// Client machine log
// Successful transfer
2014.09.15 07:49:44 LOG7[5788]: Service [xymonclient] accepted (FD=396) from 127.0.0.1:65107
2014.09.15 07:49:44 LOG7[5788]: Creating a new thread
2014.09.15 07:49:44 LOG7[5788]: New thread created
2014.09.15 07:49:44 LOG7[6116]: Service [xymonclient] started
2014.09.15 07:49:44 LOG5[6116]: Service [xymonclient] accepted connection from 127.0.0.1:65107
2014.09.15 07:49:44 LOG6[6116]: s_connect: connecting <serverip>:1985
2014.09.15 07:49:44 LOG7[6116]: s_connect: s_poll_wait <serverip>:1985: waiting 10 seconds
2014.09.15 07:49:44 LOG5[6116]: s_connect: connected <serverip>:1985
2014.09.15 07:49:44 LOG5[6116]: Service [xymonclient] connected remote server from 192.168.1.2:65108
2014.09.15 07:49:44 LOG7[6116]: Remote socket (FD=376) initialized
2014.09.15 07:49:44 LOG7[6116]: SNI: sending servername: <serverDNSname>
2014.09.15 07:49:44 LOG7[6116]: SSL state (connect): before/connect initialization
2014.09.15 07:49:44 LOG7[6116]: SSL state (connect): SSLv3 write client hello A
2014.09.15 07:49:44 LOG7[6116]: SSL state (connect): SSLv3 read server hello A
2014.09.15 07:49:44 LOG7[6116]: SSL state (connect): SSLv3 read finished A
2014.09.15 07:49:44 LOG7[6116]: SSL state (connect): SSLv3 write change cipher spec A
2014.09.15 07:49:44 LOG7[6116]: SSL state (connect): SSLv3 write finished A
2014.09.15 07:49:44 LOG7[6116]: SSL state (connect): SSLv3 flush data
2014.09.15 07:49:44 LOG7[6116]:    4 items in the session cache
2014.09.15 07:49:44 LOG7[6116]:   34 client connects (SSL_connect())
2014.09.15 07:49:44 LOG7[6116]:   34 client connects that finished
2014.09.15 07:49:44 LOG7[6116]:    0 client renegotiations requested
2014.09.15 07:49:44 LOG7[6116]:    0 server connects (SSL_accept())
2014.09.15 07:49:44 LOG7[6116]:    0 server connects that finished
2014.09.15 07:49:44 LOG7[6116]:    0 server renegotiations requested
2014.09.15 07:49:44 LOG7[6116]:   30 session cache hits
2014.09.15 07:49:44 LOG7[6116]:    0 external session cache hits
2014.09.15 07:49:44 LOG7[6116]:    0 session cache misses
2014.09.15 07:49:44 LOG7[6116]:    0 session cache timeouts
2014.09.15 07:49:44 LOG6[6116]: SSL connected: previous session reused
2014.09.15 07:49:44 LOG6[6116]: Read socket closed (readsocket)
2014.09.15 07:49:44 LOG7[6116]: Sending close_notify alert
2014.09.15 07:49:44 LOG7[6116]: SSL alert (write): warning: close notify
2014.09.15 07:49:44 LOG6[6116]: SSL_shutdown successfully sent close_notify alert
2014.09.15 07:49:44 LOG7[6116]: SSL alert (read): warning: close notify
2014.09.15 07:49:44 LOG6[6116]: SSL closed (SSL_read)
2014.09.15 07:49:44 LOG7[6116]: Sent socket write shutdown
2014.09.15 07:49:44 LOG5[6116]: Connection closed: 27 byte(s) sent to SSL, 9 byte(s) sent to socket
2014.09.15 07:49:44 LOG7[6116]: Remote socket (FD=376) closed
2014.09.15 07:49:44 LOG7[6116]: Local socket (FD=396) closed
2014.09.15 07:49:44 LOG7[6116]: Service [xymonclient] finished (0 left)
2014.09.15 07:49:44 LOG7[6116]: str_stats: 3 block(s), 60 data byte(s), 150 control byte(s)
2014.09.15 07:49:44 LOG7[6116]: str_stats: 20 byte(s) at ..\src\network.c:413
2014.09.15 07:49:44 LOG7[6116]: str_stats: 20 byte(s) at ..\src\network.c:412
2014.09.15 07:49:44 LOG7[6116]: str_stats: 20 byte(s) at ..\src\network.c:411

// Unsuccessful transfer
2014.09.15 07:49:53 LOG7[5788]: Service [xymonclient] accepted (FD=248) from 127.0.0.1:65110
