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v/examples/websocket/ping.v

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module main
import time
import term
import net.websocket
fn main() {
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spawn start_server()
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time.sleep(100 * time.millisecond)
start_client()!
}
fn slog(message string) {
eprintln(term.colorize(term.bright_yellow, message))
}
fn clog(message string) {
eprintln(term.colorize(term.cyan, message))
}
fn wlog(message string) {
eprintln(term.colorize(term.bright_blue, message))
}
// start_server starts the websocket server, it receives messages
// and send it back to the client that sent it
fn start_server() ! {
mut s := websocket.new_server(.ip6, 30000, '')
defer {
unsafe {
s.free()
}
}
// Make that in execution test time give time to execute at least one time
s.ping_interval = 100
s.on_connect(fn (mut s websocket.ServerClient) !bool {
slog('ws.on_connect, s.client_key: ${s.client_key}')
// Here you can look att the client info and accept or not accept
// just returning a true/false
if s.resource_name != '/' {
return false
}
return true
})!
s.on_message(fn (mut ws websocket.Client, msg &websocket.Message) ! {
slog('s.on_message msg.opcode: ${msg.opcode} | msg.payload: ${msg.payload}')
ws.write(msg.payload, msg.opcode) or {
eprintln('ws.write err: ${err}')
return err
}
})
s.on_close(fn (mut ws websocket.Client, code int, reason string) ! {
slog('s.on_close code: ${code}, reason: ${reason}')
// println('client ($ws.id) closed connection')
})
s.listen() or {
slog('s.listen err: ${err}')
return err
}
slog('s.listen finished')
}
// start_client starts the websocket client, it writes a message to
// the server and prints all the messages received
fn start_client() ! {
mut ws := websocket.new_client('ws://localhost:30000')!
defer {
unsafe {
ws.free()
}
}
// mut ws := websocket.new_client('wss://echo.websocket.org:443')?
// use on_open_ref if you want to send any reference object
ws.on_open(fn (mut ws websocket.Client) ! {
clog('ws.on_open')
})
// use on_error_ref if you want to send any reference object
ws.on_error(fn (mut ws websocket.Client, err string) ! {
clog('ws.on_error error: ${err}')
})
// use on_close_ref if you want to send any reference object
ws.on_close(fn (mut ws websocket.Client, code int, reason string) ! {
clog('ws.on_close')
})
// use on_message_ref if you want to send any reference object
ws.on_message(fn (mut ws websocket.Client, msg &websocket.Message) ! {
if msg.payload.len > 0 {
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message := msg.payload.bytestr()
clog('ws.on_message client got type: ${msg.opcode} payload: `${message}`')
}
})
// you can add any pointer reference to use in callback
// t := TestRef{count: 10}
// ws.on_message_ref(fn (mut ws websocket.Client, msg &websocket.Message, r &SomeRef) ? {
// // eprintln('type: $msg.opcode payload:\n$msg.payload ref: $r')
// }, &r)
ws.connect() or {
clog('ws.connect err: ${err}')
return err
}
clog('ws.connect succeeded')
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spawn write_echo(mut ws) // or { println('error on write_echo $err') }
ws.listen() or {
clog('ws.listen err: ${err}')
return err
}
clog('ws.listen finished')
}
fn write_echo(mut ws websocket.Client) ! {
wlog('write_echo, start')
message := 'echo this'
for i := 0; i <= 5; i++ {
// Server will send pings every 30 seconds
wlog('write_echo, writing message: `${message}` ...')
ws.write_string(message) or {
wlog('write_echo, ws.write_string err: ${err}')
return err
}
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time.sleep(100 * time.millisecond)
}
ws.close(1000, 'normal') or {
wlog('write_echo, close err: ${err}')
return err
}
wlog('write_echo, done')
}