Hello,
this is a very simple test program:
* build53.some.org resolves and exists
* build55.some.org does not resolve and does not exist
#!/usr/bin/rexx
If RxFuncQuery("SockDropFuncs") then
do
rc = RxFuncAdd("SockLoadFuncs","rxsock","SockLoadFuncs")
rc = SockLoadFuncs()
end
say SockGetHostByName( 'build53.some.org', 'a.!')
say symbol('h_errno') h_errno
say symbol('errno') errno
say symbol('a.!addr')
say a.!addr
say "--------------------------------------------------"
say SockGetHostByName( 'build55.some.org', 'b.!')
say symbol('h_errno') h_errno
say symbol('errno') errno
say symbol('b.!addr')
say b.!addr
say "--------------------------------------------------"
say SockGetHostByName( 'build55.some.org', 'a.!')
say symbol('h_errno') h_errno
say symbol('errno') errno
say symbol('a.!addr')
say a.!addr
/* output
1 <- OK no problem
VAR 1541
VAR 0
VAR
10.3.1.155
--------------------------------------------------
0 <- error (the FQDN does not resolve)
VAR 1541
VAR 0
LIT
B.!ADDR
--------------------------------------------------
0 <- error (the FQDN does not resolve) but a.!addr is still set
VAR 1541
VAR 0
VAR
10.3.1.155
*/
So if you do not check the rc and just rely on the returned value than
you are in bad luck.
Would it not be better to clear the var in case of an error ?? Just a
question...
Bye
Rainer
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