2014.09.15 07:49:53 LOG7[5788]: Creating a new thread
2014.09.15 07:49:53 LOG7[5788]: New thread created
2014.09.15 07:49:53 LOG7[2064]: Service [xymonclient] started
2014.09.15 07:49:53 LOG5[2064]: Service [xymonclient] accepted connection from 127.0.0.1:65110
2014.09.15 07:49:53 LOG6[2064]: s_connect: connecting <serverip>:1985
2014.09.15 07:49:53 LOG7[2064]: s_connect: s_poll_wait <serverip>:1985: waiting 10 seconds
2014.09.15 07:49:53 LOG5[2064]: s_connect: connected <serverip>:1985
2014.09.15 07:49:53 LOG5[2064]: Service [xymonclient] connected remote server from 192.168.1.2:65111
2014.09.15 07:49:53 LOG7[2064]: Remote socket (FD=376) initialized
2014.09.15 07:49:53 LOG7[2064]: SNI: sending servername: <serverDNSname>
2014.09.15 07:49:53 LOG7[2064]: SSL state (connect): before/connect initialization
2014.09.15 07:49:53 LOG7[2064]: SSL state (connect): SSLv3 write client hello A
2014.09.15 07:49:53 LOG7[2064]: SSL state (connect): SSLv3 read server hello A
2014.09.15 07:49:53 LOG7[2064]: SSL state (connect): SSLv3 read finished A
2014.09.15 07:49:53 LOG7[2064]: SSL state (connect): SSLv3 write change cipher spec A
2014.09.15 07:49:53 LOG7[2064]: SSL state (connect): SSLv3 write finished A
2014.09.15 07:49:53 LOG7[2064]: SSL state (connect): SSLv3 flush data
2014.09.15 07:49:53 LOG7[2064]:    4 items in the session cache
2014.09.15 07:49:53 LOG7[2064]:   35 client connects (SSL_connect())
2014.09.15 07:49:53 LOG7[2064]:   35 client connects that finished
2014.09.15 07:49:53 LOG7[2064]:    0 client renegotiations requested
2014.09.15 07:49:53 LOG7[2064]:    0 server connects (SSL_accept())
2014.09.15 07:49:53 LOG7[2064]:    0 server connects that finished
2014.09.15 07:49:53 LOG7[2064]:    0 server renegotiations requested
2014.09.15 07:49:53 LOG7[2064]:   31 session cache hits
2014.09.15 07:49:53 LOG7[2064]:    0 external session cache hits
2014.09.15 07:49:53 LOG7[2064]:    0 session cache misses
2014.09.15 07:49:53 LOG7[2064]:    0 session cache timeouts
2014.09.15 07:49:53 LOG6[2064]: SSL connected: previous session reused
2014.09.15 07:49:53 LOG6[2064]: Read socket closed (readsocket)
2014.09.15 07:49:53 LOG7[2064]: Sending close_notify alert
2014.09.15 07:49:53 LOG7[2064]: SSL alert (write): warning: close notify
2014.09.15 07:49:53 LOG6[2064]: SSL_shutdown successfully sent close_notify alert
2014.09.15 07:49:53 LOG7[2064]: SSL alert (read): warning: close notify
2014.09.15 07:49:53 LOG6[2064]: SSL closed (SSL_read)
2014.09.15 07:49:53 LOG7[2064]: Sent socket write shutdown
2014.09.15 07:49:53 LOG5[2064]: Connection closed: 27 byte(s) sent to SSL, 0 byte(s) sent to socket
2014.09.15 07:49:53 LOG7[2064]: Remote socket (FD=376) closed
2014.09.15 07:49:53 LOG7[2064]: Local socket (FD=248) closed
2014.09.15 07:49:53 LOG7[2064]: Service [xymonclient] finished (0 left)
2014.09.15 07:49:53 LOG7[2064]: str_stats: 3 block(s), 60 data byte(s), 150 control byte(s)
2014.09.15 07:49:53 LOG7[2064]: str_stats: 20 byte(s) at ..\src\network.c:413
2014.09.15 07:49:53 LOG7[2064]: str_stats: 20 byte(s) at ..\src\network.c:412
2014.09.15 07:49:53 LOG7[2064]: str_stats: 20 byte(s) at ..\src\network.c:411


// Server machine log
// Server stunnel startup
2014.09.15 12:48:20 LOG7[31394]: Clients allowed=500
2014.09.15 12:48:20 LOG5[31394]: stunnel 5.02 on x86_64-unknown-linux-gnu platform
