[ros-users] Unknown error initiating TCP/IP socket

Tom Sgouros tomfool at as220.org
Fri Sep 30 19:32:06 UTC 2011

Hello all:

Can anyone tell me what this error implies?

[rospy.internal][WARNING] 2011-09-30 12:02:32,391: Unknown error initiating
TCP/IP socket to tahoma:56716 (http://tahoma:32771/): Traceback (most recent
call last):
line 474, in connect self.read_header()
line 526, in read_header
self.read_buff, self.protocol.buff_size))
  File "/opt/ros/diamondback/ros/core/roslib/src/roslib/network.py", line
350, in read_ros_handshake_header
    d = sock.recv(buff_size)
error: [Errno 104] Connection reset by peer

I get this infrequently, but often enough to be a nuisance, say after ten or
twenty minutes of operation.  The message implies that it's only a warning,
but one of the nodes on which I see it becomes unaccountably silent when it

Thank you,

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