I'm developing a backend server and here is how the architecture of the backend looks like:
APP --> Server1 --> Server2 --> Server3 --> MyServer
APP sends a HTTP request to the Server1
, and all of the servers at backend communicate each other with the method RPC, which is based on the TCP protocol.
I'm developing the MyServer
and since my job hasn't finished yet, I need to do many tests, but the Server3
is not always available.
I don't know what Server1
, Server2
and Server3
did and the RPC from Server3
to MyServer
is really complicated, it contains many parameters that I don't know. What I need is to capture a request from Server3
, copy it's content to a script so that I can run the script to simulate a request.
Let me make an example:
Server3
will send a RCP to MyServer
with the parameters p1
, p2
, p3
. For me, I only care about p3
, so I process the p3
, generate a new parameter p4
, and send p1
, p2
and p4
to another server. So I need to simulate a RPC from Server3
so that I can send whenever I need to test the MyServer
.
About protocol
Our team used a private framework, it has its own protocol to make a RPC. All I know is that the protocol is based on TCP, instead of HTTP. So what I need is to capture a request from Server3
and replay it whenever I need.