I am using centos 5, want to send a sets of binary data to other bluetooth device I know how to sent a file but dont know how to sent raw data. My case is like this I have a bluetooth device I need to send data to then after it process I need to get it back, I plan to do this all using terminal is that possible?
View 2 RepliesI am coding a http server which has to send the file(s) such as images, .avi files, .mpeg, that the client is going to request. I have been trying of sending files through sockets.
char info [256];
bzero(info, 256);
//memset(&info,0,sizeof(info));
read(socket, info, 255);
write(socket, HTTP, 255);
FILE *fl= fopen(info,"rb");
fseek(fl, 0, SEEK_END);
long len = ftell(fl);
printf("largo: %ld", len);
unsigned char *ret = (char*) malloc(len);
fseek(fl, 0, SEEK_SET);
fread(ret, 1, len, fl);
However, it's supposed to be shown in Mozilla Firefox (as the client). But it is not doing it, so.. It's just not getting the complete file.
I am trying to redirect connection to port 8980 to execute a telnet command to a local machine
by issuing the following command :
In Server 1 :
socat TCP-LISTEN:8980,fork EXEC:/myscript,reuseaddr
My script contains
#!/bin/bash
telnet 192.168.20.12 //local Server 2
I am sending Binary data from the client to Server 2 via Server 1. So it happens that I have some characters in Hex translated to special characters in ASCII like open brackets or Commas etc.. and that closed the socket between the two machines.
I want to send raw data to a usart port of my board connected to linux box. i know the command
echo "abcxyz" > /dev/<usb_dev_file_name>
would write the raw bits for characters abcxyz to the usb device but the problem is how do i know which device file to write to?there are so many in my /dev.
I have created a file using open() and written data to it. Data appears as normal characters in the file. How to save these characters in a binary format in that file using C language? Here I mean that the characters should be actually stored as 0 and 1. Do I have to convert the whole data using some function or there is some standard way to do it in Linux?
View 14 Replies View RelatedWhat would be the best way to extract data by sending queries to a website?
View 2 Replies View RelatedIs there any Linux utility to combine two or more binary files into a single binary file ?
View 7 Replies View RelatedHow to coded version info and other information likes author and company name into the ELF binary?
I prefer the put the version info during build step.
I need an application for sending files via Bluetooth to some receivers.
View 1 Replies View RelatedI was wandering if it is possible to somehow send sound from Amarok14 to cell phone via bluetooth, so I could hear the sound on phone speakers/headphones? If it is possible, how can I do that?
View 1 Replies View RelatedI manually rotated my catalina.out file, and now the file jumps to 30+Mb and when I try to view it, less tells me it might be a binary file. It sure appears to have binary data in it, about 30meg of it.
I did the rotate via a copy:
copy catalina.out to another file
cat /dev/null > catalina.out
I have tried using echo:
echo "" > catalina.out
...also with the same result.
This application isn't something I can just bounce when necessary. It kind of appears that the original file is still there - sort of. But is it not readable text anymore.
SunOS 5.10
tomcat 5.5.26 (version required by app vendor)
Is there such an application that can handle opening a 30GB binary file containing hex data? GHex won't open it.
View 11 Replies View Relatedi would like to add 8 bytes of data to the begigning of a binary file.is there a command for this?
View 2 Replies View RelatedI have a question regarding Bluetooth with Bluedevil. Finally I got a connection working in one direction: sending files from my mobile (Google Nexus One with Android 2.3.3) to the computer. But I can not send files from my computer to the phone. I also tried to send files from my desktop to my Laptop and it fails. I also tried it the other way around: from Laptop to Desktop... fail.
What is it? Is it still a bug in Bluedevil and all I can do is wait? Or is there some package missing? The following packages (regarding bluetooth) are installed:
bluedevil
bluez
libbluetooth 3
pulseaudio-module-bluetooth
I don't believe that it is hardware related, because it works one-way... If I should post logfiles or whatever.
shed some light on what I am doing. I am wondering if I just havehings back to front.Server (MESH):Fedora 13Firewall ports open tcp 22(ssh), tcp 873(rsync)sshd service started
View 5 Replies View RelatedI would like to send a data using one thread and receive a data using other thread by using a same socket connection using USD sockets. The calls i am using for sending and receiving are send(), recv(). let me know is it possible to send and receive the data parallel (Full duplex communication)?
View 2 Replies View RelatedI'm working on testing some software, and I have a question. We have several files of binary data that we need to push through our application to test. It communicates via simple TCP sockets. Is there a way I can send this data to the socket from the command line? I tried doing something like this, but telnet never picked up the data.
View 5 Replies View RelatedI have slackware 13.0 installed in my system. how to find soundcard used by alsa for sending the data.
View 1 Replies View Relatedcannot find what should I do, which conf should I edit to make it work. I cant send email from command line.
Is it necesary to have mail server setup? Hope not, just want simple txt mail sent. I tried MUTT and MAIL.
