select max=2 rfds=[0] wfds=[] efds=[] to=null
select=1 rfds=[0] wfds=[] efds=[]
+2.095986
- recvfrom fd=6 buflen=512 *addrlen=16
+ recvfrom fd=6 buflen=512
recvfrom=EAGAIN
+0.000177
read fd=0 buflen=512
select max=2 rfds=[0] wfds=[] efds=[] to=null
select=1 rfds=[0] wfds=[] efds=[]
+0.349329
- recvfrom fd=6 buflen=512 *addrlen=16
+ recvfrom fd=6 buflen=512
recvfrom=EAGAIN
+0.000085
read fd=0 buflen=512