hi,
i've recently started to deal a little bit with tcp/ip-socket-programming
(linux).
Now i've written a little test-program (as displayed further down).
When i'm trying to compile it the gcc-compiler return "parse error in
l.23/.24 before token '='. "
the line before those two ( host_addr.sin_family = AF_INET;) is acepted
without any problems.
I'd be happy if anybody could tell me where's my fault.
Thanks a lot.
I'm sorry for mistakes in my english.
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#define host_IP = "127.0.0.1"; //IP only for test purpose
#define host_PORT = 1024; //port number only for test purpose
int main(void)
{
int sock;
struct sockaddr_in host_addr;
sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock == -1)
printf("couldn't establish socket.\n");
else
printf("socket created.\n");
host_addr.sin_family = AF_INET;
// l. 23// host_addr.sin_port = htons(host_PORT);
//l. 24// host_addr.sin_addr.s_addr = inet_addr(host_IP);
if (connect(sock, (struct sockaddr *)&host_addr,sizeof(&host_addr)) != -1)
printf("connected to server.\n");
else
printf("couldn't connect.\n");
close(sock);
printf("socket closed.\n");
} 7 1516
selekta wrote: hi,
i've recently started to deal a little bit with tcp/ip-socket-programming (linux). Now i've written a little test-program (as displayed further down). When i'm trying to compile it the gcc-compiler return "parse error in l.23/.24 before token '='. " the line before those two ( host_addr.sin_family = AF_INET;) is acepted without any problems. I'd be happy if anybody could tell me where's my fault.
Thanks a lot.
I'm sorry for mistakes in my english.
#include <stdio.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <unistd.h>
#define host_IP = "127.0.0.1"; //IP only for test purpose #define host_PORT = 1024; //port number only for test purpose
The preprocessor directive #define should be seen as nothing
more than a text-processor 'find-replace' operation. So what
happens below where you get compiler errors is that
'host_PORT'
is literally replaced with
'= 1024;'
Looking at your code below, clearly this is an error. So:
#define host_PORT 1024
BTW, it is a kind of non-written rule to write #define'd names
in capitals: 'HOST_PORT'.
Same for 'host_IP'.
Many compiler have a switch to spit out the code after preprocessing.
In a few well known compilers this is the -E switch. Can be handy
in cases like this. int main(void) { int sock; struct sockaddr_in host_addr;
sock = socket(AF_INET, SOCK_STREAM, 0); if (sock == -1) printf("couldn't establish socket.\n"); else printf("socket created.\n");
host_addr.sin_family = AF_INET; // l. 23// host_addr.sin_port = htons(host_PORT); //l. 24// host_addr.sin_addr.s_addr = inet_addr(host_IP);
if (connect(sock, (struct sockaddr *)&host_addr,sizeof(&host_addr)) != -1) printf("connected to server.\n"); else printf("couldn't connect.\n");
close(sock); printf("socket closed.\n"); }
Your defines shall not have any =
#define host_IP "127.0.0.1"; //IP only for test purpose
#define host_PORT 1024; //port number only for test purpose
"selekta" <n.*****@gmx.net> wrote in message
news:c9*************@news.t-online.com... hi,
i've recently started to deal a little bit with tcp/ip-socket-programming (linux). Now i've written a little test-program (as displayed further down). When i'm trying to compile it the gcc-compiler return "parse error in l.23/.24 before token '='. " the line before those two ( host_addr.sin_family = AF_INET;) is acepted without any problems. I'd be happy if anybody could tell me where's my fault.
Thanks a lot.
I'm sorry for mistakes in my english.
#include <stdio.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <unistd.h>
#define host_IP = "127.0.0.1"; //IP only for test purpose #define host_PORT = 1024; //port number only for test purpose
int main(void) { int sock; struct sockaddr_in host_addr;
sock = socket(AF_INET, SOCK_STREAM, 0); if (sock == -1) printf("couldn't establish socket.\n"); else printf("socket created.\n");
host_addr.sin_family = AF_INET; // l. 23// host_addr.sin_port = htons(host_PORT); //l. 24// host_addr.sin_addr.s_addr = inet_addr(host_IP);
if (connect(sock, (struct sockaddr *)&host_addr,sizeof(&host_addr))
!= -1) printf("connected to server.\n"); else printf("couldn't connect.\n");
close(sock); printf("socket closed.\n"); }
On Tue, 1 Jun 2004, Devrobcom wrote:
D>Your defines shall not have any =
D>#define host_IP "127.0.0.1"; //IP only for test purpose
D>#define host_PORT 1024; //port number only for test purpose
They also should not have a ';'.
harti
D>
D>"selekta" <n.*****@gmx.net> wrote in message
D>news:c9*************@news.t-online.com...
D>> hi,
D>>
D>> i've recently started to deal a little bit with tcp/ip-socket-programming
D>> (linux).
D>> Now i've written a little test-program (as displayed further down).
D>> When i'm trying to compile it the gcc-compiler return "parse error in
D>> l.23/.24 before token '='. "
D>> the line before those two ( host_addr.sin_family = AF_INET;) is acepted
D>> without any problems.
D>> I'd be happy if anybody could tell me where's my fault.
D>>
D>> Thanks a lot.
D>>
D>> I'm sorry for mistakes in my english.
