Help with sending char array over socket

mjheagle8 · 2011-06-25 21:36:06

Hello everybody.

I am writing a program in c, and I'm sending the data from a client struct to the daemon over socket.
I serialize the data with

       char[100] msgbuf;
       sprintf(msgbuf, "%s|%s|%d|%d", message->body, message->id, message->dur, message->tstart);

for debug, I printed msgbuf, and it looked as I would expect:

test message|test id|10|1309036867

however, the log from the daemon shows this as the string received:

test messagew(w

EDIT: looks like garbage chars didn't print, but they start before the w and after the e

both daemon and client are on the same machine.
deserialization fails, but thats bc the string sscanf is operating on is garbage.
I googled, but could not find anything useful.
any assistance or pointers (pun intended) greatly appreciated!

--mjheagle

Last edited by mjheagle8 (2011-06-26 02:26:34)

ewaller · 2011-06-25 22:52:54

A few things. First, note that BBCode uses [ ] , not < >
Okay, msgbuf is crated correctly, but you don't show the rest of the code up to where it is sent. It is probably being stepped on by something.
How are you sending it?
Likewise, you don't show how you are receiving it -- what daemon ??

mjheagle8 · 2011-06-26 02:29:01

lol, sorry about the tags.

here's the program:
http://pastebin.com/8S4UjMdp

thanks in advance for your help.

Cerebral · 2011-06-26 02:56:35

You're not sending what you say you are. Take a good close look at this code and you should figure it out.

        bzero(msgbuf, IDLEN+BODYLEN);
        sprintf(msgbuf, "%s|%s|%d|%d", message->body, message->id, message->dur, message->tstart);
        printf("%s\n", msgbuf);
        write(sockfd, message->body, strlen(message->body));

mjheagle8 · 2011-06-26 03:26:37

ok, i got it. thanks for your help. cant believe i made such foolish mistake.

Arch Linux

#1 2011-06-25 21:36:06

Help with sending char array over socket

#2 2011-06-25 22:52:54

Re: Help with sending char array over socket

#3 2011-06-26 02:29:01

Re: Help with sending char array over socket

#4 2011-06-26 02:56:35

Re: Help with sending char array over socket

#5 2011-06-26 03:26:37

Re: Help with sending char array over socket

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