2014.09.15 12:48:20 LOG5[31394]: Compiled/running with OpenSSL 1.0.1f 6 Jan 2014
2014.09.15 12:48:20 LOG5[31394]: Threading:PTHREAD Sockets:POLL,IPv6 SSL:ENGINE,OCSP,FIPS
2014.09.15 12:48:20 LOG7[31394]: errno: (*__errno_location ())
2014.09.15 12:48:20 LOG5[31394]: Reading configuration from file /etc/stunnel/stunnel.conf
2014.09.15 12:48:20 LOG5[31394]: FIPS mode disabled
2014.09.15 12:48:20 LOG7[31394]: Compression disabled
2014.09.15 12:48:20 LOG7[31394]: Snagged 64 random bytes from /dev/urandom
2014.09.15 12:48:20 LOG7[31394]: PRNG seeded successfully
2014.09.15 12:48:20 LOG6[31394]: Initializing service [pop3s]
2014.09.15 12:48:20 LOG6[31394]: Loading cert from file: /etc/stunnel/stunnel_server.pem
2014.09.15 12:48:20 LOG6[31394]: Loading key from file: /etc/stunnel/stunnel_server.pem
2014.09.15 12:48:20 LOG7[31394]: Private key check succeeded
2014.09.15 12:48:20 LOG7[31394]: DH initialization
2014.09.15 12:48:20 LOG7[31394]: Could not load DH parameters from /etc/stunnel/stunnel_server.pem
2014.09.15 12:48:20 LOG7[31394]: Using hardcoded DH parameters
2014.09.15 12:48:20 LOG7[31394]: DH initialized with 2048-bit key
2014.09.15 12:48:20 LOG7[31394]: ECDH initialization
2014.09.15 12:48:20 LOG7[31394]: ECDH initialized with curve prime256v1
2014.09.15 12:48:20 LOG7[31394]: SSL options set: 0x01180004
2014.09.15 12:48:20 LOG6[31394]: Initializing service [imaps]
2014.09.15 12:48:20 LOG6[31394]: Loading cert from file: /etc/stunnel/stunnel_server.pem
2014.09.15 12:48:20 LOG6[31394]: Loading key from file: /etc/stunnel/stunnel_server.pem
2014.09.15 12:48:20 LOG7[31394]: Private key check succeeded
2014.09.15 12:48:20 LOG7[31394]: DH initialization
2014.09.15 12:48:20 LOG7[31394]: Could not load DH parameters from /etc/stunnel/stunnel_server.pem
2014.09.15 12:48:20 LOG7[31394]: Using hardcoded DH parameters
2014.09.15 12:48:20 LOG7[31394]: DH initialized with 2048-bit key
2014.09.15 12:48:20 LOG7[31394]: ECDH initialization
2014.09.15 12:48:20 LOG7[31394]: ECDH initialized with curve prime256v1
2014.09.15 12:48:20 LOG7[31394]: SSL options set: 0x01180004
2014.09.15 12:48:20 LOG6[31394]: Initializing service [ssmtp]
2014.09.15 12:48:20 LOG6[31394]: Loading cert from file: /etc/stunnel/stunnel_server.pem
2014.09.15 12:48:20 LOG6[31394]: Loading key from file: /etc/stunnel/stunnel_server.pem
2014.09.15 12:48:20 LOG7[31394]: Private key check succeeded
2014.09.15 12:48:20 LOG7[31394]: DH initialization
2014.09.15 12:48:20 LOG7[31394]: Could not load DH parameters from /etc/stunnel/stunnel_server.pem
2014.09.15 12:48:20 LOG7[31394]: Using hardcoded DH parameters
2014.09.15 12:48:20 LOG7[31394]: DH initialized with 2048-bit key
2014.09.15 12:48:20 LOG7[31394]: ECDH initialization
2014.09.15 12:48:20 LOG7[31394]: ECDH initialized with curve prime256v1
2014.09.15 12:48:20 LOG7[31394]: SSL options set: 0x01180004
2014.09.15 12:48:20 LOG6[31394]: Initializing service [xymonserver]
2014.09.15 12:48:20 LOG6[31394]: Loading cert from file: /etc/stunnel/xyservercert.pem
2014.09.15 12:48:20 LOG6[31394]: Loading key from file: /etc/stunnel/xyserverkey.pem
2014.09.15 12:48:20 LOG7[31394]: Private key check succeeded
2014.09.15 12:48:20 LOG7[31394]: Loaded /etc/stunnel/xyclientcert.pem revocation lookup file
2014.09.15 12:48:20 LOG7[31394]: Client CA list: /etc/stunnel/xyclientcert.pem
2014.09.15 12:48:20 LOG6[31394]: Client CA: <myCA>
