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From: Bill Cunningham on 17 May 2010 18:55 "Ian Collins" <ian-news(a)hotmail.com> wrote in message news:85dvg9F47oU1(a)mid.individual.net... [...] > Using functions at random are we? Well I didn't think it would hurt to have it there. And it doesn't. Somewhere else in the operation of the program is a bug and error checking doesn't seem to be helping me. I've tried all I know. I hate to be defeated like this but not suprised. Wait til I get into the Stevens book deep. BIll
From: Bill Cunningham on 17 May 2010 18:57 "Scott Lurndal" <scott(a)slp53.sl.home> wrote in message news:nKjIn.307794$KH2.262040(a)news.usenetserver.com... [...] > hint: man getaddrinfo, and pay special attention to the node argument. Oh no no not there man I know those parameters in my sleep. What do I do with the core dump use gdb? Aw let me see... Bill
From: John Gordon on 18 May 2010 10:35 In <4bf1bfb1$0$12459$bbae4d71(a)news.suddenlink.net> "Bill Cunningham" <nospam(a)nspam.invalid> writes: > All I get when I add main() and call the client() function is a sstring of > decimals. Wait, so the program is working now? You don't get a seg fault anymore? In any case, I compiled and ran your code and did not get a segfault. I got a zero printed on the output, just as expected. > And I also include the header func.h that I wrote that defines this. > int client(char *, char *); It really helps if you can post a complete example of your code all at once, rather than feeding us little bits and pieces like this. -- John Gordon A is for Amy, who fell down the stairs gordon(a)panix.com B is for Basil, assaulted by bears -- Edward Gorey, "The Gashlycrumb Tinies"
From: Scott Lurndal on 18 May 2010 15:08 "Bill Cunningham" <nospam(a)nspam.invalid> writes: > >"Scott Lurndal" <scott(a)slp53.sl.home> wrote in message >news:nKjIn.307794$KH2.262040(a)news.usenetserver.com... >[...] > >> hint: man getaddrinfo, and pay special attention to the node argument. > > Oh no no not there man I know those parameters in my sleep. What do I do >with the core dump use gdb? Aw let me see... > >Bill > > You are passing NULL as the arg to client, which is then passed as the 'node' argument to getaddrinfo. Getaddrinfo will segfault if you pass NULL as the node argument, which should be either the hostname or dotted-quad IP address for the server. scott
From: Bill Cunningham on 18 May 2010 17:14
"Scott Lurndal" <scott(a)slp53.sl.home> wrote in message news:rABIn.52890$y07.52111(a)news.usenetserver.com... [snip] > You are passing NULL as the arg to client, which is then passed as the > 'node' argument to getaddrinfo. Getaddrinfo will segfault if you pass > NULL as the node argument, which should be either the hostname or > dotted-quad > IP address for the server. I believe you are right in some cases. Any concerning a client socket. But I have passed NULL to parameter 1 of getaddrinfo() before and had no problem but certain conditions must be met. I can't remember right off the top of my head because I haven't done this in a while. As far as my client() function goes I am passing to its first parameter a NULL yes. The second paramter of the getaddrinfo function always must be a port number. Bill |