Yes you are correct. I'm doing things wrong - it seems to be Chrome and Curl that report "no received data" because it actually does work in Firefox. Well, thanks for taking the time.
2016-04-26 7:05 GMT+02:00 Alex Hultman <alexhult...@gmail.com>: > Yes you are correct. I'm doing things wrong - it seems to be Chrome and > Curl that report "no received data" because it actually does work in > Firefox. Well, thanks for taking the time. > > 2016-04-26 6:55 GMT+02:00 Viktor Dukhovni <openssl-us...@dukhovni.org>: > >> [ This question belongs on openssl-users, not openssl-dev. Please >> reply only to openssl-users. ] >> >> On Tue, Apr 26, 2016 at 05:17:46AM +0200, Alex Hultman wrote: >> >> > SSL_write followed by SSL_shutdown does not actually send the data >> passed >> > to SSL_write if the total data size sent is less than (on my system) 7-8 >> > bytes. >> >> This does not happen in "openssl s_client". You're likely doing >> something wrong. >> >> In one window I start an openssl server: >> >> $ cipher=ADH-DES-CBC3-SHA >> $ seclev= # Make that seclev=":@SECLEVEL=0" with OpenSSL 1.1.0 or >> later >> $ openssl s_server -quiet -cipher "$cipher$seclev" -nocert -accept >> 12345 >> >> I another window I start a client: >> >> $ cipher=ADH-DES-CBC3-SHA >> $ seclev= # Make that seclev=":@SECLEVEL=0" with OpenSSL 1.1.0 or >> later >> echo XXX | openssl s_client -debug -no_ign_eof -cipher >> "$cipher$seclev" -connect localhost:12345 >> >> On the server side I see the expected output: >> >> XXX >> >> On the client side after lots of handshake messages: >> >> >>> ??? [length 0005] >> 17 03 03 00 24 >> write to 0x7f7f8bd003d0 [0x7f7f8c80b203] (41 bytes => 41 (0x29)) >> 0000 - 17 03 03 00 24 c2 19 ea-c6 f1 a8 c7 74 31 50 3d >> ....$.......t1P= >> 0010 - a1 2f fb f0 d5 4d 2e 85-e0 6a 18 86 27 6a 09 1d >> ./...M...j..'j.. >> 0020 - de 98 4e 69 05 57 0f 4c-93 ..Ni.W.L. >> DONE >> >>> ??? [length 0005] >> 15 03 03 00 24 >> write to 0x7f7f8bd003d0 [0x7f7f8c80b203] (41 bytes => 41 (0x29)) >> 0000 - 15 03 03 00 24 d2 94 f8-11 dd 69 81 f7 ab cc 8c >> ....$.....i..... >> 0010 - c4 13 4c 80 24 d7 50 10-b9 62 74 d7 21 86 16 78 >> ..L.$.P..bt.!..x >> 0020 - b4 83 87 da 5e 2f d9 5d-34 ....^/.]4 >> >>> TLS 1.2Alert [length 0002], warning close_notify >> 01 00 >> >> The first of these is the "XXX" encrypted to 16 bytes, and padded >> with a 20-byte SHA1 MAC (the server and client negotiated TLS 1.2 >> with Encrypt-then-Mac). The second is the encrypted shutdown alert. >> >> > Is this known behavior? >> >> No. >> >> -- >> Viktor. >> > >
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