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v/vlib/net/websocket/websocket_test.v

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import os
import net
import net.websocket
import time
import rand
struct WebsocketTestResults {
pub mut:
nr_messages int
nr_pong_received int
}
// Do not run these tests everytime, since they are flaky.
// They have their own specialized CI runner.
const github_job = os.getenv('GITHUB_JOB')
const should_skip = get_should_skip()
fn get_should_skip() bool {
return github_job != '' && github_job != 'websocket_tests'
}
// tests with internal ws servers
fn test_ws_ipv6() {
if should_skip {
return
}
port := 30000 + rand.intn(1024) or { 0 }
eprintln('> port ipv6: $port')
go start_server(.ip6, port)
time.sleep(1500 * time.millisecond)
ws_test(.ip6, 'ws://localhost:$port') or {
eprintln('> error while connecting .ip6, err: $err')
assert false
}
}
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// tests with internal ws servers
fn test_ws_ipv4() {
if should_skip {
return
}
port := 30000 + rand.intn(1024) or { 0 }
eprintln('> port ipv4: $port')
go start_server(.ip, port)
time.sleep(1500 * time.millisecond)
ws_test(.ip, 'ws://localhost:$port') or {
eprintln('> error while connecting .ip, err: $err')
assert false
}
}
fn start_server(family net.AddrFamily, listen_port int) ! {
mut s := websocket.new_server(family, listen_port, '')
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// make that in execution test time give time to execute at least one time
s.ping_interval = 1
s.on_connect(fn (mut s websocket.ServerClient) !bool {
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// here you can look att the client info and accept or not accept
// just returning a true/false
if s.resource_name != '/' {
panic('unexpected resource name in test')
return false
}
return true
})!
s.on_message(fn (mut ws websocket.Client, msg &websocket.Message) ! {
match msg.opcode {
.pong { ws.write_string('pong')! }
else { ws.write(msg.payload, msg.opcode)! }
}
})
s.on_close(fn (mut ws websocket.Client, code int, reason string) ! {
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// not used
})
s.listen() or { panic('websocket server could not listen, err: $err') }
}
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// ws_test tests connect to the websocket server from websocket client
fn ws_test(family net.AddrFamily, uri string) ! {
eprintln('connecting to $uri ...')
mut test_results := WebsocketTestResults{}
mut ws := websocket.new_client(uri)!
ws.on_open(fn (mut ws websocket.Client) ! {
ws.pong()!
assert true
})
ws.on_error(fn (mut ws websocket.Client, err string) ! {
println('error: $err')
// this can be thrown by internet connection problems
assert false
})
ws.on_message_ref(fn (mut ws websocket.Client, msg &websocket.Message, mut res WebsocketTestResults) ! {
println('client got type: $msg.opcode payload:\n$msg.payload')
if msg.opcode == .text_frame {
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smessage := msg.payload.bytestr()
match smessage {
'pong' {
res.nr_pong_received++
}
'a' {
res.nr_messages++
}
else {
assert false
}
}
} else {
println('Binary message: $msg')
}
}, test_results)
ws.connect() or { panic('fail to connect, err: $err') }
go ws.listen()
text := ['a'].repeat(2)
for msg in text {
ws.write(msg.bytes(), .text_frame) or { panic('fail to write to websocket, err: $err') }
// sleep to give time to recieve response before send a new one
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time.sleep(100 * time.millisecond)
}
// sleep to give time to recieve response before asserts
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time.sleep(1500 * time.millisecond)
// We expect at least 2 pongs, one sent directly and one indirectly
assert test_results.nr_pong_received >= 2
assert test_results.nr_messages == 2
}