WFM with 'g++ -o sock sock.cpp'.
Your gcc/g++ is out of date, though I doubt that's the main problem. See
<http://cygwin.com/problems.html> if you need to post again for help on
this issue.
Thanks,
Larry
At 09:52 AM 1/31/2004, Graham Walsh you wrote:
>Hiya, first time using cygwin.... I have a linker error when compiling a stock socket
>app. All I use is standard calls to socket, bind etc. etc.
>
>All the symbols usually located in libsocket.so on unix are missing, i.e. bind,
>socket, etc. etc. I am at a loss as to what to link against. If anybody knows the
>compilation and link options I need it would help me out completely. I am assuming
>that the standard cygwin release provides all the libs I need to do this type of unix
>coding on my humble XP box. If I've missed anything, please let me know. I am using
>GCC v3.2 on an XP machine with the latest cygwin installation.
>
>
>my goal here is simply to write unix style code with gcc on my xp box.
>
>
>Cheers,
>
>
>GrahamO
>
>
>#include <stdio.h>
>#include <sys/types.h>
>#include <sys/socket.h>
>#include <netinet/in.h>
>#include <netdb.h>
>#include <unistd.h>
>#include <string.h>
>#include <arpa/inet.h>
>#include <stdlib.h>
>#define PORT 3550 /* Port that will be opened */
>#define BACKLOG 2 /* Number of allowed connections */
>extern "C" int close(int);
>extern "C" void bzero(void *, size_t);
>using namespace std;
>main()
>{
> int fd, fd2; /* file descriptors */
> struct sockaddr_in server; /* server's address information */
> struct sockaddr_in client; /* client's address information */
> int sin_size;
> if ((fd=socket(AF_INET, SOCK_STREAM, 0)) == -1 )
> { /* calls socket() */
> printf("socket() error\n");
> exit(-1);
> }
> server.sin_family = AF_INET;
> server.sin_port = htons(PORT); /* Remember htons() from "Conversions" section? =)
> */
> server.sin_addr.s_addr = INADDR_ANY; /* INADDR_ANY puts your IP address
> automatically */
>// bzero(&(server.sin_zero),8); /* zero the rest of the structure */
>// void *memset (void *ptr, int val, size_t len);
> memset(&(server.sin_zero), 0, 8);
>
> if(bind(fd,(struct sockaddr*)&server,sizeof(struct sockaddr))==-1){ /* calls bind()
> */
> printf("bind() error\n");
> exit(-1);
>
> }
> if(listen(fd,BACKLOG) == -1){ /* calls listen() */
> printf("listen() error\n");
> exit(-1);
> }
>while(1){
> sin_size=sizeof(struct sockaddr_in);
> if ((fd2 = accept(fd,(struct sockaddr *)&client,&sin_size))==-1){ /* calls accept()
> */
> printf("accept() error\n");
> exit(-1);
> }
>
> printf("You got a connection from %s\n",inet_ntoa(client.sin_addr) ); /* prints
> client's IP */
>
> send(fd2,"Welcome to my server.\n",22,0); /* send to the client welcome message */
>
> close(fd2); /* close fd2 */
>}
>}
>/* <---- SOURCE CODE ENDS HERE ----> */
>
>_________________________________________________________________
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>
>
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--
Larry Hall http://www.rfk.com
RFK Partners, Inc. (508) 893-9779 - RFK Office
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