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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 46880] New: SSL+Client Certificates required+large POSTs cause ssl reneg to fail (sometimes)
Date Fri, 20 Mar 2009 01:53:34 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=46880

           Summary: SSL+Client Certificates required+large POSTs cause ssl
                    reneg to fail (sometimes)
           Product: Apache httpd-2
           Version: 2.2.3
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mod_ssl
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: kgrindley@ll.mit.edu


When submitting a POST, usually a large post, sometimes the re-negotiation
fails with the following error.

[Thu Mar 19 21:35:58 2009] [info] Initial (No.1) HTTPS request received for
child 0 (server locus.example.com:443)
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_kernel.c(426): Changed client
verification type will force renegotiation
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_io.c(1478): [client
155.34.228.80] filling buffer
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_io.c(1800): OpenSSL: read 5/5
bytes from BIO#2aca86a7bc20 [mem: 2aca78e95010] (BIO dump follows)
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_io.c(1747):
+-------------------------------------------------------------------------+
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_io.c(1772): | 0000: 17 03 01 04
40                                   ....@            |
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_io.c(1778):
+-------------------------------------------------------------------------+
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_io.c(1800): OpenSSL: read
1088/1088 bytes from BIO#2aca86a7bc20 [mem: 2aca78e95015] (BIO dump follows)
[...snip...]
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_io.c(1529): [client
155.34.228.80] total of 4324 bytes in buffer, eos=1
[Thu Mar 19 21:35:58 2009] [info] Requesting connection re-negotiation
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_kernel.c(616): Performing full
renegotiation: complete handshake protocol
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_kernel.c(1752): OpenSSL:
Handshake: start
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_kernel.c(1760): OpenSSL: Loop:
SSL renegotiate ciphers
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_kernel.c(1760): OpenSSL: Loop:
SSLv3 write hello request A
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_kernel.c(1760): OpenSSL: Loop:
SSLv3 flush data
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_kernel.c(1760): OpenSSL: Loop:
SSLv3 write hello request C
[Thu Mar 19 21:35:58 2009] [info] Awaiting re-negotiation handshake
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_kernel.c(1752): OpenSSL:
Handshake: start
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_kernel.c(1760): OpenSSL: Loop:
before accept initialization
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_io.c(1811): OpenSSL: I/O error, 5
bytes expected to read on BIO#2aca86a7bc20 [mem: 2aca78e95010]
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_kernel.c(1789): OpenSSL: Exit:
error in SSLv3 read client hello B
[Thu Mar 19 21:35:58 2009] [error] Re-negotiation handshake failed: Not
accepted by client!?
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_io.c(1572): [client
155.34.228.80] read from buffered SSL brigade, mode 0, 8192 bytes
[Thu Mar 19 21:35:58 2009] [debug] ssl_engine_io.c(1647): [client
155.34.228.80] buffered SSL brigade exhausted

seems to fail 4 out of 5 times.  sometimes realoading will cause the reneg. to
complete and the post is passed to the CGI.

note I'm running a larger SSL reneg buffer of 800meg. (i need to be able to
accept large posts via client certificate authentication)

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