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what I'm sure of is that I can receive multiple connections on the same port as long as the peer's IP and port no are different per connection, not sure for using the same port for read and receive,...

in c socket programming, how can I send and received on the same port?

so from my previous structure, can I pass (message.header.cksum)? which form?

thanks, that solved the problem of uint16, but I'm still not sure how to pass my structure to CRC

e.g.

typedef struct header
{

unsigned short s;
unsigned short d;
...

parse error before "crc16_tab"

static const cyg_uint16 crc16_tab[] = {

shall I change cyg_unit16 to unsigned short int too?

and I do the same changes to "static const uint16_t crc16_tab[] =" ?

Thanks for the link, I've found this in that link (Developers can add #include <stdint.h> to their source code to use the <stdint.h> standard, which they can do even if their compiler is not C99...

#include <stdint.h> is not identified and so
static const uint16_t crc16_tab[]
any hint on that?

I'm trying to implement the CRC code on that link but I'm not sure how to pass a structure of strings (fields) that I'm using to checksum. Any idea?

I gave up on editing this code for C, for now, instead I'll use the other code (polynomial 0x1021).
I should contact the blogger who has posted that code to explain what <<>> is doing. Thank you...

thanks, but is the code in this link CRC16 (http://www.8052.com/users/bigblack/sub_crc16_table.phtml) of the polynomial 0x8005? I couldn't find any note confirming that, can you tell from the code?

How can I change the following code to be in C?

maczor's blog: C# CRC16-IBM / CRC16CCITT (XMODEM) Implementation (http://maczor.blogspot.com/2008/02/c-crc16-ibm-crc16ccitt-xmodem.html)

Is/are there any function(s) in C that convert(s) character/ASCII/Decimal to binary and vice versa?
what about bcopy and strcpy?

the problem is to send a meesage from machine1 to machine2 using UDP,
for TCP the command in unix is

SOCK -t -e Machine1:12345

so what are the command and the options for UDP?

yeah u're right I mean what command in unix shall I use and what options can set a UDP socket

What's the command/options for UDP SOCK (Socket)?

thanks, but what's the difference between this code and using argc and argv arguments in main? is argc for numbers and argv for characters? will it do the work?

I'm new in C, so could you please elaborate.

How can I read from the user input and store each word individually

for example

word1 word2 number1 number2 word 3 number3

server 192.25.1.1 55555 22 logged 15

I need to store and...

now it's very clear and 100% answers my question, thanks.

you've answered 50% of it, if a parent is forked, then fork is called again, will both the parent and the child be forked or only the child, in other words will both of them be forking in parallel?
...

does fork() spawn only the parent process, what if fork() is looped, does it spawn the parent and the child?

any help with this?

here u go SunOS omicron 5.8 Generic_117350-61 sun4u sparc SUNW,Sun-Fire-480R