I want to use curl to get the session id. So, please help me if there is any way to get the session id using Curl. Earlier I was using Open SSL to capture the session id. Now, I don't want to use it. I tried to send this command:  curl_7_35_0 -v -k -tls1.2 --sessionid 'not_sure_what_to_use_here' https://30.1.1.101/ssl_ecdhe.txtAm I missing something here? If yes, please do let me know.Output if I use OpenSSLCli31(runs)#/usr/local/ssl/bin/openssl s_client -connect 30.1.1.101:443 -tls1_2 -servername 20.1.1.1 -reconnect -crlfCONNECTED(00000003)depth=0 C = US, ST = California, L = San Jose, O = A10Networks Inc., OU = QA, CN = www.automationserver.com, emailAddress = info@a10networks.comverify error:num=18:self signed certificateverify return:1depth=0 C = US, ST = California, L = San Jose, O = A10Networks Inc., OU = QA, CN = www.automationserver.com, emailAddress = info@a10networks.comverify return:1---Certificate chain 0 s:/C=US/ST=California/L=San Jose/O=A10Networks Inc./OU=QA/CN=www.automationserver.com/emailAddress=info@a10networks.com   i:/C=US/ST=California/L=San Jose/O=A10Networks Inc./OU=QA/CN=www.automationserver.com/emailAddress=info@a10networks.com---Server certificate-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----subject=/C=US/ST=California/L=San Jose/O=A10Networks Inc./OU=QA/CN=www.automationserver.com/emailAddress=info@a10networks.comissuer=/C=US/ST=California/L=San Jose/O=A10Networks Inc./OU=QA/CN=www.automationserver.com/emailAddress=info@a10networks.com---No client certificate CA names sentPeer signing digest: SHA256Server Temp Key: ECDH, P-256, 256 bits---SSL handshake has read 1010 bytes and written 475 bytes---New, TLSv1/SSLv3, Cipher is ECDHE-ECDSA-AES128-SHAServer public key is 256 bitSecure Renegotiation IS supportedCompression: NONEExpansion: NONENo ALPN negotiatedSSL-Session:    Protocol  : TLSv1.2    Cipher    : ECDHE-ECDSA-AES128-SHA    Session-ID: 0AABABCBB2C24ABD3D5BD4B84A1914EC563E3D518108A89487A6B056BB879CC4    Session-ID-ctx:     Master-Key: BCD8B034C67DB603132FB69295FEB996628502A08BE9E58BAF03D365A8FFCC03E117A4D836BB782AAA2D65424686BB2A    Key-Arg   : None    PSK identity: None    PSK identity hint: None    SRP username: None    Start Time: 1503310272    Timeout   : 7200 (sec)    Verify return code: 18 (self signed certificate)---drop connection and then reconnectCONNECTED(00000003)---Reused, TLSv1/SSLv3, Cipher is ECDHE-ECDSA-AES128-SHASecure Renegotiation IS supportedCompression: NONEExpansion: NONENo ALPN negotiatedSSL-Session:    Protocol  : TLSv1.2    Cipher    : ECDHE-ECDSA-AES128-SHA    Session-ID: 0AABABCBB2C24ABD3D5BD4B84A1914EC563E3D518108A89487A6B056BB879CC4    Session-ID-ctx:     Master-Key: BCD8B034C67DB603132FB69295FEB996628502A08BE9E58BAF03D365A8FFCC03E117A4D836BB782AAA2D65424686BB2A    Key-Arg   : None    PSK identity: None    PSK identity hint: None    SRP username: None    Start Time: 1503310272    Timeout   : 7200 (sec)    Verify return code: 18 (self signed certificate)---drop connection and then reconnectCONNECTED(00000003)---Reused, TLSv1/SSLv3, Cipher is ECDHE-ECDSA-AES128-SHASecure Renegotiation IS supportedCompression: NONEExpansion: NONENo ALPN negotiatedSSL-Session:    Protocol  : TLSv1.2    Cipher    : ECDHE-ECDSA-AES128-SHA    Session-ID: 0AABABCBB2C24ABD3D5BD4B84A1914EC563E3D518108A89487A6B056BB879CC4    Session-ID-ctx:     Master-Key: BCD8B034C67DB603132FB69295FEB996628502A08BE9E58BAF03D365A8FFCC03E117A4D836BB782AAA2D65424686BB2A    Key-Arg   : None    PSK identity: None    PSK identity hint: None    SRP username: None    Start Time: 1503310272    Timeout   : 7200 (sec)    Verify return code: 18 (self signed certificate)---drop connection and then reconnectCONNECTED(00000003)---Reused, TLSv1/SSLv3, Cipher is ECDHE-ECDSA-AES128-SHASecure Renegotiation IS supportedCompression: NONEExpansion: NONENo ALPN negotiatedSSL-Session:    Protocol  : TLSv1.2    Cipher    : ECDHE-ECDSA-AES128-SHA    Session-ID: 0AABABCBB2C24ABD3D5BD4B84A1914EC563E3D518108A89487A6B056BB879CC4    Session-ID-ctx:     Master-Key: BCD8B034C67DB603132FB69295FEB996628502A08BE9E58BAF03D365A8FFCC03E117A4D836BB782AAA2D65424686BB2A    Key-Arg   : None    PSK identity: None    PSK identity hint: None    SRP username: None    Start Time: 1503310272    Timeout   : 7200 (sec)    Verify return code: 18 (self signed certificate)---drop connection and then reconnectCONNECTED(00000003)---Reused, TLSv1/SSLv3, Cipher is ECDHE-ECDSA-AES128-SHASecure Renegotiation IS supportedCompression: NONEExpansion: NONENo ALPN negotiatedSSL-Session:    Protocol  : TLSv1.2    Cipher    : ECDHE-ECDSA-AES128-SHA    Session-ID: 0AABABCBB2C24ABD3D5BD4B84A1914EC563E3D518108A89487A6B056BB879CC4    Session-ID-ctx:     Master-Key: BCD8B034C67DB603132FB69295FEB996628502A08BE9E58BAF03D365A8FFCC03E117A4D836BB782AAA2D65424686BB2A    Key-Arg   : None    PSK identity: None    PSK identity hint: None    SRP username: None    Start Time: 1503310272    Timeout   : 7200 (sec)    Verify return code: 18 (self signed certificate)---drop connection and then reconnectCONNECTED(00000003)---Reused, TLSv1/SSLv3, Cipher is ECDHE-ECDSA-AES128-SHASecure Renegotiation IS supportedCompression: NONEExpansion: NONENo ALPN negotiatedSSL-Session:    Protocol  : TLSv1.2    Cipher    : ECDHE-ECDSA-AES128-SHA    Session-ID: 0AABABCBB2C24ABD3D5BD4B84A1914EC563E3D518108A89487A6B056BB879CC4    Session-ID-ctx:     Master-Key: BCD8B034C67DB603132FB69295FEB996628502A08BE9E58BAF03D365A8FFCC03E117A4D836BB782AAA2D65424686BB2A    Key-Arg   : None    PSK identity: None    PSK identity hint: None    SRP username: None    Start Time: 1503310272    Timeout   : 7200 (sec)    Verify return code: 18 (self signed certificate)---GET /ssl_ecdhe.txt HTTP/1.0read:errno=104
Session id using curl_7_35
curl;ssl