syncthing/test/httpstress_test.go

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// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
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// +build integration
package integration
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import (
"bytes"
"crypto/tls"
"errors"
"io/ioutil"
"log"
"net"
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"net/http"
"sync"
"testing"
"time"
)
func TestStressHTTP(t *testing.T) {
log.Println("Cleaning...")
err := removeAll("s2", "h2/index*")
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if err != nil {
t.Fatal(err)
}
log.Println("Starting up...")
p := startInstance(t, 2)
defer checkedStop(t, p)
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// Create a client with reasonable timeouts on all stages of the request.
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tc := &tls.Config{InsecureSkipVerify: true}
tr := &http.Transport{
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TLSClientConfig: tc,
DisableKeepAlives: true,
ResponseHeaderTimeout: 10 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
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}
client := &http.Client{
Transport: tr,
Timeout: 10 * time.Second,
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}
var (
requestsOK = map[string]int{}
requestsError = map[string]int{}
firstError error
lock sync.Mutex
)
gotError := func(ctx string, err error) {
lock.Lock()
requestsError[ctx]++
if firstError == nil {
firstError = err
}
lock.Unlock()
}
requestOK := func(ctx string) {
lock.Lock()
requestsOK[ctx]++
lock.Unlock()
}
log.Println("Testing...")
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var wg sync.WaitGroup
t0 := time.Now()
// One thread with immediately closed connections
wg.Add(1)
go func() {
defer wg.Done()
for time.Since(t0).Seconds() < 30 {
conn, err := net.Dial("tcp", "localhost:8082")
if err != nil {
gotError("Dial", err)
} else {
requestOK("Dial")
conn.Close()
}
// At most 100 connects/sec
time.Sleep(10 * time.Millisecond)
}
}()
// 50 threads doing mixed HTTP and HTTPS requests
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for i := 0; i < 50; i++ {
i := i
wg.Add(1)
go func() {
defer wg.Done()
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for time.Since(t0).Seconds() < 30 {
proto := "http"
if i%2 == 0 {
proto = "https"
}
url := proto + "://localhost:8082/"
resp, err := client.Get(url)
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if err != nil {
gotError("Get "+proto, err)
continue
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}
bs, err := ioutil.ReadAll(resp.Body)
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resp.Body.Close()
if err != nil {
gotError("Read "+proto, err)
continue
}
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if !bytes.Contains(bs, []byte("</html>")) {
err := errors.New("Incorrect response")
gotError("Get "+proto, err)
continue
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}
requestOK(url)
// At most 100 requests/sec
time.Sleep(10 * time.Millisecond)
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}
}()
}
wg.Wait()
t.Logf("OK: %v reqs", requestsOK)
t.Logf("Err: %v reqs", requestsError)
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if firstError != nil {
t.Error(firstError)
}
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}