OpenVPN Support Forum

Posted: **Wed Mar 18, 2015 3:19 am**

Hello, All

As title openvpn connect try to reconnect to the server,
After got "Session Invalidated:BUFFER_ERROR" even there is a connection.

as below OPENVPN CONNECT throw these errors will connect again,

Code: Select all

2015-03-18 11:47:16 Session invalidated: BUFFER_ERROR
2015-03-18 11:47:16 Client terminated, restarting in 2...
2015-03-18 11:47:16 TUN reassert
2015-03-18 11:47:16 TUN reset routes

even add

Code: Select all

keepalive 60 3600

does not work.

but Android Version no problem, working fine.

Any idea?

log

Code: Select all


2015-03-18 11:46:42 SSL Handshake: TLSv1.0/TLS-DHE-RSA-WITH-AES-256-CBC-SHA
2015-03-18 11:46:42 Session is ACTIVE
2015-03-18 11:46:42 EVENT: GET_CONFIG
2015-03-18 11:46:42 Sending PUSH_REQUEST to server...
2015-03-18 11:46:43 Sending PUSH_REQUEST to server...
2015-03-18 11:46:45 Sending PUSH_REQUEST to server...
2015-03-18 11:46:48 Sending PUSH_REQUEST to server...
2015-03-18 11:46:48 OPTIONS:
0 [route-gateway] [192.168.60.1] 
1 [topology] [subnet] 
2 [ping] [10] 
3 [ping-restart] [120] 
4 [socket-flags] [TCP_NODELAY] 
5 [redirect-gateway] [def1] [bypass-dhcp] 
6 [ifconfig] [192.168.60.15] [255.255.255.0] 

2015-03-18 11:46:48 LZO-ASYM init swap=0 asym=0
2015-03-18 11:46:48 EVENT: ASSIGN_IP
2015-03-18 11:46:48 Google DNS fallback enabled
2015-03-18 11:46:48 Connected via tun
2015-03-18 11:46:48 EVENT: CONNECTED stanley@10.41.3.31:4886 (10.41.3.31) via /TCPv4 on tun/192.168.60.15/
2015-03-18 11:46:48 NET Internet:ReachableViaWiFi/-R t----l-
2015-03-18 11:46:48 SetStatus Connected
2015-03-18 11:47:01 Session invalidated: BUFFER_ERROR
2015-03-18 11:47:01 Client terminated, restarting in 2...
2015-03-18 11:47:01 TUN reassert
2015-03-18 11:47:01 TUN reset routes
2015-03-18 11:47:01 NET Internet:ReachableViaWiFi/-R -----l-
2015-03-18 11:47:03 EVENT: RECONNECTING
2015-03-18 11:47:03 LZO-ASYM init swap=0 asym=0
2015-03-18 11:47:03 Contacting 10.41.3.31:4886 via TCP
2015-03-18 11:47:03 EVENT: WAIT
2015-03-18 11:47:03 SetTunnelSocket returned 1
2015-03-18 11:47:03 Connecting to 10.41.3.31:4886 (10.41.3.31) via TCPv4
2015-03-18 11:47:03 EVENT: CONNECTING
2015-03-18 11:47:03 Tunnel Options:V4,dev-type tun,link-mtu 1560,tun-mtu 1500,proto TCPv4_CLIENT,comp-lzo,cipher AES-128-CBC,auth SHA1,keysize 128,key-method 2,tls-client
2015-03-18 11:47:03 Creds: Username/Password
2015-03-18 11:47:03 Peer Info:
IV_GUI_VER=net.openvpn.connect.ios 1.0.5-177
IV_VER=3.0
IV_PLAT=ios
IV_NCP=1
IV_LZO=1

2015-03-18 11:47:03 VERIFY OK: depth=1
cert. version : 3
serial number : F9:6F:22:F4:25:A9:C7:44
issuer name : C=KR, ST=Seoul, L=Guro, O=Future Systems, OU=RND, CN=sslplus-ca
subject name : C=KR, ST=Seoul, L=Guro, O=Future Systems, OU=RND, CN=sslplus-ca
issued on : 2012-02-18 16:59:23
expires on : 2022-02-15 16:59:23
signed using : RSA with SHA1
RSA key size : 2048 bits
basic constraints : CA=true

2015-03-18 11:47:03 VERIFY OK: depth=0
cert. version : 3
serial number : 01
issuer name : C=KR, ST=Seoul, L=Guro, O=Future Systems, OU=RND, CN=sslplus-ca
subject name : C=KR, ST=Seoul, O=Future Systems, OU=RND, CN=marlin
issued on : 2012-02-18 17:05:38
expires on : 2022-02-15 17:05:38
signed using : RSA with SHA1
RSA key size : 2048 bits
basic constraints : CA=false

