How to send and receive images through C programming

Question

1.00/5 (1 vote)

See more:

Hi,

I would like to know how to send and receive messages in C programming
a. is it really possible to send and receive images in C
b. i tried few codes but i am not even able to receive byte array of the images..

Posted 1-Jan-15 19:00pm

venkat28vk

Add a Solution

Comments

George Jonsson 2-Jan-15 1:10am

Send and receive where?
Between two classes, two processes or two computers?

venkat28vk 2-Jan-15 1:36am

hi
i am using tcp/ip programming, i think you must be aware of sending and receiving text between a server and client, similarly i have to send and receive images i hope this clarifies your doubt...

George Jonsson 2-Jan-15 1:40am

I have no doubts, just questions.
I also cannot read your mind, hence the need for more info.
Are you using a socket?

venkat28vk 2-Jan-15 1:51am

i am sorry for not specifying correctly... you are right i am using sockets to send and receive images. can this be achieved in the above

venkat28vk 2-Jan-15 4:02am

Hi george thanks for the answer you have provided, do you have any idea how does it work in unix because i am not using windows, i am using ubuntu so you must be aware how the code differs to the various environment.... and i would be glad if you could provide a sample code for the above

Richard MacCutchan 2-Jan-15 4:57am

The issue is exactly the same on any operating system.
Read a block (some number) of bytes from the source file.
Send it to the receiving station, with an indication of how many bytes in the block.
Repeat until all data has been sent.

At the receiving station:
Receive a block of data, with its length.
Write the data to a file.
Repeat until the sender says there is no more data.

venkat28vk 2-Jan-15 5:48am

ok thanks a lot i shall try that and see

George Jonsson 2-Jan-15 9:08am

I added some links where you can get tutorials for Linux.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

George Jonsson · Accepted Answer · 2015-01-01T20:02:00

It should be no problem to send an image via sockets in C.
Here is a tutorial for how to use sockets on Windows: Winsock tutorial – Socket programming in C on windows[^]

An image, or any data stored as a file, can be seen as a stream of binary data.
Hence, you can easily read the contents of any file into a buffer and send and receive the buffer over TCP/IP.

Use fopen and fread on the sending side and on the receiving side fopen and fwrite.
There should be plenty of examples out there for how to read and write binary files.

[UPDATE]
As the OP has stated that Linux is used, I add some links for sockets on Linux as well.
Sockets Tutorial[^]
Socket programming in C on Linux – tutorial[^]
Networking and Socket programming tutorial in C[^]