[ale] Socket Programming

Chris Fowler ChrisF at computone.com
Tue Jun 5 13:59:55 EDT 2001 


<SPAN 
class=746544717-05062001>Well,
<SPAN 
class=746544717-05062001> 
I 
compiled and ran under Cygwin.  It yields same results!.  Apparently 
I'm going to have to investigate internals.
<SPAN 
class=746544717-05062001> 
<SPAN 
class=746544717-05062001>Chris

  <FONT face=Tahoma 
  size=2>-----Original Message-----From: Bao C. Ha 
  [mailto:baoha at sensoria.com]Sent: Tuesday, June 05, 2001 11:53 
  AMTo: Chris FowlerCc: ale at ale.orgSubject: RE: 
  [ale] Socket Programming
  Have 
  you tried to open it with O_NOCTTY also?
  <SPAN 
  class=525445015-05062001> 
  open(argv[1], 
  O_RDWR | 
  O_NOCTTY)
  <SPAN 
  class=525445015-05062001> 
  <SPAN 
  class=525445015-05062001>It prevents a break to kill the session.  It is 
  Unix thing and
  <SPAN 
  class=525445015-05062001>I don't know if it works with win32 or 
  not.
  <SPAN 
  class=525445015-05062001> 
  <SPAN 
  class=525445015-05062001>Bao
  <BLOCKQUOTE 
  style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">
    <FONT face=Tahoma 
    size=2>-----Original Message-----From: owner-ale at ale.org 
    [mailto:owner-ale at ale.org]On Behalf Of Chris FowlerSent: 
    Tuesday, June 05, 2001 8:36 AMTo: 'Vernard Martin'Cc: 
    'ale at ale.org'Subject: RE: [ale] Socket 
    Programming
    Vernard, 
    You know much about Win32 programming? 
    I need to sucessfully run this piece of UNIX OK code in 
    winbloze /* terminal.c <FONT 
    size=2> *  *  Small program to allow 
    running of an excutable  * <FONT 
    size=2> *  Arguments: <FONT 
    size=2> *      
            argv[1]: PORT to be input and 
    output  *      
            argv[2]: Console application to 
    execute on the serial port defined  * 
     */    
    #include <fcntl.h> <FONT 
    size=2>#include <stdio.h> 
    int main(int argc, char 
    *argv[]) { 
            
            int fd; 
            
            /* check arguments 
    */         
            if(argc != 3) 
            
            { 
            
            
            printf("terminal 
    [serial port] [command shell to execute]\n"); 
            
            
            exit(1); 
            
            } 
            
            
            
            /* Open Serial Port 
    */         
            if((fd = 
    open(argv[1], O_RDWR)) == -1) 
            
            { 
            
            
            perror("terminal: 
    OPEN COM");         
            
            exit(1); 
            
            } 
            
            
            
            /* Set STDIN, 
    STDOUT, STDERR to the serial port */ 
            
            dup2(fd, 0); 
            
            dup2(fd, 1); 
            
            dup2(fd, 2); 
    
            
            /* Execute the 
    command specified */         
            <FONT 
    size=2>execl(argv[2],argv[2], 0); 
            
            
            
            /* If we are here, 
    there is an issue! */         
            <FONT 
    size=2>perror("terminal"); 
            
            return 1; 
    } 
    What happens: 
    cmd.exe comes across COM1.  But, on terminal, I can not 
    type anything and it appears that cmd.exe has 
    terminated.  Sorry for the windows post. 
    Any help would be appreciated. 
    Thanks, Chris 
    -----Original Message----- From: 
    Vernard Martin [<A 
    href="mailto:vernard at cc.gatech.edu">mailto:vernard at cc.gatech.edu] 
    Sent: Tuesday, June 05, 2001 11:07 AM <FONT 
    size=2>To: Fulton Green Cc: Terry Lee Tucker; 
    ale at ale.org Subject: Re: [ale] Socket 
    Programming 
    > When I was learning sockets back in '98, I found the 
    book _Beginning Linux > Programming_ to be 
    invaluable for a quick start. Then I got the _UNIX <FONT 
    size=2>> Network Programming_ book by Richard Stevens to go more 
    in-depth. 
    By far the most in-depth book for doing any unix network 
    programming is the Stevens book. A must have book in 
    my library. 
    V -- Vernard 
    Martin (vernard at cc.gatech.edu) <A href="http://www.cc.gatech.edu/~vernard/" 
    target=_blank>http://www.cc.gatech.edu/~vernard/     
            "Anything 
    worth fighting over is worth fighting dirty over" <FONT 
    size=2>-- To unsubscribe: mail majordomo at ale.org 
    with "unsubscribe ale" in message body.

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