2015-03-18 11:47:03 SSL Handshake: TLSv1.0/TLS-DHE-RSA-WITH-AES-256-CBC-SHA
2015-03-18 11:47:03 Session is ACTIVE
2015-03-18 11:47:03 EVENT: GET_CONFIG
2015-03-18 11:47:03 Sending PUSH_REQUEST to server...
2015-03-18 11:47:04 Sending PUSH_REQUEST to server...
2015-03-18 11:47:06 Sending PUSH_REQUEST to server...
2015-03-18 11:47:06 OPTIONS:
0 [route-gateway] [192.168.60.1] 
1 [topology] [subnet] 
2 [ping] [10] 
3 [ping-restart] [120] 
4 [socket-flags] [TCP_NODELAY] 
5 [redirect-gateway] [def1] [bypass-dhcp] 
6 [ifconfig] [192.168.60.15] [255.255.255.0] 

2015-03-18 11:47:06 LZO-ASYM init swap=0 asym=0
2015-03-18 11:47:06 EVENT: ASSIGN_IP
2015-03-18 11:47:06 Google DNS fallback enabled
2015-03-18 11:47:06 Connected via tun
2015-03-18 11:47:06 EVENT: CONNECTED song@10.41.3.31:4886 (10.41.3.31) via /TCPv4 on tun/192.168.60.15/
2015-03-18 11:47:06 NET Internet:ReachableViaWiFi/-R t----l-
2015-03-18 11:47:06 SetStatus Connected <--- connected !!!!


2015-03-18 11:47:16 Session invalidated: BUFFER_ERROR
2015-03-18 11:47:16 Client terminated, restarting in 2...
2015-03-18 11:47:16 TUN reassert
2015-03-18 11:47:16 TUN reset routes
2015-03-18 11:47:16 NET Internet:ReachableViaWiFi/-R -----l-
2015-03-18 11:47:18 EVENT: RECONNECTING <------------------ start reconnect !!!

2015-03-18 11:47:18 LZO-ASYM init swap=0 asym=0
2015-03-18 11:47:18 Contacting 10.41.3.31:4886 via TCP
2015-03-18 11:47:18 EVENT: WAIT
2015-03-18 11:47:18 SetTunnelSocket returned 1
2015-03-18 11:47:18 Connecting to 10.41.3.31:4886 (10.41.3.31) via TCPv4
2015-03-18 11:47:18 EVENT: CONNECTING
2015-03-18 11:47:18 Tunnel Options:V4,dev-type tun,link-mtu 1560,tun-mtu 1500,proto TCPv4_CLIENT,comp-lzo,cipher AES-128-CBC,auth SHA1,keysize 128,key-method 2,tls-client
2015-03-18 11:47:18 Creds: Username/Password
2015-03-18 11:47:18 Peer Info:
IV_GUI_VER=net.openvpn.connect.ios 1.0.5-177
IV_VER=3.0
IV_PLAT=ios
IV_NCP=1
IV_LZO=1

2015-03-18 11:47:18 VERIFY OK: depth=1
cert. version : 3
serial number : F9:6F:22:F4:25:A9:C7:44
issuer name : C=KR, ST=Seoul, L=Guro, O=Future Systems, OU=RND, CN=sslplus-ca
subject name : C=KR, ST=Seoul, L=Guro, O=Future Systems, OU=RND, CN=sslplus-ca
issued on : 2012-02-18 16:59:23
expires on : 2022-02-15 16:59:23
signed using : RSA with SHA1
RSA key size : 2048 bits
basic constraints : CA=true

and client.conf

Code: Select all

client
dev tun
proto tcp
remote [server-ip][port]

comp-lzo

no-iv
no-replay

nobind
persist-key
persist-tun
auth-user-pass
verb 3
cipher AES-128-CBC

<ca>
-----BEGIN CERTIFICATE-----
-----END CERTIFICATE-----
</ca>

<cert>
-----BEGIN CERTIFICATE-----
-----END CERTIFICATE-----
</cert>

<key>
-----BEGIN RSA PRIVATE KEY-----
-----END RSA PRIVATE KEY-----
</key>

Posted: **Wed Mar 18, 2015 2:17 pm**

Can you post server config and log ?

Also, what version of Openvpn Connect you use ?

Posted: **Wed Mar 18, 2015 10:41 pm**

Yesterday I finally found the problem. problem is very simple, I used no-iv and no-replay options, but OVPN CON (1.0.5)does not support these option yet. I hope support these options and other many unsupported options comes next version as soon as it possible.
Or is there way to join the OVPN DEV TEAM. It is a joke. ^^
Any way I very thank you and your great work.

