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Opened 3 weeks ago

Last modified 3 weeks ago

#2427 new defect

xpra not enough values to unpack

Reported by: stdedos Owned by: stdedos
Priority: minor Milestone: 4.0
Component: client Version: 3.0.x
Keywords: Cc:

Description

server:

$ xpra version
xpra for python 2.7 is not installed
 retrying with python3
3.0-r23724
$ lsb_release -rd
Description:	Ubuntu 16.04.6 LTS
Release:	16.04

client:

Windows 10
Xpra GTK3 client version 3.0-r23770 64-bit

Xpra-Python3-x86_64_3.0-r23770\xpra_cmd" start ssh://user@ip/2  --opengl=no --start-new-commands=yes --microphone=off --speaker=off --webcam=no --pulseaudio=no --start=gnome-terminal

I have started a gnome-terminal, and from that I have started this https://community.microfocus.com/t5/Identity-Manager-Tips/Jarek-Gawor-s-excellent-LDAP-Browser-Editor-v2-8-2/ta-p/1771772.

After I connect to an LDAP server, it returns:

2019-09-27 14:06:25,252 Error 'not enough values to unpack (expected 8, got 0)' processing eos packet
Traceback (most recent call last):
  File "E:\Xpra\trunk\src/xpra/client/mixins/window_manager.py", line 1380, in _draw_thread_loop
  File "E:\Xpra\trunk\src/xpra/client/mixins/window_manager.py", line 1394, in _do_draw
ValueError: not enough values to unpack (expected 8, got 0)

I know it's not open-source, but replication is very easy if you can bind to any LDAP.

There are no visual issues that I can see.

Change History (2)

comment:1 Changed 3 weeks ago by Antoine Martin

Owner: changed from Antoine Martin to stdedos

That's fixed in r23997.
'eos' packets trigger whenever we stop sending using a video codec, so it should be easy to trigger with many other applications.

Now, to be able to hit this bug, I believe that you need a very specific combination:

  • python3 client (any platform)
  • a client or server without rencode

How can that be? I'm pretty sure that all win32 builds have rencode builtin.
And python3-rencode should have been pulled in as a dependency of python3-xpra.
So unless you deliberately turned it off on the server command line, it should be available at both ends.
Can you post the output on the server of: python3 ./xpra/net/net_util.py?

comment:2 Changed 3 weeks ago by stdedos

I have it on the server :/

Network interfaces found:
* lo                   (index=1)
 * IPv4:     127.0.0.1
 * IPv6:     ::1
* eth0                 (index=2)
 * IPv4:     172.16.57.121
  {'driver': 'e1000e', 'bus-info': '0000:00:1f.6', 'firmware-version': '0.8-4', 'speed': 1000000000, 'version': '3.2.6-k'}
 * IPv6:     fe80::f745:ce1a:5ee8:6a3e%eth0
  {'driver': 'e1000e', 'bus-info': '0000:00:1f.6', 'firmware-version': '0.8-4', 'speed': 1000000000, 'version': '3.2.6-k'}
* vmnet1               (index=3)
 * IPv4:     172.16.194.1
no ethtool interface speed available for vmnet1[0m
no driver information for vmnet1[0m
 * IPv6:     fe80::250:56ff:fec0:1%vmnet1
no driver information for vmnet1[0m
* vmnet8               (index=4)
 * IPv4:     192.168.155.1
no ethtool interface speed available for vmnet8[0m
no driver information for vmnet8[0m
 * IPv6:     fe80::250:56ff:fec0:8%vmnet8
no driver information for vmnet8[0m
Gateways found:

Protocol Capabilities:
* bencode                         : True
  - version                       : Cython, 3.0
* brotli                          : True
  - version                       : 1.0.4
* compressors                     : zlib, lz4, brotli
* digest                          : xor, hmac, hmac+whirlpool, hmac+sha512, hmac+sha384, hmac+sha256, hmac+sha224, hmac+sha1, hmac+sha, hmac+ripemd160, hmac+md5, hmac+md4, hmac+ecdsa-with-SHA1, hmac+dsaWithSHA, hmac+dsaEncryption, hmac+SHA512, hmac+SHA384, hmac+SHA256, hmac+SHA224, hmac+SHA1, hmac+SHA, hmac+RIPEMD160, hmac+MD5, hmac+MD4, hmac+DSA-SHA, hmac+DSA, des
* encoders                        : rencode, bencode
* lz4                             : True
  - version                       : 0.11.1
* lzo                             : False
* mmap                            : True
* netifaces                       : True
  - version                       : 0.10.4
* python-lz4                      : True
  - version                       : 0.11.1
* rencode                         : True
  - version                       : Cython, 1.0.3
* salt-digest                     : hmac+whirlpool, hmac+sha512, hmac+sha384, hmac+sha256, hmac+sha224, hmac+sha1, hmac+sha, hmac+ripemd160, hmac+md5, hmac+md4, hmac+ecdsa-with-SHA1, hmac+dsaWithSHA, hmac+dsaEncryption, hmac+SHA512, hmac+SHA384, hmac+SHA256, hmac+SHA224, hmac+SHA1, hmac+SHA, hmac+RIPEMD160, hmac+MD5, hmac+MD4, hmac+DSA-SHA, hmac+DSA
* yaml                            : False
* zlib                            : True
  - version                       : 1.0

