Add Mezzano support

set-timeouts.lisp

@@ -40,7 +40,7 @@ which means that the corresponding socket timeout value will not be
 set."
   (declare (ignorable usocket read-timeout write-timeout))
   ;; add other Lisps here if necessary
-  #+(or :sbcl :cmu :abcl)
+  #+(or :sbcl :cmu :abcl :mezzano)
   (unless (eql read-timeout write-timeout)
     (parameter-error "Read and write timeouts for socket must be equal."))
   #+:clisp
@@ -82,6 +82,8 @@ set."
     (warn "Unimplemented."))
   #+:clasp
   (warn "set-timeouts unimplemented.")
-  #-(or :clisp :allegro :openmcl :sbcl :lispworks :cmu :ecl :abcl :clasp)
+  #+:mezzano
+  (let ((connection (mezzano.network.tcp:tcp-stream-connection (usocket:socket usocket))))
+    (setf (mezzano.network.tcp:tcp-connection-timeout connection) read-timeout))
+  #-(or :clisp :allegro :openmcl :sbcl :lispworks :cmu :ecl :abcl :clasp :mezzano)
   (not-implemented 'set-timeouts))
-