What is the difference between the printf function in bash and the echo function?
Specifically, running:
echo "blah" >/dev/udp/localhost/8125
did not send the "blah" command to the server listening on 8125, whereas
printf "blah" >/dev/udp/localhost/8125
sent the data. Does printf send an extra EOF at the end of its output?
I know that when a process crashed, existing TCP socket would be abandoned by sending RST packet(segment) to other peer, and relevant socket fd on other peer would receive the RST packet.
Is there other cases that RST packet sent out?
Such as if a process call close() on a socket fd but with unread data left on that socket, would it also send RST packet(segment) over that socket fd to other peer?
Look:the first I create socket sk:sk=socket(AF_INET, SOCK_RAW, IPPROTO_RAW);and I fill data into Ip Head and Icmp Head,then I sendto the packet,but I don't receiveany datas:lenrecv=recvfrom(sk,buf,100,0,(struct sockaddr*)&addr,&rlen);my codes run at the function recvfrom,but itcouldn't return variable lenrecv,and it look like down,I want to know why?how to receive the data?(I cou
Code:
import socket
import sys
import datetime
import os
try:
username = "root"
password = "Apacheah64"
db_name = "DB_GPS"
table_name = "Tbl_GPS"
host = ""
port = 6903
buf = 4096
except IndexError:
sys.
How do I do ip-address/netmask etc. lookup on OS X (or BSD) using the python standard library function. I'm in the middle of a process and can't make my script working on Mac.
I'm struggling here...
I'm trying to determine if data was successfully sent to the server through a TCP socket using the OutputStream object. For testing on emulator socket communications is loss after 30 sec. For write data OutputStream.write(); its doesn't throw an exception , and local server continuously running its not crashing, only tcp socket connection is loss after some time.
I wrote a very basic python script to port scan my system.
I'm using send on Linux std socket to write a packet over network. Send call, buffers data and "always" return values greater than 0. Send Pass the problem to the operating system and the lower level.
How can i stop the send call and wait for the delivery of the packet to the other endsystem?
Hi All
I am getting an error when using the below code
Receiver
Code:
use IO::Socket;
$sock = new IO::Socket::INET (LocalHost => 'goldengate',
LocalPort => 1200,
Proto => 'tcp',
Listen => 5,
Reuse => 1
);
die "Socket could not be created.
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