01-29-2013
Want to unblock port for particular site
Dear All
We have one Centos Server on Asterisk platform.We are trying to open one particular site from client machines which is our client portal.We have to upload data on that.When we trying to open that site somewhere its blocking and not opening.We did tracert and found one router down outside india.Did emailed to our ISP and they said its our server issue.I Tried to open that site with Data card and its working fine.Please let me know how can i check which port is blocking.
Thank You
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LEARN ABOUT SUSE
fblocked
fblocked(n) Tcl Built-In Commands fblocked(n)
__________________________________________________________________________________________________________________________________________________
NAME
fblocked - Test whether the last input operation exhausted all available input
SYNOPSIS
fblocked channelId
_________________________________________________________________
DESCRIPTION
The fblocked command returns 1 if the most recent input operation on channelId returned less information than requested because all avail-
able input was exhausted. For example, if gets is invoked when there are only three characters available for input and no end-of-line
sequence, gets returns an empty string and a subsequent call to fblocked will return 1.
ChannelId must be an identifier for an open channel such as a Tcl standard channel (stdin, stdout, or stderr), the return value from an
invocation of open or socket, or the result of a channel creation command provided by a Tcl extension.
EXAMPLE
The fblocked command is particularly useful when writing network servers, as it allows you to write your code in a line-by-line style with-
out preventing the servicing of other connections. This can be seen in this simple echo-service:
# This is called whenever a new client connects to the server
proc connect {chan host port} {
set clientName [format <%s:%d> $host $port]
puts "connection from $clientName"
fconfigure $chan -blocking 0 -buffering line
fileevent $chan readable [list echoLine $chan $clientName]
}
# This is called whenever either at least one byte of input
# data is available, or the channel was closed by the client.
proc echoLine {chan clientName} {
gets $chan line
if {[eof $chan]} {
puts "finishing connection from $clientName"
close $chan
} elseif {![fblocked $chan]} {
# Didn't block waiting for end-of-line
puts "$clientName - $line"
puts $chan $line
}
}
# Create the server socket and enter the event-loop to wait
# for incoming connections...
socket -server connect 12345
vwait forever
SEE ALSO
gets(n), open(n), read(n), socket(n), Tcl_StandardChannels(3)
KEYWORDS
blocking, nonblocking
Tcl 7.5 fblocked(n)