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174 lines
4.4 KiB
174 lines
4.4 KiB
package server
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import (
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"context"
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"crypto/tls"
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"errors"
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"fmt"
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"io"
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"net"
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"net/http"
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"net/http/httptest"
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"sync"
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"sync/atomic"
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"testing"
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"time"
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"github.com/fortytw2/leaktest"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/tendermint/tendermint/libs/log"
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rpctypes "github.com/tendermint/tendermint/rpc/jsonrpc/types"
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)
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type sampleResult struct {
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Value string `json:"value"`
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}
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func TestMaxOpenConnections(t *testing.T) {
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const max = 5 // max simultaneous connections
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t.Cleanup(leaktest.Check(t))
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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logger := log.NewNopLogger()
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// Start the server.
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var open int32
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mux := http.NewServeMux()
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mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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if n := atomic.AddInt32(&open, 1); n > int32(max) {
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t.Errorf("%d open connections, want <= %d", n, max)
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}
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defer atomic.AddInt32(&open, -1)
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time.Sleep(10 * time.Millisecond)
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fmt.Fprint(w, "some body")
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})
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config := DefaultConfig()
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l, err := Listen("tcp://127.0.0.1:0", max)
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require.NoError(t, err)
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defer l.Close()
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go Serve(ctx, l, mux, logger, config) //nolint:errcheck // ignore for tests
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// Make N GET calls to the server.
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attempts := max * 2
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var wg sync.WaitGroup
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var failed int32
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for i := 0; i < attempts; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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c := http.Client{Timeout: 3 * time.Second}
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r, err := c.Get("http://" + l.Addr().String())
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if err != nil {
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atomic.AddInt32(&failed, 1)
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return
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}
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defer r.Body.Close()
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}()
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}
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wg.Wait()
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// We expect some Gets to fail as the server's accept queue is filled,
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// but most should succeed.
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if int(failed) >= attempts/2 {
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t.Errorf("%d requests failed within %d attempts", failed, attempts)
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}
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}
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func TestServeTLS(t *testing.T) {
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t.Cleanup(leaktest.Check(t))
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ln, err := net.Listen("tcp", "localhost:0")
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require.NoError(t, err)
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defer ln.Close()
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mux := http.NewServeMux()
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mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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fmt.Fprint(w, "some body")
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})
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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logger := log.NewNopLogger()
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chErr := make(chan error, 1)
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go func() {
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select {
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case chErr <- ServeTLS(ctx, ln, mux, "test.crt", "test.key", logger, DefaultConfig()):
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case <-ctx.Done():
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}
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}()
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select {
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case err := <-chErr:
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require.NoError(t, err)
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case <-time.After(100 * time.Millisecond):
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}
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tr := &http.Transport{
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TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
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}
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c := &http.Client{Transport: tr}
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res, err := c.Get("https://" + ln.Addr().String())
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require.NoError(t, err)
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defer res.Body.Close()
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assert.Equal(t, http.StatusOK, res.StatusCode)
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body, err := io.ReadAll(res.Body)
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require.NoError(t, err)
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assert.Equal(t, []byte("some body"), body)
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}
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func TestWriteRPCResponse(t *testing.T) {
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id := rpctypes.JSONRPCIntID(-1)
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// one argument
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w := httptest.NewRecorder()
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logger := log.NewNopLogger()
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writeRPCResponse(w, logger,
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rpctypes.NewRPCSuccessResponse(id, &sampleResult{"hello"}))
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resp := w.Result()
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body, err := io.ReadAll(resp.Body)
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_ = resp.Body.Close()
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require.NoError(t, err)
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assert.Equal(t, 200, resp.StatusCode)
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assert.Equal(t, "application/json", resp.Header.Get("Content-Type"))
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assert.Equal(t, "", resp.Header.Get("Cache-control"))
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assert.Equal(t, `{"jsonrpc":"2.0","id":-1,"result":{"value":"hello"}}`, string(body))
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// multiple arguments
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w = httptest.NewRecorder()
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writeRPCResponse(w, logger,
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rpctypes.NewRPCSuccessResponse(id, &sampleResult{"hello"}),
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rpctypes.NewRPCSuccessResponse(id, &sampleResult{"world"}),
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)
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resp = w.Result()
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body, err = io.ReadAll(resp.Body)
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_ = resp.Body.Close()
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require.NoError(t, err)
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assert.Equal(t, 200, resp.StatusCode)
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assert.Equal(t, "application/json", resp.Header.Get("Content-Type"))
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assert.Equal(t, `[{"jsonrpc":"2.0","id":-1,"result":{"value":"hello"}},`+
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`{"jsonrpc":"2.0","id":-1,"result":{"value":"world"}}]`, string(body))
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}
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func TestWriteHTTPResponse(t *testing.T) {
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w := httptest.NewRecorder()
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logger := log.NewNopLogger()
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writeHTTPResponse(w, logger,
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rpctypes.RPCInternalError(rpctypes.JSONRPCIntID(-1), errors.New("foo")))
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resp := w.Result()
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body, err := io.ReadAll(resp.Body)
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_ = resp.Body.Close()
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require.NoError(t, err)
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assert.Equal(t, http.StatusOK, resp.StatusCode)
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assert.Equal(t, "application/json", resp.Header.Get("Content-Type"))
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assert.Equal(t, `{"code":-32603,"message":"Internal error","data":"foo"}`, string(body))
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}
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