murfffi commented on code in PR #3488:
URL: https://github.com/apache/thrift/pull/3488#discussion_r3252193561


##########
lib/go/thrift/socket_unix_conn.go:
##########
@@ -38,7 +39,14 @@ func (sc *socketConn) read0() error {
 }
 
 func (sc *socketConn) checkConn() error {
-       syscallConn, ok := sc.Conn.(syscall.Conn)
+       rawConn := sc.Conn
+       syscallConn, ok := rawConn.(syscall.Conn)
+       if !ok {
+               if connTLS, isTLS := rawConn.(*tls.Conn); isTLS {
+                       rawConn = connTLS.NetConn()

Review Comment:
   Thanks for the review! I agree that the version is more convoluted and thus 
error prone . 
   
   I wondered if it is likely that, in the future, Go team makes *tls.Config 
implement syscall.Conn directly, possibly to utilize 
https://docs.kernel.org/networking/tls-offload.html on Linux. 
   
   I though about this more and I believe that if something drastic like that 
happens, the syscall code may not work and we will better unwrapping the 
connection anyway.
   
   I changed it back to the variant in JIRA. Please take another look.



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