netserver exits early when netperf -s option use a too large delay seconds (>4s)

[fhvkqtdh]

netperf -s 15 -t TCP_STREAM -l 20

output:

MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to localhost () port 0 AF_INET : histogram : interval : dirty data : demo
send_data: data send error: Connection reset by peer (errno 104)
netperf: send_omni: send_data failed: Connection reset by peer

[fhvkqtdh]

src/nettest_bsd.c:5287

start_timer(tcp_stream_request->test_length + PAD_TIME);

The timer of test is (test_length+PAD_TIME) seconds, PAD_TIME = 4.
Can we add the delay seconds of netperf -s option to this timer?