D>>
D>> #include <stdio.h>
D>> #include <sys/types.h>
D>> #include <sys/socket.h>
D>> #include <netinet/in.h>
D>> #include <arpa/inet.h>
D>> #include <unistd.h>
D>>
D>> #define host_IP = "127.0.0.1"; //IP only for test purpose
D>> #define host_PORT = 1024; //port number only for test purpose
D>>
D>> int main(void)
D>> {
D>> int sock;
D>> struct sockaddr_in host_addr;
D>>
D>> sock = socket(AF_INET, SOCK_STREAM, 0);
D>> if (sock == -1)
D>> printf("couldn't establish socket.\n");
D>> else
D>> printf("socket created.\n");
D>>
D>> host_addr.sin_family = AF_INET;
D>> // l. 23// host_addr.sin_port = htons(host_PORT);
D>> //l. 24// host_addr.sin_addr.s_addr = inet_addr(host_IP);
D>>
D>> if (connect(sock, (struct sockaddr *)&host_addr,sizeof(&host_addr))
D>!= -1)
D>> printf("connected to server.\n");
D>> else
D>> printf("couldn't connect.\n");
D>>
D>> close(sock);
D>> printf("socket closed.\n");
D>> }
D>>
D>>
D>
D>
D>
selekta wrote:
.... snip ... #include <stdio.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <unistd.h>
None of the above, apart from stdio.h, are defined in standard C.
Thus it is impossible to deal with your problems in this
newsgroup. You need a system specific group. #define host_IP = "127.0.0.1"; //IP only for test purpose #define host_PORT = 1024; //port number only for test purpose
Do not use // comments in newsgroups, they do not survive line
wrapping particularly well. int main(void) { int sock; struct sockaddr_in host_addr;
because things like this are undefined here.
--
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?
CBFalconer <cb********@yahoo.com> scribbled the following: selekta wrote: ... snip ... #include <stdio.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <unistd.h>
None of the above, apart from stdio.h, are defined in standard C. Thus it is impossible to deal with your problems in this newsgroup. You need a system specific group.
#define host_IP = "127.0.0.1"; //IP only for test purpose #define host_PORT = 1024; //port number only for test purpose
Do not use // comments in newsgroups, they do not survive line wrapping particularly well.
Way to miss the real problem completely, CBFalconer.
int main(void) { int sock; struct sockaddr_in host_addr;
because things like this are undefined here.
--
/-- Joona Palaste (pa*****@cc.helsinki.fi) ------------- Finland --------\
\-- http://www.helsinki.fi/~palaste --------------------- rules! --------/
"How can we possibly use sex to get what we want? Sex IS what we want."
- Dr. Frasier Crane
In article <40***************@yahoo.com>,
CBFalconer <cb********@worldnet.att.net> wrote: Thus it is impossible to deal with your problems in this newsgroup.
And yet, remarkably, several people did.
-- Richard
Richard Tobin wrote: CBFalconer <cb********@worldnet.att.net> wrote:
Thus it is impossible to deal with your problems in this newsgroup.
And yet, remarkably, several people did.
More power to them. You concealed it behind a mass of uncheckable
code very well.
--
fix (vb.): 1. to paper over, obscure, hide from public view; 2.
to work around, in a way that produces unintended consequences
that are worse than the original problem. Usage: "Windows ME
fixes many of the shortcomings of Windows 98 SE". - Hutchison This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
by: John |
last post by:
I have a Socket open to a target system. I get the network stream from the
open socket and then create a stream reader and stream writer on this
stream. The stream reader and writers are operating...
|
by: Michael Rybak |
last post by:
Hi, everyone.
In topic "2-player game, client and server at localhost", I've asked
about subj, and Peter Hansen suggested to switch to Twisted, Pyro or
the like.
I've tried using Pyro.
I've...
|
by: HIL |
last post by:
Hi everybody,
I wrote a python script to setup my network interface under Linux. To
perform it, I use directly from my python script external programs as
'ifconfig' and 'route' ans I fill the...
|
by: Bruce Vander Werf |
last post by:
I am developing a network client application (using the Socket class)
that will need to make simultaneous TCP connections to many (100 or
more) servers. In this case, which would be a better...
|
by: Vijay |
last post by:
Hi all,
i have TCP client server application written in C# using async
socket methods, eg BeginReceive(), BeginEnd() etc
server is continuesly running in the background, client connect to...
|
by: Charles Pratt |
last post by:
I'm having trouble with a network chat based server I'm working on in
C#, It works find during the reads, but as soon as I start sending back
data my reads from that point on are corrupted. If...
|
by: simonrigby_uk |
last post by:
Hi all,
Sorry if this is the incorrect group but I couldn't see anything
directly relevant.
Can someone confirm for me what happens when two network streams are
sent to an application at the...
|
by: Ivan Voras |
last post by:
I have a simple network protocol client (it's a part of this:
http://sqlcached.sourceforge.net) implemented in Python, PHP and C.
Everything's fine, except that the Python implementation is the...
|
by: dumbkiwi |
last post by:
I have written a script that uses the urllib2 module to download web
pages for parsing.
If there is no network interface, urllib2 hangs for a very long time
before it raises an exception. I...
|
by: 7stud |
last post by:
I have the following two identical clients
#test1.py:-----------
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = 'localhost'
port = 5052 #server port
|
by: ryjfgjl |
last post by:
ExcelToDatabase: batch import excel into database automatically...
|
by: isladogs |
last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM).
In this month's session, we are pleased to welcome back...
|
by: isladogs |
last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM).
In this month's session, we are pleased to welcome back...
|
by: Vimpel783 |
last post by:
Hello!
Guys, I found this code on the Internet, but I need to modify it a little. It works well, the problem is this: Data is sent from only one cell, in this case B5, but it is necessary that data...
|
by: jfyes |
last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
|
by: Defcon1945 |
last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
|
by: Shællîpôpï 09 |
last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
|
by: Faith0G |
last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome former...
| |