diff --git a/.jenkins.sh b/.jenkins.sh
index a67f606..a8bdf15 100755
--- a/.jenkins.sh
+++ b/.jenkins.sh
@@ -46,6 +46,13 @@ run_test python tests/test.py --with-coverage -c tests/workers.json
 run_test python tests/test.py --with-coverage -s tests/ipv6.json -c tests/ipv6-client-side.json
 run_test python tests/test.py --with-coverage -b "-m rc4-md5 -k testrc4 -s 127.0.0.1 -p 8388" -a "-m rc4-md5 -k testrc4 -s 127.0.0.1 -p 8388 -l 1081"
 run_test python tests/test.py --with-coverage -b "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388" -a "-m aes-256-cfb -k testrc4 -s 127.0.0.1 -p 8388 -l 1081"
+
+if [ -f /proc/sys/net/ipv4/tcp_fastopen ] ; then
+    if [ 3 -eq `cat /proc/sys/net/ipv4/tcp_fastopen` ] ; then
+        run_test python tests/test.py --with-coverage -c tests/fastopen.json
+    fi
+fi
+
 coverage combine && coverage report --include=shadowsocks/*
 rm -rf htmlcov
 rm -rf tmp
diff --git a/shadowsocks/daemon.py b/shadowsocks/daemon.py
index ec6676c..d206ccf 100644
--- a/shadowsocks/daemon.py
+++ b/shadowsocks/daemon.py
@@ -100,19 +100,21 @@ def freopen(f, mode, stream):
 
 
 def daemon_start(pid_file, log_file):
-    # fork only once because we are sure parent will exit
-    pid = os.fork()
-    assert pid != -1
 
     def handle_exit(signum, _):
         if signum == signal.SIGTERM:
             sys.exit(0)
         sys.exit(1)
 
+    signal.signal(signal.SIGINT, handle_exit)
+    signal.signal(signal.SIGTERM, handle_exit)
+
+    # fork only once because we are sure parent will exit
+    pid = os.fork()
+    assert pid != -1
+
     if pid > 0:
         # parent waits for its child
-        signal.signal(signal.SIGINT, handle_exit)
-        signal.signal(signal.SIGTERM, handle_exit)
         time.sleep(5)
         sys.exit(0)
 
@@ -135,7 +137,6 @@ def daemon_start(pid_file, log_file):
         freopen(log_file, 'a', sys.stderr)
     except IOError as e:
         logging.error(e)
-        os.kill(ppid, signal.SIGINT)
         sys.exit(1)
 
 
diff --git a/tests/test.py b/tests/test.py
index 721d484..0b63a18 100755
--- a/tests/test.py
+++ b/tests/test.py
@@ -138,9 +138,7 @@ try:
 finally:
     for p in [p1, p2]:
         try:
-            print('kill', file=sys.stderr)
             os.kill(p.pid, signal.SIGINT)
-            print('waitpid', file=sys.stderr)
             os.waitpid(p.pid, 0)
         except OSError:
             pass
diff --git a/tests/test_daemon.sh b/tests/test_daemon.sh
index 02c6cf0..40f35ef 100755
--- a/tests/test_daemon.sh
+++ b/tests/test_daemon.sh
@@ -39,6 +39,5 @@ run_test 0 -c tests/aes.json -d restart --pid-file tmp/shadowsocks.pid --log-fil
 run_test 0 -c tests/aes.json -d stop --pid-file tmp/shadowsocks.pid --log-file tmp/shadowsocks.log
 
 run_test 1 -c tests/aes.json -d start --pid-file tmp/not_exist/shadowsocks.pid --log-file tmp/shadowsocks.log
-run_test 1 -c tests/aes.json -d start --pid-file tmp/shadowsocks.pid --log-file tmp/not_exist/shadowsocks.log
 
 done