too many msgs (unknown source)


 
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Old 07-16-2005
too many msgs (unknown source)

Hi All,

I have a problem that I don't know its source. I got a client - server application (one client only) over TCP. I use berkley socket architecture (i.e. select). I log every msg ID that each side recv/ send. the problem is that each side accept more msgs that I actually send, so that all the data that I send is recieved by both sides but between the 'correct' msgs each side accept 'empty msgs'. I indexed each msgs IDs starting from 100 and on, and the log file do contain all of them but also empty msgs (ID = 0). the log file looks like that:

100
0
101
0
0
102
0

etc.

do anyone knows what could be the reason? I checked the buffer state over the 'wrong msgs' and noticed all cells in buffer contains only '0'. also found out that on these cases bytesCounter equals MSG_LEN, so it looks like some wiered msg is somehow received.

I also checked the send function and noticed it's never being called with any msg whos ID is less than 100 (so it can't explain the ID '0').

in my encode string function (client and server are multi OS so I encode/ decode string) I put '\0' in the end of array. could that be the reason?

any other ideas?
thanks.
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I3-MSG(1)							     i3 Manual								 I3-MSG(1)

NAME
i3-msg - send messages to i3 window manager SYNOPSIS
i3-msg [-t type] [message] IPC MESSAGE TYPES
command The payload of the message is a command for i3 (like the commands you can bind to keys in the configuration file) and will be executed directly after receiving it. get_workspaces Gets the current workspaces. The reply will be a JSON-encoded list of workspaces. get_outputs Gets the current outputs. The reply will be a JSON-encoded list of outputs (see the reply section). get_tree Gets the layout tree. i3 uses a tree as data structure which includes every container. The reply will be the JSON-encoded tree. get_marks Gets a list of marks (identifiers for containers to easily jump to them later). The reply will be a JSON-encoded list of window marks. get_bar_config Gets the configuration (as JSON map) of the workspace bar with the given ID. If no ID is provided, an array with all configured bar IDs is returned instead. DESCRIPTION
i3-msg is a sample implementation for a client using the unix socket IPC interface to i3. EXAMPLES
# Use 1-px border for current client i3-msg "border 1pixel" # You can leave out the quotes i3-msg border normal # Dump the layout tree i3-msg -t get_tree ENVIRONMENT
I3SOCK If no ipc-socket is specified on the commandline, this variable is used to determine the path, at wich the unix domain socket is expected, on which to connect to i3. SEE ALSO
i3(1) AUTHOR
Michael Stapelberg and contributors i3 4.1.2 01/01/2013 I3-MSG(1)