Attachment 150652 Details for Bug 196035 – Sample program to reproduce

Sample program to reproduce

file_196035.txt (text/plain), 1.29 KB, created by Mark Nunberg on 2014-12-16 19:10:07 UTC

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Creator: Mark Nunberg

Created: 2014-12-16 19:10:07 UTC

Size: 1.29 KB

patch

obsolete

>#include <sys/socket.h>
>#include <sys/select.h>
>#include <arpa/inet.h>
>#include <netinet/in.h>
>#include <assert.h>
>#include <fcntl.h>
>#include <string.h>
>#include <stdlib.h>
>#include <stdio.h>
>#include <errno.h>
>
>int main(int argc, char **argv)
>{
>    struct sockaddr_in inaddr;
>    int s;
>    int rv;
>    fd_set wfd, efd;
>    
>    s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
>    assert(s > -1);
>
>    memset(&inaddr, 0, sizeof inaddr);
>
>    inaddr.sin_family = AF_INET;
>    inaddr.sin_addr.s_addr = inet_addr("127.0.0.1");
>    inaddr.sin_port = htons(1); /* :1 */
>
>    /* Set noblock */
>    rv = fcntl(s, F_GETFL);
>    assert(rv > -1);
>    rv = fcntl(s, F_SETFL, rv|O_NONBLOCK);
>    assert(rv > -1);
>
>    rv = connect(s, (struct sockaddr *)&inaddr, sizeof inaddr);
>    assert(rv < 0);
>    if (errno != EINPROGRESS) {
>        perror("UNEXPECTED!");
>        exit(EXIT_FAILURE);
>    }
>
>    FD_ZERO(&wfd);
>    FD_ZERO(&efd);
>
>    FD_SET(s, &wfd);
>    FD_SET(s, &efd);
>    rv = select(s+1, NULL, &wfd, &efd, NULL);
>    assert(rv == 1);
>    assert(! FD_ISSET(s, &efd));
>    assert(FD_ISSET(s, &wfd));
>
>    rv = connect(s, (struct sockaddr *)&inaddr, sizeof inaddr);
>    printf("Second connect returns ERRNO %d (%s)\n", errno, strerror(errno));
>    return EXIT_SUCCESS;
>}

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