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Thanks. That was helpful. It now seems that the problem is really low level, in terms of openssl not being able to talk to the server. Rather, what I get using 'openssl s_client -connect www.theserver.com' suggests that the usual SSL handshaking dies even before the server's certificate is obtained. Here is some of the output it produced:

Loading 'screen' into random state - done CONNECTED(000000F0) write:errno=10054 --- no peer certificate available --- No client certificate CA names sent --- SSL handshake has read 0 bytes and written 321 bytes --- New, (NONE), Cipher is (NONE) Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE ---

And here is the result of the same command when the server is google's home page:

C:\Work>openssl s_client -connect www.google.com:443 Loading 'screen' into random state - done CONNECTED(000000F0) depth=1 C = ZA, O = Thawte Consulting (Pty) Ltd., CN = Thawte SGC CA verify error:num=20:unable to get local issuer certificate verify return:0 --- Certificate chain 0 s:/C=US/ST=California/L=Mountain View/O=Google Inc/CN=www.google.co +m i:/C=ZA/O=Thawte Consulting (Pty) Ltd./CN=Thawte SGC CA 1 s:/C=ZA/O=Thawte Consulting (Pty) Ltd./CN=Thawte SGC CA i:/C=US/O=VeriSign, Inc./OU=Class 3 Public Primary Certification Au +thority --- Server certificate -----BEGIN CERTIFICATE----- MIIDITCCAoqgAwIBAgIQT52W2WawmStUwpV8tBV9TTANBgkqhkiG9w0BAQUFADBM MQswCQYDVQQGEwJaQTElMCMGA1UEChMcVGhhd3RlIENvbnN1bHRpbmcgKFB0eSkg THRkLjEWMBQGA1UEAxMNVGhhd3RlIFNHQyBDQTAeFw0xMTEwMjYwMDAwMDBaFw0x MzA5MzAyMzU5NTlaMGgxCzAJBgNVBAYTAlVTMRMwEQYDVQQIEwpDYWxpZm9ybmlh MRYwFAYDVQQHFA1Nb3VudGFpbiBWaWV3MRMwEQYDVQQKFApHb29nbGUgSW5jMRcw FQYDVQQDFA53d3cuZ29vZ2xlLmNvbTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkC gYEA3rcmQ6aZhc04pxUJuc8PycNVjIjujI0oJyRLKl6g2Bb6YRhLz21ggNM1QDJy wI8S2OVOj7my9tkVXlqGMaO6hqpryNlxjMzNJxMenUJdOPanrO/6YvMYgdQkRn8B d3zGKokUmbuYOR2oGfs5AER9G5RqeC1prcB6LPrQ2iASmNMCAwEAAaOB5zCB5DAM BgNVHRMBAf8EAjAAMDYGA1UdHwQvMC0wK6ApoCeGJWh0dHA6Ly9jcmwudGhhd3Rl LmNvbS9UaGF3dGVTR0NDQS5jcmwwKAYDVR0lBCEwHwYIKwYBBQUHAwEGCCsGAQUF BwMCBglghkgBhvhCBAEwcgYIKwYBBQUHAQEEZjBkMCIGCCsGAQUFBzABhhZodHRw Oi8vb2NzcC50aGF3dGUuY29tMD4GCCsGAQUFBzAChjJodHRwOi8vd3d3LnRoYXd0 ZS5jb20vcmVwb3NpdG9yeS9UaGF3dGVfU0dDX0NBLmNydDANBgkqhkiG9w0BAQUF AAOBgQAhrNWuyjSJWsKrUtKyNGadeqvu5nzVfsJcKLt0AMkQH0IT/GmKHiSgAgDp ulvKGQSy068Bsn5fFNum21K5mvMSf3yinDtvmX3qUA12IxL/92ZzKbeVCq3Yi7Le IOkKcGQRCMha8X2e7GmlpdWC1ycenlbN0nbVeSv3JUMcafC4+Q== -----END CERTIFICATE----- subject=/C=US/ST=California/L=Mountain View/O=Google Inc/CN=www.google +.com issuer=/C=ZA/O=Thawte Consulting (Pty) Ltd./CN=Thawte SGC CA --- No client certificate CA names sent --- SSL handshake has read 2130 bytes and written 443 bytes --- New, TLSv1/SSLv3, Cipher is ECDHE-RSA-RC4-SHA Server public key is 1024 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1.2 Cipher : ECDHE-RSA-RC4-SHA Session-ID: 5930A80165EBF4CDA0199A366CB1232C54B4F70B3CEE0690561A95 +14AB8A27EB Session-ID-ctx: Master-Key: A107E655BBC4DC3E28B81CA9986414F2D56E942590F794822EC435 +D3F907C45C7E93D866DF3D082DBE3573278899648D Key-Arg : None PSK identity: None PSK identity hint: None SRP username: None TLS session ticket lifetime hint: 100800 (seconds) TLS session ticket: 0000 - c5 c4 5c ba a7 ff ca 4c-59 f9 5e 08 80 e6 76 3c ..\....LY +.^...v< 0010 - e8 13 92 e8 96 2d 91 fd-e2 ad ff 33 fe ab 16 6d .....-... +..3...m 0020 - 18 15 77 3d f1 d4 b8 24-fe 19 ac 46 b9 69 52 1a ..w=...$. +..F.iR. 0030 - ac db e2 2c 92 33 6c a8-8e 69 f6 3a 65 6d 29 91 ...,.3l.. +i.:em). 0040 - a3 d3 08 6e a7 da 64 f0-88 c7 d4 e3 b4 29 ba 20 ...n..d.. +....). 0050 - a6 31 52 e5 c0 0b 42 b5-da 9c 6d 43 59 17 1e dd .1R...B.. +.mCY... 0060 - 8a 09 0c ee 03 9b 6a a7-87 23 ef d6 2d 61 23 d0 ......j.. +#..-a#. 0070 - 0c 16 c4 69 8c 42 d4 35-00 ae a1 c7 e6 c9 75 2d ...i.B.5. +.....u- 0080 - e2 f7 be 82 93 c2 2c ba-35 67 89 98 c5 8f 47 cb ......,.5 +g....G. 0090 - b4 75 9f c2 .u.. Start Time: 1354196309 Timeout : 300 (sec) Verify return code: 20 (unable to get local issuer certificate) --- read:errno=0

I don't, yet, understand all of this output, but it appears that the SSL hand shaking dies before there is an attempt to exchange certificates.

Is the presence or absence of support for "Secure Renegotiation" the key to this problem? If not, what is? And is this something I can have my client adapt to by setting one or another 'ssl_opt' value to something useful.? Or do I have to ask the company that is responsible for the server in question for aide?

Thanks again

Ted


In reply to Re^6: need to fix my installation of IO::Socket::SSL, but how? by ted.byers
in thread need to fix my installation of IO::Socket::SSL, but how? by ted.byers

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