=> R0 = pointer to zero-terminated host name
<= R0 = pointer to error block if error, error number
R1 = pointer to hostent structure if successful, or 0 otherwise
This SWI will either return a host entry if one is cached or begin a lookup if not. This call should be used for multi-tasking lookups. EINPROGRESS will be returned if the lookup is still in progress.
Resolver_GetHost errors
Number Meaning
>0 Standard socket error number
usually this will be EINPROGRESS (36)
0 No error
-1 Host not found
-2 Resolve failure (eg didn't respond)
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