Best Regards Stanley.

Posted: **Wed Mar 18, 2015 11:00 pm**

I think it gonna be self-answer. But I wanna share some importENT (maybe unimportant) informations.
The problem is very simple OVPN CON(1.0.5- newest)does not support some options yet.

In my case I used no-iv and no-replay. of course these options are unsupported.

So caused the error.

I hope OVPN DEV TEAM add unsupported options to next version(1.0.6 maybe) as soon as it possible.

Or is there way to join the DEV TEAM.
It is a joke.
Anyway I very thank you and your great job.

Best Regards Stanley.

Posted: **Mon Oct 05, 2015 12:58 am**

stanleysong wrote:Hello, All

As title openvpn connect try to reconnect to the server,
After got "Session Invalidated:BUFFER_ERROR" even there is a connection.

as below OPENVPN CONNECT throw these errors will connect again,

Code: Select all

2015-03-18 11:47:16 Session invalidated: BUFFER_ERROR
2015-03-18 11:47:16 Client terminated, restarting in 2...
2015-03-18 11:47:16 TUN reassert
2015-03-18 11:47:16 TUN reset routes

even add

Code: Select all

keepalive 60 3600

does not work.

but Android Version no problem, working fine.

Any idea?

log

Code: Select all


2015-03-18 11:46:42 SSL Handshake: TLSv1.0/TLS-DHE-RSA-WITH-AES-256-CBC-SHA
2015-03-18 11:46:42 Session is ACTIVE
2015-03-18 11:46:42 EVENT: GET_CONFIG
2015-03-18 11:46:42 Sending PUSH_REQUEST to server...
2015-03-18 11:46:43 Sending PUSH_REQUEST to server...
2015-03-18 11:46:45 Sending PUSH_REQUEST to server...
2015-03-18 11:46:48 Sending PUSH_REQUEST to server...
2015-03-18 11:46:48 OPTIONS:
0 [route-gateway] [192.168.60.1] 
1 [topology] [subnet] 
2 [ping] [10] 
3 [ping-restart] [120] 
4 [socket-flags] [TCP_NODELAY] 
5 [redirect-gateway] [def1] [bypass-dhcp] 
6 [ifconfig] [192.168.60.15] [255.255.255.0] 

2015-03-18 11:46:48 LZO-ASYM init swap=0 asym=0
2015-03-18 11:46:48 EVENT: ASSIGN_IP
2015-03-18 11:46:48 Google DNS fallback enabled
2015-03-18 11:46:48 Connected via tun
2015-03-18 11:46:48 EVENT: CONNECTED stanley@10.41.3.31:4886 (10.41.3.31) via /TCPv4 on tun/192.168.60.15/
2015-03-18 11:46:48 NET Internet:ReachableViaWiFi/-R t----l-
2015-03-18 11:46:48 SetStatus Connected
2015-03-18 11:47:01 Session invalidated: BUFFER_ERROR
2015-03-18 11:47:01 Client terminated, restarting in 2...
2015-03-18 11:47:01 TUN reassert
2015-03-18 11:47:01 TUN reset routes
2015-03-18 11:47:01 NET Internet:ReachableViaWiFi/-R -----l-
2015-03-18 11:47:03 EVENT: RECONNECTING
2015-03-18 11:47:03 LZO-ASYM init swap=0 asym=0
2015-03-18 11:47:03 Contacting 10.41.3.31:4886 via TCP
2015-03-18 11:47:03 EVENT: WAIT
2015-03-18 11:47:03 SetTunnelSocket returned 1
2015-03-18 11:47:03 Connecting to 10.41.3.31:4886 (10.41.3.31) via TCPv4
2015-03-18 11:47:03 EVENT: CONNECTING
2015-03-18 11:47:03 Tunnel Options:V4,dev-type tun,link-mtu 1560,tun-mtu 1500,proto TCPv4_CLIENT,comp-lzo,cipher AES-128-CBC,auth SHA1,keysize 128,key-method 2,tls-client
2015-03-18 11:47:03 Creds: Username/Password
2015-03-18 11:47:03 Peer Info:
IV_GUI_VER=net.openvpn.connect.ios 1.0.5-177
IV_VER=3.0
IV_PLAT=ios
IV_NCP=1
IV_LZO=1

2015-03-18 11:47:03 VERIFY OK: depth=1
cert. version : 3
serial number : F9:6F:22:F4:25:A9:C7:44
issuer name : C=, ST=, L=, O=, OU=RND, CN=-ca
subject name : C=, ST=, L=, O=, OU=RND, CN=-ca
issued on : 2012-02-18 16:59:23
expires on : 2022-02-15 16:59:23
signed using : RSA with SHA1
RSA key size : 2048 bits
basic constraints : CA=true

