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https://issues.apache.org/jira/browse/THRIFT-3944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15554170#comment-15554170
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James E. King, III edited comment on THRIFT-3944 at 10/7/16 5:19 AM:
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Patch looks correct. :+1:
was (Author: jking3):
Looks correct. :+1:
> TSSLSocket has dead code in checkHandshake
> ------------------------------------------
>
> Key: THRIFT-3944
> URL: https://issues.apache.org/jira/browse/THRIFT-3944
> Project: Thrift
> Issue Type: Bug
> Components: C++ - Library
> Affects Versions: 0.9.3
> Reporter: Ted Wang
> Assignee: Ted Wang
> Priority: Minor
>
> There is a block of code in checkHandshake that attempts to set read/write
> memory bios to be nonblocking. This code doesn't do anything:
> https://github.com/apache/thrift/blob/master/lib/cpp/src/thrift/transport/TSSLSocket.cpp#L441
> Here's what this code looks like, and the problems:
> - BIO_new(BIO_s_mem()) creates a new memory BIO. Not sure why.
> - BIO_set_nbio() executes BIO_ctrl(..., BIO_C_SET_NBIO, ...). This errors out
> and return 0 because mem_ctrl does not have a case for BIO_C_SET_NBIO. See:
> https://github.com/openssl/openssl/blob/6f0ac0e2f27d9240516edb9a23b7863e7ad02898/crypto/bio/bss_mem.c#L226
> - SSL_set_bio() sets the SSL* to use the memory BIOs.
> - SSL_set_fd() creates a socket BIO, sets the FD on it, and uses
> SSL_set_bio() to replace the memory BIOs.
> As far as I can tell, this block of code does nothing and will not change
> functionality. If there's a reason that it's there, it needs to be
> re-implemented.
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