[Nagiosplug-devel] [ nagiosplug-Bugs-3066166 ] check_http fails to connect to some SSL servers/devices

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Bugs item #3066166, was opened at 2010-09-14 15:27
Message generated for change (Tracker Item Submitted) made by rabinnh
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Category: General plugin execution
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: rabinnh (rabinnh)
Assigned to: Nobody/Anonymous (nobody)
Summary: check_http fails to connect to some SSL servers/devices

Initial Comment:
Error is "CRITICAL - Cannot make SSL connection"

This has repeatedly been reported an closed for different servers; i.e. Tomcat, Oracle AppServer, etc.  I can still see the issue on some access points that I have.

I debugged through the code and the problem and solution are simple;in "ssltuils.c" in the function "int np_net_ssl_init_with_hostname", is the following line of code:

if ((c = SSL_CTX_new (SSLv23_client_method ())) == NULL) {

If this call fails, the error is returned.  However, on systems that fail, falling back to TLS works fine, for example:

if ((c = SSL_CTX_new (TLSv1_client_method ())) == NULL) {

sslutil.c should attempt both methods




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