demo

[Geal]

with the current working version (as of commit f0e2f3e), here is how we can demonstrate the system:

• compile the program by running cargo build (needs rust installed)
• start the server with the configuration file: ./target/debug/serverless-wasm ./samples/config.toml
  • the configuration file maps some HTTP requests (like GET /hello) to specific functions in wasm files (samples/testfunc.wasm and samples/testbackend.wasm). The wasm files are already compiled and committed to the repository
• do a first request with:
  • curl http://127.0.0.1:8080/hello: the server will answer Hello world from wasm!
  • curl http://127.0.0.1:8080/bonjour: the server will answer Bonjour tout le monde depuis le monde merveilleux de WASM!
  • those to endpoints are served by the testfunc project, containing two functions that build a HTTP response and send it
• start a tcp listener on 127.0.0.1:8181 like this: nc -l -p 8181 (the port can be changed in the configuration file)
  • call the server on the remaining endpoint, served by testbackend:
    • curl http://127.0.0.1:8080/backend
    • the netcat listener will see a hello
    • if you type anything in the netcat shell and "enter", the text will be sent back as response to the client