diff --git a/esp32/bindings.fs b/esp32/bindings.fs
index 461a323..78e51b0 100644
--- a/esp32/bindings.fs
+++ b/esp32/bindings.fs
@@ -90,19 +90,23 @@ transfer sockets-builtins
 1 constant SOCK_STREAM
 2 constant SOCK_DGRAM
 3 constant SOCK_RAW
+
 2 constant AF_INET
 16 constant sizeof(sockaddr_in)
 1 constant SOL_SOCKET
 2 constant SO_REUSEADDR
-: bs, ( n -- ) dup 256 / c, c, ;
-: s, ( n -- ) dup c, 256 / c, ;
-: l, ( n -- ) dup s, 65536 / s, ;
+
+: bs, ( n -- ) dup 8 rshift c, c, ;
+: s, ( n -- ) dup c, 8 rshift c, ;
+: l, ( n -- ) dup s, 16 rshift s, ;
 : sockaddr   create 16 c, AF_INET c, 0 bs, 0 l, 0 l, 0 l, ;
-: ->port@ ( a -- n ) 2 + >r r@ c@ 256 * r> 1+ c@ + ;
-: ->port! ( n a --  ) 2 + >r dup 256 / r@ c! r> 1+ c! ;
+: ->port@ ( a -- n ) 2 + >r r@ c@ 8 lshift r> 1+ c@ + ;
+: ->port! ( n a --  ) 2 + >r dup 8 rshift r@ c! r> 1+ c! ;
 : ->addr@ ( a -- n ) 4 + ul@ ;
 : ->addr! ( n a --  ) 4 + l! ;
 : ->h_addr ( hostent -- n ) 2 cells + 8 + @ @ ul@ ;
+: ip# ( n -- n ) dup 255 and n. [char] . emit 8 rshift ;
+: ip. ( n -- ) ip# ip# ip# 255 and n. ;
 forth definitions
 
 vocabulary interrupts   interrupts definitions
diff --git a/esp32/web_interface.fs b/esp32/web_interface.fs
index 116a552..e473bae 100644
--- a/esp32/web_interface.fs
+++ b/esp32/web_interface.fs
@@ -16,12 +16,7 @@
 
 :noname [ ' web-interface >body @ ] literal execute
 r|
-also streams also WiFi also web-interface definitions
-
-: ip# dup 255 and n. [char] . emit 256 / ;
-: ip. ( n -- ) ip# ip# ip# 255 and . ;
-
-also forth definitions
+also streams also WiFi also web-interface
 
 : login ( z z -- )
    WIFI_MODE_STA Wifi.mode
diff --git a/examples/udp.fs b/examples/udp.fs
index f7b4213..0876104 100644
--- a/examples/udp.fs
+++ b/examples/udp.fs
@@ -2,34 +2,35 @@
 
 also sockets
 also tasks
-also posix
 
 1024 constant max-msg
 create msg max-msg allot
+variable len max-msg len !
 -1 value sockfd
 
-variable len max-msg len !
+sockaddr incoming
+sockaddr outgoing
+
+sockaddr received
+variable received-len sizeof(sockaddr_in) received-len !
+
 : reader
     begin
-        sockfd msg len 0 0 0 recvfrom
+        sockfd msg len 0 received received-len recvfrom
         dup 0 >= if
-          msg swap type cr
+          received ->addr@ ip. ." :" received ->port@ . space space msg swap type cr
         else drop then
         pause
     again
 ;
 ' reader 10 10 task reader-task
 
-sockaddr incoming
-sockaddr outgoing
-
 : udp ( port -- )
   incoming ->port!
   AF_INET SOCK_DGRAM 0 socket to sockfd
   sockfd non-block throw
   sockfd incoming sizeof(sockaddr_in) bind throw
   reader-task start-task
-  stdin non-block throw
 ;
 
 : say ( port -- )
diff --git a/posix/sockets.fs b/posix/sockets.fs
index b6d3510..c745d92 100644
--- a/posix/sockets.fs
+++ b/posix/sockets.fs
@@ -42,15 +42,17 @@ z" gethostbyname" 1 sysfunc gethostbyname
 1 constant SOL_SOCKET
 2 constant SO_REUSEADDR
 
-: bs, ( n -- ) dup 256 / c, c, ;
-: s, ( n -- ) dup c, 256 / c, ;
-: l, ( n -- ) dup s, 65536 / s, ;
+: bs, ( n -- ) dup 8 rshift c, c, ;
+: s, ( n -- ) dup c, 8 rshift c, ;
+: l, ( n -- ) dup s, 16 rshift s, ;
 : sockaddr   create AF_INET s, 0 bs, 0 l, 0 l, 0 l, ;
-: ->port@ ( a -- n ) 2 + >r r@ c@ 256 * r> 1+ c@ + ;
-: ->port! ( n a --  ) 2 + >r dup 256 / r@ c! r> 1+ c! ;
+: ->port@ ( a -- n ) 2 + >r r@ c@ 8 lshift r> 1+ c@ + ;
+: ->port! ( n a --  ) 2 + >r dup 8 rshift r@ c! r> 1+ c! ;
 : ->addr@ ( a -- n ) 4 + ul@ ;
 : ->addr! ( n a --  ) 4 + l! ;
 : ->h_addr ( hostent -- n ) 2 cells + 8 + @ @ ul@ ;
+: ip# ( n -- n ) dup 255 and n. [char] . emit 8 rshift ;
+: ip. ( n -- ) ip# ip# ip# 255 and n. ;
 
 ( Fixup return )
 : sockaccept sockaccept sign-extend ;