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63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
#include "syshdrs.h"
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int
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SBind(int sockfd, const int port, const int nTries, const int reuseFlag)
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{
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unsigned int i;
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int on;
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int onsize;
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struct sockaddr_in localAddr;
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localAddr.sin_family = AF_INET;
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localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
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localAddr.sin_port = htons((unsigned short) port);
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if (reuseFlag != kReUseAddrNo) {
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/* This is mostly so you can quit the server and re-run it
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* again right away. If you don't do this, the OS may complain
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* that the address is still in use.
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*/
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on = 1;
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onsize = (int) sizeof(on);
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(void) setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR,
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(char *) &on, onsize);
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#ifdef SO_REUSEPORT
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/* Tells kernel that it's okay to have more
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* than one process originating from this
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* local port.
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*/
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on = 1;
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onsize = (int) sizeof(on);
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(void) setsockopt(sockfd, SOL_SOCKET, SO_REUSEPORT,
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(char *) &on, onsize);
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#endif /* SO_REUSEPORT */
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}
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for (i=1; ; i++) {
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/* Try binding a few times, in case we get Address in Use
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* errors.
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*/
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if (bind(sockfd, (struct sockaddr *) &localAddr, sizeof(struct sockaddr_in)) == 0) {
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break;
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}
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if ((int) i == nTries) {
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return (-1);
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}
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/* Give the OS time to clean up the old socket,
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* and then try again.
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*/
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sleep(i * 3);
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}
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return (0);
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} /* SBind */
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int
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SListen(int sfd, int backlog)
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{
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return (listen(sfd, (unsigned int) backlog));
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} /* SListen */
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