2014.09.15 12:48:20 LOG7[31394]: DH initialization
2014.09.15 12:48:20 LOG7[31394]: Could not load DH parameters from /etc/stunnel/xyservercert.pem
2014.09.15 12:48:20 LOG7[31394]: Using hardcoded DH parameters
2014.09.15 12:48:20 LOG7[31394]: DH initialized with 2048-bit key
2014.09.15 12:48:20 LOG7[31394]: ECDH initialization
2014.09.15 12:48:20 LOG7[31394]: ECDH initialized with curve prime256v1
2014.09.15 12:48:20 LOG7[31394]: SSL options set: 0x01180004
2014.09.15 12:48:20 LOG5[31394]: Configuration successful
2014.09.15 12:48:20 LOG7[31394]: Service [pop3s] (FD=7) bound to 0.0.0.0:995
2014.09.15 12:48:20 LOG7[31394]: Service [imaps] (FD=8) bound to 0.0.0.0:993
2014.09.15 12:48:20 LOG7[31394]: Service [ssmtp] (FD=9) bound to 0.0.0.0:465
2014.09.15 12:48:20 LOG7[31394]: Service [xymonserver] (FD=10) bound to 0.0.0.0:1985
2014.09.15 12:48:20 LOG7[31395]: Created pid file /stunnel4.pid

// Successful transaction
2014.09.15 12:49:48 LOG7[31395]: Service [xymonserver] accepted (FD=12) from <clientip>:65108
2014.09.15 12:49:48 LOG7[32061]: Service [xymonserver] started
2014.09.15 12:49:48 LOG5[32061]: Service [xymonserver] accepted connection from <clientip>:65108
2014.09.15 12:49:48 LOG7[32061]: SSL state (accept): before/accept initialization
2014.09.15 12:49:48 LOG7[32061]: SNI: no virtual services defined
2014.09.15 12:49:48 LOG7[32061]: SSL state (accept): SSLv3 read client hello A
2014.09.15 12:49:48 LOG7[32061]: SSL state (accept): SSLv3 write server hello A
2014.09.15 12:49:48 LOG7[32061]: SSL state (accept): SSLv3 write change cipher spec A
2014.09.15 12:49:48 LOG7[32061]: SSL state (accept): SSLv3 write finished A
2014.09.15 12:49:48 LOG7[32061]: SSL state (accept): SSLv3 flush data
2014.09.15 12:49:48 LOG7[32061]: SSL state (accept): SSLv3 read finished A
2014.09.15 12:49:48 LOG7[32061]:    0 items in the session cache
2014.09.15 12:49:48 LOG7[32061]:    0 client connects (SSL_connect())
2014.09.15 12:49:48 LOG7[32061]:    0 client connects that finished
2014.09.15 12:49:48 LOG7[32061]:    0 client renegotiations requested
2014.09.15 12:49:48 LOG7[32061]:  114 server connects (SSL_accept())
2014.09.15 12:49:48 LOG7[32061]:  114 server connects that finished
2014.09.15 12:49:48 LOG7[32061]:    0 server renegotiations requested
2014.09.15 12:49:48 LOG7[32061]:   89 session cache hits
2014.09.15 12:49:48 LOG7[32061]:    0 external session cache hits
2014.09.15 12:49:48 LOG7[32061]:    0 session cache misses
2014.09.15 12:49:48 LOG7[32061]:    0 session cache timeouts
2014.09.15 12:49:48 LOG6[32061]: SSL accepted: previous session reused
2014.09.15 12:49:48 LOG6[32061]: s_connect: connecting 127.0.0.1:1984
2014.09.15 12:49:48 LOG7[32061]: s_connect: s_poll_wait 127.0.0.1:1984: waiting 10 seconds
2014.09.15 12:49:48 LOG5[32061]: s_connect: connected 127.0.0.1:1984
2014.09.15 12:49:48 LOG5[32061]: Service [xymonserver] connected remote server from 127.0.0.1:34279
2014.09.15 12:49:48 LOG7[32061]: Remote socket (FD=3) initialized
2014.09.15 12:49:48 LOG7[32061]: readSSL: download ...............lst
2014.09.15 12:49:48 LOG7[32061]: writesocket: download ...............lst
2014.09.15 12:49:48 LOG7[32061]: SSL alert (read): warning: close notify
2014.09.15 12:49:48 LOG6[32061]: SSL closed (SSL_read)
2014.09.15 12:49:48 LOG7[32061]: Sent socket write shutdown
2014.09.15 12:49:48 LOG7[32061]: readsocket: .........