2015-03-18 11:47:03 VERIFY OK: depth=0
cert. version : 3
serial number : 01
issuer name : C=, ST=, L=, O=, OU=, CN=-ca
subject name : C=, ST=, O=, OU=, CN=
issued on : 2012-02-18 17:05:38
expires on : 2022-02-15 17:05:38
signed using : RSA with SHA1
RSA key size : 2048 bits
basic constraints : CA=false

2015-03-18 11:47:03 SSL Handshake: TLSv1.0/TLS-DHE-RSA-WITH-AES-256-CBC-SHA
2015-03-18 11:47:03 Session is ACTIVE
2015-03-18 11:47:03 EVENT: GET_CONFIG
2015-03-18 11:47:03 Sending PUSH_REQUEST to server...
2015-03-18 11:47:04 Sending PUSH_REQUEST to server...
2015-03-18 11:47:06 Sending PUSH_REQUEST to server...
2015-03-18 11:47:06 OPTIONS:
0 [route-gateway] [192.168.60.1] 
1 [topology] [subnet] 
2 [ping] [10] 
3 [ping-restart] [120] 
4 [socket-flags] [TCP_NODELAY] 
5 [redirect-gateway] [def1] [bypass-dhcp] 
6 [ifconfig] [192.168.60.15] [255.255.255.0] 

2015-03-18 11:47:06 LZO-ASYM init swap=0 asym=0
2015-03-18 11:47:06 EVENT: ASSIGN_IP
2015-03-18 11:47:06 Google DNS fallback enabled
2015-03-18 11:47:06 Connected via tun
2015-03-18 11:47:06 EVENT: CONNECTED song@10.41.3.31:4886 (10.41.3.31) via /TCPv4 on tun/192.168.60.15/
2015-03-18 11:47:06 NET Internet:ReachableViaWiFi/-R t----l-
2015-03-18 11:47:06 SetStatus Connected <--- connected !!!!


2015-03-18 11:47:16 Session invalidated: BUFFER_ERROR
2015-03-18 11:47:16 Client terminated, restarting in 2...
2015-03-18 11:47:16 TUN reassert
2015-03-18 11:47:16 TUN reset routes
2015-03-18 11:47:16 NET Internet:ReachableViaWiFi/-R -----l-
2015-03-18 11:47:18 EVENT: RECONNECTING <------------------ start reconnect !!!

2015-03-18 11:47:18 LZO-ASYM init swap=0 asym=0
2015-03-18 11:47:18 Contacting 10.41.3.31:4886 via TCP
2015-03-18 11:47:18 EVENT: WAIT
2015-03-18 11:47:18 SetTunnelSocket returned 1
2015-03-18 11:47:18 Connecting to 10.41.3.31:4886 (10.41.3.31) via TCPv4
2015-03-18 11:47:18 EVENT: CONNECTING
2015-03-18 11:47:18 Tunnel Options:V4,dev-type tun,link-mtu 1560,tun-mtu 1500,proto TCPv4_CLIENT,comp-lzo,cipher AES-128-CBC,auth SHA1,keysize 128,key-method 2,tls-client
2015-03-18 11:47:18 Creds: Username/Password
2015-03-18 11:47:18 Peer Info:
IV_GUI_VER=net.openvpn.connect.ios 1.0.5-177
IV_VER=3.0
IV_PLAT=ios
IV_NCP=1
IV_LZO=1

2015-03-18 11:47:18 VERIFY OK: depth=1
cert. version : 3
serial number : F9:6F:22:F4:25:A9:C7:44
issuer name : C=, ST=, L=, O=, OU=, CN=-ca
subject name : C=, ST=, L=, O=, OU=, CN=-ca
issued on : 2012-02-18 16:59:23
expires on : 2022-02-15 16:59:23
signed using : RSA with SHA1
RSA key size : 2048 bits
basic constraints : CA=true

and client.conf

Code: Select all

client
dev tun
proto tcp
remote [server-ip][port]

comp-lzo

no-iv
no-replay

nobind
persist-key
persist-tun
auth-user-pass
verb 3
cipher AES-128-CBC

<ca>
-----BEGIN CERTIFICATE-----
-----END CERTIFICATE-----
</ca>

<cert>
-----BEGIN CERTIFICATE-----
-----END CERTIFICATE-----
</cert>

<key>
-----BEGIN RSA PRIVATE KEY-----
-----END RSA PRIVATE KEY-----
</key>

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