng","html_url":"https://github.com/smlng","followers_url":"https://api.github.com/users/smlng/followers","following_url":"https://api.github.com/users/smlng/following{/other_user}","gists_url":"https://api.github.com/users/smlng/gists{/gist_id}","starred_url":"https://api.github.com/users/smlng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/smlng/subscriptions","organizations_url":"https://api.github.com/users/smlng/orgs","repos_url":"https://api.github.com/users/smlng/repos","events_url":"https://api.github.com/users/smlng/events{/privacy}","received_events_url":"https://api.github.com/users/smlng/received_events","type":"User","site_admin":false},"created_at":"2016-09-23T12:47:22Z","updated_at":"2016-09-23T12:47:22Z","body":"I narrowed it down to OS X with `gcc-arm-none-eabi-4_9-2015q2` and `samr21-xpro`, there is problem with more than 64 chars in the shell. \r\n\r\nOn Linux with `gcc-arm-none-eabi-5_2` everything works as expected."}}
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