2014.09.15 12:49:48 LOG7[32061]: writeSSL: .........
2014.09.15 12:49:48 LOG6[32061]: Read socket closed (hangup)
2014.09.15 12:49:48 LOG6[32061]: Write socket closed (hangup)
2014.09.15 12:49:48 LOG7[32061]: Sending close_notify alert
2014.09.15 12:49:48 LOG7[32061]: SSL alert (write): warning: close notify
2014.09.15 12:49:48 LOG6[32061]: SSL_shutdown successfully sent close_notify alert
2014.09.15 12:49:48 LOG5[32061]: Connection closed: 9 byte(s) sent to SSL, 27 byte(s) sent to socket
2014.09.15 12:49:48 LOG7[32061]: Remote socket (FD=3) closed
2014.09.15 12:49:48 LOG7[32061]: Local socket (FD=12) closed
2014.09.15 12:49:48 LOG7[32061]: Service [xymonserver] finished (0 left)
2014.09.15 12:49:48 LOG7[32061]: str_stats: 0 block(s), 18446744073709549628 data byte(s), 0 control byte(s)

// Unsuccessful transfer
2014.09.15 12:49:56 LOG7[31395]: Service [xymonserver] accepted (FD=12) from <clientip>:65111
2014.09.15 12:49:56 LOG7[32182]: Service [xymonserver] started
2014.09.15 12:49:56 LOG5[32182]: Service [xymonserver] accepted connection from <clientip>:65111
2014.09.15 12:49:56 LOG7[32182]: SSL state (accept): before/accept initialization
2014.09.15 12:49:57 LOG7[32182]: SNI: no virtual services defined
2014.09.15 12:49:57 LOG7[32182]: SSL state (accept): SSLv3 read client hello A
2014.09.15 12:49:57 LOG7[32182]: SSL state (accept): SSLv3 write server hello A
2014.09.15 12:49:57 LOG7[32182]: SSL state (accept): SSLv3 write change cipher spec A
2014.09.15 12:49:57 LOG7[32182]: SSL state (accept): SSLv3 write finished A
2014.09.15 12:49:57 LOG7[32182]: SSL state (accept): SSLv3 flush data
2014.09.15 12:49:57 LOG7[32182]: SSL state (accept): SSLv3 read finished A
2014.09.15 12:49:57 LOG7[32182]:    0 items in the session cache
2014.09.15 12:49:57 LOG7[32182]:    0 client connects (SSL_connect())
2014.09.15 12:49:57 LOG7[32182]:    0 client connects that finished
2014.09.15 12:49:57 LOG7[32182]:    0 client renegotiations requested
2014.09.15 12:49:57 LOG7[32182]:  137 server connects (SSL_accept())
2014.09.15 12:49:57 LOG7[32182]:  136 server connects that finished
2014.09.15 12:49:57 LOG7[32182]:    0 server renegotiations requested
2014.09.15 12:49:57 LOG7[32182]:  108 session cache hits
2014.09.15 12:49:57 LOG7[32182]:    0 external session cache hits
2014.09.15 12:49:57 LOG7[32182]:    0 session cache misses
2014.09.15 12:49:57 LOG7[32182]:    0 session cache timeouts
2014.09.15 12:49:57 LOG6[32182]: SSL accepted: previous session reused
2014.09.15 12:49:57 LOG6[32182]: s_connect: connecting 127.0.0.1:1984
2014.09.15 12:49:57 LOG7[32182]: s_connect: s_poll_wait 127.0.0.1:1984: waiting 10 seconds
2014.09.15 12:49:57 LOG5[32182]: s_connect: connected 127.0.0.1:1984
