bwilliams
c9f42b62ad
which runs a plain TCP server for receiving websocket hub clients, with server config, CSRF and rate limit middleware. - internal/websocket: Hub pushing messages to WebSocket clients (ServeHTTP, example.com/ws upgrade with optional CSRF check) and plain TCP clients (ServeTCP, newline-delimited JSON envelopes); ping/pong keepalive, per-client message rate limit, slow consumer handling, graceful Shutdown, debug logging of messages sent and received - internal/websocket/tcpserver: standalone TCP server for a hub, with accept back-off, a per-IP connection limit (server.websocket.connection_limit) and graceful shutdown - internal/cli/wsserve: `wsserve` command running the TCP server, with --listen/--host/--port overrides - internal/middleware: keyed token bucket rate limiter, real client IP from trusted proxies - internal/httpx: RFC 9457 problem responses, request IDs in context - internal/config: server section (host, port, shutdown timeout, rate limiter idle TTL, websocket); util.ByteSize settings (e.g. "32KiB"); lists of sections as single keys; empty lists stored as nil; isExplicitlySet for printLoadedConfig; JobSearchConfigSource renamed to JSCSourcesSource; TestSections checks every section's methods - internal/util: ByteSize, parsed and formatted with go-humanize
94 lines
2.7 KiB
Go
94 lines
2.7 KiB
Go
package websocket
|
|
|
|
import (
|
|
"bufio"
|
|
"context"
|
|
"errors"
|
|
"net"
|
|
"testing"
|
|
"time"
|
|
|
|
"git.avsdev.uk/Go/job-search/internal/config"
|
|
)
|
|
|
|
// pipeClient runs a plain TCP client of h on an in-memory pipe and reads its
|
|
// welcome. It returns the peer's end, which the test stops reading from to
|
|
// make the client's writes block, and a channel closed when ServeTCP returns.
|
|
func pipeClient(t *testing.T, h *Hub) (net.Conn, chan struct{}) {
|
|
t.Helper()
|
|
server, peer := net.Pipe()
|
|
t.Cleanup(func() { server.Close(); peer.Close() })
|
|
done := make(chan struct{})
|
|
go func() { h.ServeTCP(context.Background(), server); close(done) }()
|
|
peer.SetReadDeadline(time.Now().Add(time.Second))
|
|
if _, err := bufio.NewReader(peer).ReadString('\n'); err != nil {
|
|
t.Fatalf("welcome: %v", err)
|
|
}
|
|
waitCount(t, h, 1)
|
|
return peer, done
|
|
}
|
|
|
|
// If ctx expires before the clients have closed, Shutdown closes the rest at
|
|
// once and returns ctx's error.
|
|
func TestShutdownTimeout(t *testing.T) {
|
|
// No write timeout: the client's goodbye blocks until it is cut short.
|
|
h := NewHub(config.JSCServerWebSocket{}, discardLog)
|
|
_, done := pipeClient(t, h)
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 20*time.Millisecond)
|
|
defer cancel()
|
|
if err := h.Shutdown(ctx); !errors.Is(err, context.DeadlineExceeded) {
|
|
t.Fatalf("Shutdown = %v; want context.DeadlineExceeded", err)
|
|
}
|
|
select {
|
|
case <-done:
|
|
case <-time.After(time.Second):
|
|
t.Fatal("client not closed after the shutdown timeout")
|
|
}
|
|
}
|
|
|
|
// Shutdown with no clients returns at once, even with an expired ctx.
|
|
func TestShutdownNoClients(t *testing.T) {
|
|
h := NewHub(config.JSCServerWebSocket{}, discardLog)
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
cancel()
|
|
for range 20 {
|
|
if err := h.Shutdown(ctx); err != nil {
|
|
t.Fatalf("Shutdown = %v; want nil", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
// A ping that can't be sent within the pong timeout drops the client.
|
|
func TestPingFailureDropsClient(t *testing.T) {
|
|
h := NewHub(config.JSCServerWebSocket{
|
|
PingInterval: 10 * time.Millisecond,
|
|
PongTimeout: 20 * time.Millisecond,
|
|
}, discardLog)
|
|
_, done := pipeClient(t, h)
|
|
|
|
select {
|
|
case <-done:
|
|
case <-time.After(time.Second):
|
|
t.Fatal("client not dropped after a failed ping")
|
|
}
|
|
waitCount(t, h, 0)
|
|
}
|
|
|
|
func TestMaxMessageSize(t *testing.T) {
|
|
tests := []struct {
|
|
conf config.JSCServerWebSocket
|
|
want int
|
|
}{
|
|
{config.JSCServerWebSocket{}, defaultMaxMessageSize},
|
|
{config.JSCServerWebSocket{MaxMessageSize: -1}, defaultMaxMessageSize},
|
|
{config.JSCServerWebSocket{MaxMessageSize: 100}, 100},
|
|
}
|
|
for _, tt := range tests {
|
|
h := NewHub(tt.conf, discardLog)
|
|
if got := h.maxMessageSize(); got != tt.want {
|
|
t.Errorf("maxMessageSize(%d) = %d; want %d", tt.conf.MaxMessageSize, got, tt.want)
|
|
}
|
|
}
|
|
}
|