[Health] Error connection client and server tryton, gnuhealth 2.8.1 ubuntu 14.04.1

[gerson piezal]

i need your help. I install gnuhealth 10 times following the passage of the documentation one by one. when I start the client Tryton shows me the following message.

[Tue Feb 10 13:28:21 2015] INFO:trytond.server:starting JSON-RPC protocol on *:8000
::ffff:127.0.0.1 - - [10/Feb/2015 14:01:48] code 400, message Bad HTTP/0.9 request type ('\x16\x03\x01\x01\x1c\x01\x00\x01\x18\x03\x03\xa0\x9f4\xff\xdf\xeb\xff\xc2\xeeV\xdb$6M\x7fG\xfb\xc0\xfa')
[Tue Feb 10 14:01:51 2015] INFO:database:connect to "template1"

Os ubuntu 14.04.01

GNUHEALTH version 2.8.1

Tryton 3.4.1 (server and client)

installed Packages

    python-pip build-essential python-dev \
    libxml2-dev libxslt1-dev libldap2-dev libsasl2-dev python-ldap \
    libjpeg-dev libfreetype6-dev libtiff4-dev liblcms2-dev libwebp-dev \
    zlib1g-dev python-imaging python2.7-cracklib postgresql postgresql-server-dev-all

Trytond.conf

[database]
uri = postgresql://gnuhealth:address@hidden:5432
path = /home/gnuhealth/attach

[jsonrpc]
listen=*:8000

[session]
super_pwd = jE.HdFQ9Dn05k