2014.09.15 12:49:57 LOG5[32182]: Service [xymonserver] connected remote server from 127.0.0.1:34304
2014.09.15 12:49:57 LOG7[32182]: Remote socket (FD=13) initialized
2014.09.15 12:49:57 LOG7[32182]: readSSL: download ...............lst
2014.09.15 12:49:57 LOG7[32182]: writesocket: download ...............lst
2014.09.15 12:49:57 LOG7[32182]: SSL alert (read): warning: close notify
2014.09.15 12:49:57 LOG6[32182]: SSL closed (SSL_read)
2014.09.15 12:49:57 LOG7[32182]: Sent socket write shutdown
2014.09.15 12:49:57 LOG6[32182]: Read socket closed (hangup)
2014.09.15 12:49:57 LOG6[32182]: Write socket closed (hangup)
2014.09.15 12:49:57 LOG7[32182]: Sending close_notify alert
2014.09.15 12:49:57 LOG7[32182]: SSL alert (write): warning: close notify
2014.09.15 12:49:57 LOG6[32182]: SSL_shutdown successfully sent close_notify alert
2014.09.15 12:49:57 LOG5[32182]: Connection closed: 0 byte(s) sent to SSL, 27 byte(s) sent to socket
2014.09.15 12:49:57 LOG7[32182]: Remote socket (FD=13) closed
2014.09.15 12:49:57 LOG7[32182]: Local socket (FD=12) closed
2014.09.15 12:49:57 LOG7[32182]: Service [xymonserver] finished (1 left)
2014.09.15 12:49:57 LOG7[32182]: str_stats: 0 block(s), 18446744073709549669 data byte(s), 0 control byte(s)


// Stunnel closedown
2014.09.15 12:50:07 LOG7[31395]: Dispatching signals from the signal pipe
2014.09.15 12:50:07 LOG7[31395]: Processing SIGNAL_TERMINATE
2014.09.15 12:50:07 LOG5[31395]: Terminated
2014.09.15 12:50:07 LOG7[31395]: Closing service [pop3s]
2014.09.15 12:50:07 LOG7[31395]: Service [pop3s] closed (FD=7)
2014.09.15 12:50:07 LOG7[31395]: Sessions cached before flush: 0
2014.09.15 12:50:07 LOG7[31395]: Sessions cached after flush: 0
2014.09.15 12:50:07 LOG7[31395]: Service [pop3s] closed
2014.09.15 12:50:07 LOG7[31395]: Closing service [imaps]
2014.09.15 12:50:07 LOG7[31395]: Service [imaps] closed (FD=8)
2014.09.15 12:50:07 LOG7[31395]: Sessions cached before flush: 0
2014.09.15 12:50:07 LOG7[31395]: Sessions cached after flush: 0
2014.09.15 12:50:07 LOG7[31395]: Service [imaps] closed
2014.09.15 12:50:07 LOG7[31395]: Closing service [ssmtp]
2014.09.15 12:50:07 LOG7[31395]: Service [ssmtp] closed (FD=9)
2014.09.15 12:50:07 LOG7[31395]: Sessions cached before flush: 0
2014.09.15 12:50:07 LOG7[31395]: Sessions cached after flush: 0
2014.09.15 12:50:07 LOG7[31395]: Service [ssmtp] closed
2014.09.15 12:50:07 LOG7[31395]: Closing service [xymonserver]
2014.09.15 12:50:07 LOG7[31395]: Service [xymonserver] closed (FD=10)
2014.09.15 12:50:07 LOG7[31395]: Sessions cached before flush: 0
2014.09.15 12:50:07 LOG7[31395]: Sessions cached after flush: 0
2014.09.15 12:50:07 LOG7[31395]: Service [xymonserver] closed
2014.09.15 12:50:07 LOG7[31395]: removing pid file /stunnel4.pid