passthrough.bal

import ballerina/http;
listener http:Listener securedEP = new(9090);
final http:Client nettyEP = check new("http://netty:8688");
service /passthrough on securedEP {
    resource function post .(http:Request req) returns http:Response|error{
        return nettyEP->forward("/service/EchoService", req);
    }
}