Nils O. Selåsdal
88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
#ifndef FD_UTILS_H_
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#define FD_UTILS_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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// inspect errno if any of these fails
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/**
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* set the file descriptor to non-blocking
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* @param fd file descriptor
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* @return 0 on success -1 on failure
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*/
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int uc_set_nonblocking(int fd);
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/**
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* set the file descriptor to blocking
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* @param fd file descriptor
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* @return 0 on success -1 on failure
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*/
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int uc_set_blocking(int fd);
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/**
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* set the socket file descriptor to SO_REUSEADDR
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* @param fd file descriptor
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* @return 0 on success -1 on failure
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*/
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int uc_set_reuseaddr(int sockfd);
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/**
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* enable TCP keepalive on the socket
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* @param fd file descriptor
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* @return 0 on success -1 on failure
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*/
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int uc_set_tcp_keepalive(int sockfd);
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struct UCKeepConfig {
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/** The maximum number of keepalive probes TCP should
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* send before dropping the connection. (TCP_KEEPCNT socket option)
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*/
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int keepcnt;
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/** The time (in seconds) the connection needs to remain
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* idle before TCP starts sending keepalive probes (TCP_KEEPIDLE socket option)
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*/
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int keepidle;
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/** The time (in seconds) between individual keepalive probes.
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* (TCP_KEEPINTVL socket option)
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*/
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int keepintvl;
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};
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/** Set the keepalive options on the socket
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* This also enables TCP keepalive on the socket
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*
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* @param fd file descriptor
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* @param fd file descriptor
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* @return 0 on success -1 on failure
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*/
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int uc_set_tcp_keepalive_cfg(int sockfd, const struct UCKeepConfig *cfg);
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/**
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* Set the socket send timeout, in miliseconds
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* @param fd file descriptor
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* @return 0 on success -1 on failure
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*/
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int uc_set_send_timeout(int sockfd,long timeoutms);
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/**
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* Set the socket receive timeout, in miliseconds
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* @param fd file descriptor
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* @return 0 on success -1 on failure
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*/
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int uc_set_receive_timeout(int sockfd,long timeoutms);
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/*
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* Set the IP DSCP (differnetiated services code point) header value
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* The dscp must be < 64
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* @param fd file descriptor
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* @return 0 on success -1 on failure
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*/
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int uc_set_ip_dscp(int fd, unsigned int dscp);
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#ifdef __cplusplus
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};
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#endif
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#endif /* FD_UTILS_H_ */
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