umbilical node.js通过tcp的双向rpc

脐带node.js进程之间的双向rpc。 npm install umbilical // "Server" var umbilical = require ( 'umbilical' ) var server = umbilical . endpoint ( { port : 1337 } , { add : function ( a , b , cb ) { cb ( null , a + b ) } , mul : function ( a , b , cb ) { cb ( null , a * b ) } } , function ( client ) { client . request ( 'hello' , function ( er , res ) { console . log ( res ) } ) //