Network Config:
* socket.timeout                  : 20
* vsocket.timeout                 : 5

Network System Config:
* core
  - busy_poll                     : 0
  - busy_read                     : 0
  - default_qdisc                 : pfifo_fast
  - max_skb_frags                 : 17
  - netdev_max_backlog            : 10000
  - optmem_max                    : 20480
  - rmem_default                  : 212992
  - rmem_max                      : 212992
  - somaxconn                     : 128
  - wmem_default                  : 212992
  - wmem_max                      : 212992
* ipv4
  - fwmark_reflect                : True
  - icmp
    - echo_ignore_all             : True
    - echo_ignore_broadcasts      : True
    - errors_use_inbound_ifaddr   : 0
    - ignore_bogus_error_responses : 1
    - msgs_burst                  : 50
    - msgs_per_sec                : 1000
    - ratelimit                   : 1000
    - ratemask                    : 6168
  - igmp
    - max_memberships             : 20
    - max_msf                     : 10
    - qrv                         : 2
  - ip
    - default_ttl                 : 64
    - dynaddr                     : True
    - early_demux                 : True
    - forward                     : True
    - forward_use_pmtu            : True
    - local_port_range            : 32768, 60999
    - local_reserved_ports        : ()
    - no_pmtu_disc                : 0
    - nonlocal_bind               : True
  - ipfrag
    - high_thresh                 : 262144
    - low_thresh                  : 196608
    - max_dist                    : 64
    - time                        : 30
  - route
    - min_adv_mss                 : 256
    - min_pmtu                    : 552
    - mtu_expires                 : 600
  - tcp
    - abort_on_overflow           : True
    - adv_win_scale               : 1
    - allowed_congestion_control  : reno cubic
    - app_win                     : 31
    - autocorking                 : True
    - available_congestion_control : reno cubic
    - base_mss                    : 1024
    - challenge_ack_limit         : 1000
    - congestion_control          : cubic
    - dsack                       : True
    - early_retrans               : 3
    - ecn                         : 2
    - ecn_fallback                : True
    - fack                        : True
    - fastopen                    : 1
    - fin_timeout                 : 60
    - frto                        : 2
    - invalid_ratelimit           : 500
    - keepalive_intvl             : 75
    - keepalive_probes            : 9
    - keepalive_time              : 7200
    - limit_output_bytes          : 262144
    - low_latency                 : True
    - max_orphans                 : 262144
    - max_reordering              : 300
    - max_syn_backlog             : 2048
    - max_tw_buckets              : 262144
    - mem                         : 767064, 1022754, 1534128
    - min_rtt_wlen                : 300
    - min_tso_segs                : 2
    - moderate_rcvbuf             : 1
    - mtu_probing                 : 0
    - no_metrics_save             : True
    - notsent_lowat               : 4294967295
    - orphan_retries              : 0
    - pacing_ca_ratio             : 120
    - pacing_ss_ratio             : 200
    - probe_interval              : 600
    - probe_threshold             : 8
    - recovery                    : True
    - reordering                  : 3
    - retrans_collapse            : True
    - retries1                    : 3
    - retries2                    : 15
    - rfc1337                     : 0
    - rmem                        : 4096, 87380, 6291456
    - sack                        : 1
    - slow_start_after_idle       : 1
    - stdurg                      : 0
    - syn_retries                 : 6
    - synack_retries              : 5
    - syncookies                  : 1
    - thin_linear_timeouts        : True
    - timestamps                  : True
    - tso_win_divisor             : 3
    - tw_reuse                    : 0
    - window_scaling              : 1
    - wmem                        : 4096, 16384, 4194304
    - workaround_signed_windows   : True
* unix
  - max_dgram_qlen                : 512

SSL:
* alpn                            : True
* channel-binding-types           : tls-unique
* ecdh                            : True
* npn                             : True
* openssl
  - version                       : OpenSSL 1.0.2g  1 Mar 2016
  - version-info                  : (1, 0, 2, 7, 15)
  - version-number                : 268443775
* options
  - OP_ALL                        : 2147484671
  - OP_CIPHER_SERVER_PREFERENCE   : 4194304
  - OP_NO_COMPRESSION             : 131072
  - OP_NO_SSLv2                   : 16777216
  - OP_NO_SSLv3                   : 33554432
  - OP_NO_TLSv1                   : 67108864
  - OP_NO_TLSv1_1                 : 268435456
  - OP_NO_TLSv1_2                 : 134217728
  - OP_SINGLE_DH_USE              : 1048576
  - OP_SINGLE_ECDH_USE            : 524288
* protocols
  - PROTOCOL_SSLv23               : 2
  - PROTOCOL_TLSv1                : 3
  - PROTOCOL_TLSv1_1              : 4
  - PROTOCOL_TLSv1_2              : 5
* sni                             : True
* verify
  - VERIFY_CRL_CHECK_CHAIN        : 12
  - VERIFY_CRL_CHECK_LEAF         : 4
  - VERIFY_DEFAULT                : 0
  - VERIFY_X509_STRICT            : 32
  - VERIFY_X509_TRUSTED_FIRST     : 32768

Crypto Capabilities:
* backend                         : python-cryptography
* padding
  - options                       : PKCS#7, legacy
* python-cryptography             : True
  - version                       : 2.1.3

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