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UBind.c
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C/C++ Source or Header
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2003-08-31
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1KB
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61 lines
#include "syshdrs.h"
#ifdef PRAGMA_HDRSTOP
# pragma hdrstop
#endif
int
UBind(int sockfd, const char *const astr, const int nTries, const int reuseFlag)
{
unsigned int i;
int on;
sockopt_size_t onsize;
struct sockaddr_un localAddr;
sockaddr_size_t ualen;
if ((astr == NULL) || (astr[0] == '\0')) {
errno = EINVAL;
return (-1);
}
ualen = (sockaddr_size_t) MakeSockAddrUn(&localAddr, astr);
(void) unlink(localAddr.sun_path);
if (reuseFlag != kReUseAddrNo) {
/* This is mostly so you can quit the server and re-run it
* again right away. If you don't do this, the OS may complain
* that the address is still in use.
*/
on = 1;
onsize = (sockopt_size_t) sizeof(on);
(void) setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR,
&on, onsize);
}
for (i=1; ; i++) {
/* Try binding a few times, in case we get Address in Use
* errors.
*/
if (bind(sockfd, (struct sockaddr *) &localAddr, ualen) == 0) {
break;
}
if (i == (unsigned int) nTries) {
return (-1);
}
/* Give the OS time to clean up the old socket,
* and then try again.
*/
sleep(i * 3);
}
return (0);
} /* UBind */
int
UListen(int sfd, int backlog)
{
return (listen(sfd, (listen_backlog_t) backlog));
} /* UListen */