docs: more notes about errors

2016-06-04 16:11:09 -04:00 · 2016-06-04 16:11:09 -04:00 · 79d44e403c
parent b03d9a4c2f
commit 79d44e403c
1 changed files with 5 additions and 0 deletions
--- a/docs/implementation-guide.md
+++ b/docs/implementation-guide.md
@ -7,6 +7,11 @@ MUST conform to this semantics.

 All error codes MUST be negative and be less than `UV_ERRNO_MAX`.

+* `UV_ENOSYS` SHOULD be returned if the particular method (e.g. `shutdown` or
+  `try_write`)
+* `UV_EAGAIN` MUST be returned by `uv_link_methods_t.try_write` if the write
+  could not be completed at the moment
+
 ## uv_link_init()

 Links start in non-reading mode, `alloc_cb`/`read_cb` MUST NOT be called until