59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "ndelay.h"
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#include "select.h"
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#include "error.h"
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#include "readwrite.h"
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#include "ip.h"
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#include "byte.h"
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#include "timeoutconn.h"
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int timeoutconn(s,ip,port,timeout)
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int s;
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struct ip_address *ip;
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unsigned int port;
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int timeout;
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{
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char ch;
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struct sockaddr_in sin;
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char *x;
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fd_set wfds;
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struct timeval tv;
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byte_zero(&sin,sizeof(sin));
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byte_copy(&sin.sin_addr,4,ip);
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x = (char *) &sin.sin_port;
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x[1] = port; port >>= 8; x[0] = port;
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sin.sin_family = AF_INET;
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if (ndelay_on(s) == -1) return -1;
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/* XXX: could bind s */
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if (connect(s,(struct sockaddr *) &sin,sizeof(sin)) == 0) {
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ndelay_off(s);
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return 0;
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}
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if ((errno != error_inprogress) && (errno != error_wouldblock)) return -1;
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FD_ZERO(&wfds);
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FD_SET(s,&wfds);
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tv.tv_sec = timeout; tv.tv_usec = 0;
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if (select(s + 1,(fd_set *) 0,&wfds,(fd_set *) 0,&tv) == -1) return -1;
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if (FD_ISSET(s,&wfds)) {
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int dummy;
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dummy = sizeof(sin);
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if (getpeername(s,(struct sockaddr *) &sin,&dummy) == -1) {
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read(s,&ch,1);
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return -1;
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}
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ndelay_off(s);
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return 0;
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}
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errno = error_timeout; /* note that connect attempt is continuing */
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return -1;
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}
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