Binary File Transfer


 
Thread Tools Search this Thread
Top Forums Programming Binary File Transfer
# 1  
Old 03-04-2002
Binary File Transfer

I have written a program in C to transfer files between 2 machines . The program uses UDP . At the server the file is saved in the current directory using fwrite . Everything seems to be working exept for one problem . The binary files gets corrupted on the server . Thats is doing a diff of the files in the server and client says it differs . Though the checksum at the server is passed . The bytes at both server and client matches . But ...
Though it works when it comes to text files being passed .
I am stuck and i have nowhere to go .

The above problem dosent show when i make a TCP connection ....


ANy ideas will be appreciated


DP
# 2  
Old 03-04-2002
UDP is unreliable by intent, I would expect that some datagrams would be lost. I can't believe that there is a difference between ascii and binary data. I can believe that there is a difference between a little bit of data and a lot of data. Could you be using small ascii files and large binary files? And your comment that the bytes match throws me. If the bytes are ok, what more do you ask from a file transfer?
# 3  
Old 03-04-2002
Well What do i ask,
let me explain
I transfer an image over to the server .
Technically speaking The image should open at the server .
The message is Data corrupted ... cant open
Bytes match at server and client
Checksum match at server and client
Works for ascii text
diff command shows binary files at both places differ

Got it ...

I mean wats the use of this program if th binary file cannot make sense

DPSmilie
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

How to set file transfer in binary mode in SFTP using Expect?

The below is my script. /usr/bin/expect<<EOD spawn /usr/bin/sftp -o Port=$PORT $USER@$HOST expect "sftp>" expect "password:" set timout 15 send "$password\r" expect "sftp>" send "lcd $remotedir\r" expect "sftp>" ... (1 Reply)
Discussion started by: Anilsaggu9
1 Replies

2. Shell Programming and Scripting

Convert binary file to csv and then back to the binary format

Hello *nix specialists, Im working for a non profit organisation in Germany to transport DSL over WLAN to people in areas without no DSL. We are using Linksys WRT 54 router with DD-WRT firmware There are at the moment over 180 router running but we have to change some settings next time. So my... (7 Replies)
Discussion started by: digidax
7 Replies

3. UNIX for Dummies Questions & Answers

[AIX] Binary file warning for text file.

Hello guys, We had to move from a DC to another, and we are now facing an "issue" with some text files. Looks like that some of our log files are set as binary: file TuxConnectorURA.20121012 TuxConnectorURA.20121012: data or International Language text less TuxConnectorURA.20121012... (2 Replies)
Discussion started by: EnioMarques
2 Replies

4. Shell Programming and Scripting

Output redirection of c binary file to a file in shell script is failing

I am struck up with a problem and that is with output redirection. I used all the ways for the redirection of the output of c binary to a file, still it is failing. Here are the different ways which I have used: ./a.out | tee -a /root/tmp.txt 2>&1 ./a.out | tee -a /root/tmp.txt 1>&1 ./a.out |... (2 Replies)
Discussion started by: Maya29988
2 Replies

5. UNIX for Advanced & Expert Users

How to copy a binary file while the file is being written to by another process

Hello, Can I copy a binary file while the file is being written to by another process? Another process (program) “P1” creates and opens (for writing) binary file “ABC” on local disk. Process P1 continuously write into ABC file every couple of seconds, adding 512-byte blocks of data. ABC file... (1 Reply)
Discussion started by: mbuki
1 Replies

6. UNIX for Dummies Questions & Answers

Pipe binary file matches grep results to file

I am using grep to match a pattern, but the output is strange. $ grep -r -o "pattern" * Gives me: Binary file foo1 matches Binary file foo2 matches Binary file foo3 matches To find the lines before/after, I then have to use the following on each file: $ strings foo1 | grep -A1 -B1... (0 Replies)
Discussion started by: chipperuga
0 Replies

7. Shell Programming and Scripting

To log binary file output to a txt file

Hi, I wrote a small script whose function is to execute the postemsg provided if the threshold breaches. I want to log this postemsg messages to a log file. But I am not able to do. Can someone throw some light on how to log the output of this. I am pasting a snippet of that code. ... (2 Replies)
Discussion started by: dbashyam
2 Replies

8. Programming

Binary file

Hi all I have a C program to write it's output into a textfile which is also created by the program in between. The file that's get created prompt's a message while opening manually that the file is binary and any change in that leads to it's corruption. I have used putc() to write the output... (2 Replies)
Discussion started by: joshighanshyam
2 Replies

9. Solaris

compiled binary file gives "cannot execute binary file"

Hi, I have two Solaris machines. 1. SunOS X 5.8 Generic_108528-29 sun4u sparc SUNW,Sun-Blade-1500 2. SunOS Y 5.8 Generic_108528-13 sun4u sparc SUNW,Ultra-60 I am trying to buiild a project on both these machines. The Binary output file compiled on machine 2 runs on both the machines. Where... (0 Replies)
Discussion started by: scgupta
0 Replies

10. UNIX for Dummies Questions & Answers

binary file

please let me know how can i mail the binary files is it can be done thru pine? is there any other way to do it? wat are the changes in system i have to make and one more thing i am sending data to a message queue and then retriving the data from the queue but when i do the ipcs... (1 Reply)
Discussion started by: ramneek
1 Replies
Login or Register to Ask a Question