Hi all,
We've been struggling with the segfault issue in 3.20b1 running htdig with
external protocols, and I think we got it fixed...
The issue: htdig segfaults right before exiting when you're using
external_protocols to index via ssl (reported by Mentos Hoffman 3/15/00). It
indexes normally and is searchable, but segfaults at exit with a message like:
Geoff's reply to Mentos indicated that this was a problem with the Transport
class opening a connection and then failing to close it. In fact, what's
happening is that in Document:::Retrieve, url->service() is examined to see
what protocol it's using, and an HtHTTP,HtFile, or ExternalTransport object is
created accordingly. In Document::~Document, the HtHTTP and HtFile objects are
killed off if they exist, but there's no corresponding code to get rid of the
ExternalTransport.
The fix:
We added a line to delete the ExternalTransport object and recompiled, but when
we ran it, it died with a SIGILL complainig about problems with
Retriever::Initial. We then moved the code to delete the URL, Referer, and
Proxy objects below the connection closings, and the program exited normally.
Our modified Document::~Document is below.
This seems to have fixed the issue for us -- at least, it's indexing our ssl
documents without segfaulting!
Atlee Gordy
Document::~Document()
{
// We delete only the derived class objects
if (HTTPConnect)
delete HTTPConnect;
if (FileConnect)
delete FileConnect;
//added these lines to kill the ExternalTransport object
if (externalConnect)
delete externalConnect;
//this stuff needs to be deleted *after* closing the connection objects
if (url)
delete url;
if (proxy)
delete proxy;
if (referer)
delete referer;
#if MEM_DEBUG
char *p = new char;
cout << "==== Document deleted: " << this << " new at " <<
((void *) p) << endl;
delete p;
#endif
}
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