<div>
It would make more sense to print the number of bytes read instead of entire buffer.
</div>


It would make more sense to print the number of bytes read instead of entire buffer.

<div>
make sure your buffer is unsigned, or you may have your hex results mangled with memory addresses.<br />
<br />
unsigned char buf[2048];<br />
int recvLen;<br />
int i;<br />
<br />
//*initialize socket<br />
<br />
recvLen = recv(socket,buf,sizeof[buf<wbr />]);<br />
<br />
for (i=0; i &lt;&nbsp;recvLen; i++) {<br />
&nbsp; &nbsp; &nbsp;printf(&quot;%02x &quot;, buf[i]); &nbsp; //*space after the 'x' to make readable.<br />
}<br />

</div>


make sure your buffer is unsigned, or you may have your hex results mangled with memory addresses.

unsigned char buf[2048];
int recvLen;
int i;

//*initialize socket

recvLen = recv(socket,buf,sizeof[buf]);

for (i=0; i < recvLen; i++) {
     printf("%02x ", buf[i]);   //*space after the 'x' to make readable.
}


<div>
&gt;make sure your buffer is unsigned, or you may have your hex results mangled with memory addresses.<br />
why would that happen?
</div>


>make sure your buffer is unsigned, or you may have your hex results mangled with memory addresses.
why would that happen?

<div>
<div class="content wysiwyg-content">
Hi,<br />
<br />
Can someone please tell me how to print the octets (in hex format) of data received from socket in linux using C programming?<br />
<br />
the data received is stored in pipebuf.<br />
<br />
Thanks<br />

<pre><code id="code-249128">read(pipe_fd, &amp;rgptr, sizeof(rgptr));
memcpy(pipebuf, rgptr, config.buffer_size);
</code></pre>
</div>
</div>


Hi,

Can someone please tell me how to print the octets (in hex format) of data received from socket in linux using C programming?

the data received is stored in pipebuf.

Thanks

C program to print octets from receiving from a socket

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.