This example strives to incrementally demonstrate building an echo server with Swish.
Each code file can be run via swish -- filname.ss, then connect to
it using nc localhost 5300 typing input as desired. Use ^C to
shutdown.
| Example | Shows how to |
|---|---|
| echo1 | use the low-level API to send a constant string over a single TCP connection and close. This is not really an echo server, but it is starting from this issue. |
| echo2 | spawn a separate process to read and write data allowing multiple connections. |
| echo3 | use a gen-server to handle asynchronous input. This keeps the input port and output port separate so we can perform a blocking get-bytevector-some call without affecting the write side of the connection. |
| echo4 | use a gen-server to maintain a named server. This upgrades the processing loop, but starts the server directly. |
| echo5 | use supervision tree to get benefits of logging. This upgrades the startup to use the application and logging subsystems. You can find the log in data/Log.db3 |