NodeBIO::Gets was reading off the end of a buffer if it
didn't find a "\n" before the EOF. This behavior
was causing X509 certificates passed to `https.Agent`
via the "ca" option to be silently discarded. It also
was causing improper parsing of certs and keys
passed to https.Agent, but those problems were worked
around in cdde9a3.
Backed out workaround in `lib/crypto.js` from ccde9a3,
which now isn't needed. But keep the test introduced
in that commit, which tests properly for this
bug.
This bug was first introduced in a58f93f
Gist containing test code, bisection log, and notes:
https://gist.github.com/maxtaco/9211605
Otherwise it might get stall (`Peek()` will return zero-length chunk)
in following situation:
1. `Write(kBufferLength)`
2. `Read(kBufferLength)`
3. `Write(anything)`
4. `Peek()` => `len=0`
Remove NodeBIO::GetMethod() and replace calls to BIO_new() with calls
to the new NodeBIO::New() function.
This commit basically reshuffles some code in order to make it explicit
that the NodeBIO BIO_METHOD is const.
When doing `FreeEmpty`, `NodeBIO` skips pre-allocated `head_` buffer.
However this might lead to double-freeing buffers since in `~NodeBIO()`
we're starting deallocation from `head_` buffer.
Might cause write head running over read head, when there were no
allocation and `Commit()` was called. Source of at least one test
failure on windows (`simple/test-https-drain.js`).
Before this commit NodeBIO never shrank, possibly consuming a lot of
memory (depending on reader's haste).
All buffers between write_head's child and read_head should be
deallocated on read, leaving only space left in write_head and in the
next buffer.
We should go to next buffer if *current* one is full, not the next one.
Otherwise we may hop through buffers and written data will become
interleaved, which will lead to failure.
Maxwell Krohn