I have a desklet that, occasionally after toying with network stuff, will tell me that large amounts of data are being sent/received. What's a good way to determine what processes are occupying these resources?!
View 14 Replies View RelatedI am writing a code in Python where a socket client changes data with the server. That works nice if the connection is up. However it is also supposed to work offline. So I need to be able to detect if the connection is up before sending data, but I was not able to do so. A summary of the code is like that:
Code:
try:
socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
socket.connect( (self.host, self.port) )
connected = True
except:
connected = False
if connected:
data = "some data byte"
try:
socket.send(data)
except:
connected=False
socket.close()
If I unplug the cable after the connection is ready then the socket sends data and does not detect the connection failure. What is amazing is that the client detects the connection failure just after the cable has been plugged again. Of course there is a loop in the code above and always that connected==False a new connection is made. How could the program detect the connection failure before sending data and then lead the code to an exception?
Since today morning we are getting this error, could not track down the cause
We are running :
Postfix
Amavist and Clam
70A6C45A1CE: to=<actualemailid@yahoo.com>, relay=none, delay=0, status=deferred (delivery temporarily suspended: lost connection with 127.0.0.1[127.0.0.1] while sending end of data -- message may be sent more than once).
I want to be able to take data in from a web form and fax the results to a remote fax machine.
Does anyone know of any software for a server that would let me do this?
I have two sets of drivers to install, one for a wireless device I'm trying to enable and the other is an driver set for a newly installed nVidia graphics card. Both drivers are from the manufacturers site.I'm running Ubuntu 10.04 on a Dell Precision 380.In terminal:
chmod a+x rt2870.bin
then:
./rt2870.bin
[code]...
How can I send an email from localhost via the terminal? I don't need pop just smtp. I believe this can be done with postfix which I have just installed but what is the command to input via the terminal, on my centos box I use the following to send the contents of some files which works just fine but what about sending through postfix on ubuntu?
Code:
sudo tail -50 /home/user/.bash_history | mail -s "bash history" email@mail.com
I just discovered that my server is sending huge amount of data out at about 1Mbps. My immediate thought was the deluge bittorrent client, however it is supposedly not running (and a check confirmed its total active torrents was set to 0). I turned off the network and went in to Firestarter to set the outbound traffic to restrictive, turned on network again and no more data was sent. A look in Firestarter / Events showed a long list of random ports being used (see further down). How can I identify what program is sending all the data?
In Firestarter it doesn't really say much more than the port. Not sure if it is some misconfigured program or a malware/virus. I just got my ADSL connected a few days ago, and before that I used a mobile broadband (3G) as I just relocated. During the period I used the 3G the server might have been without firewall for a few days and it was also at this time I discovered an increase in network traffic (but I didn't really pay much attention at that time). I am running Fedora 10.
List of events from firestarter, my server is 192.168.1.100:
Time:Jun 1 16:48:12 Direction: Outbound In: Out:eth1 Port:39435 Source:192.168.1.100 Destination:58.208.xxx.56 Length:129 TOS:0x00 Protocol:UDP Service:Unknown
Time:Jun 1 16:48:12 Direction: Outbound In: Out:eth1 Port:6990 Source:192.168.1.100 Destination:112.94.xxx.212 Length:129 TOS:0x00 Protocol:UDP Service:Unknown
Time:Jun 1 16:48:12 Direction: Outbound In: Out:eth1 Port:2973 Source:192.168.1.100 Destination:118.93.42.xxx Length:129 TOS:0x00 Protocol:UDP Service:Svnetworks .....
When I am using Mailutils to send messages to myself as a test, I get them but they are from <"ryandward@ryandward"@gmail.com> which is not a valid email address and I have no idea why my system is configured to send them from this address. This is indicative of some problem there is going on in my system.
View 9 Replies View RelatedWhen trying to access my HTC Vogue via bluetooth, I can view all my files EXCEPT the music directory I made on my sd card (which is actually the one i wanted...). When trying to view it, nautilus gives the following error:
Code:
The folder contents could not be displayed. Couldn't parse the incoming data. A quick google revealed [URL]../+s...ez/+bug/310231 however I'm fairly noobish when it comes to compiling so could someone perhaps direct me with the commands? Edit: Sorry forgot to mention its the second post on that website.
how do i delete a folder and its contents from terminal? when i tried to delete the folder it returns a- permission error,,-
View 2 Replies View Relatedi have the following challenge: i have a Bluetooth GPS device that i have connected to my linux notebook. but now i also want to use the same device (or better, GPS data stream) for my Navigation device (HP Ipaq with TomTom). make an serial port bluetooth service (sending) that my Navigation device can connect to. copy the incoming bluetooth serial port data stream to the outgoing bluetooth serial port.
i have already installed GPSD so i have the TCP port where the GPS data is available for everything on my notebook. but now i also want it to send it out through bluetooth.
1. is there someone out there who already did this?
2. how to make an bluetooth serial port service on Fedora 12?
3. how to copy a data stream from 1 device to the next device?