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fast-ping: force send RST after ping finish.

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This commit is contained in:
Nick Peng
2020-04-19 09:43:47 +08:00
parent 3985ea8269
commit 304e94bc6f
3 changed files with 21 additions and 0 deletions
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5
src/fast_ping.c
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@@ -573,6 +573,11 @@ static int _fast_ping_sendping_tcp(struct ping_host_struct *ping_host)
setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &yes, sizeof(yes)); setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &yes, sizeof(yes));
setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority)); setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority));
setsockopt(fd, IPPROTO_IP, IP_TOS, &ip_tos, sizeof(ip_tos)); setsockopt(fd, IPPROTO_IP, IP_TOS, &ip_tos, sizeof(ip_tos));
set_sock_keepalive(fd, 0, 0, 0);
/* Set the socket lingering so we will RST connections instead of wasting
* bandwidth with the four-step close
*/
set_sock_lingertime(fd, 0);
ping_host->seq++; ping_host->seq++;
if (connect(fd, (struct sockaddr *)&ping_host->addr, ping_host->addr_len) != 0) { if (connect(fd, (struct sockaddr *)&ping_host->addr, ping_host->addr_len) != 0) {

14
src/util.c
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@@ -971,3 +971,17 @@ int set_sock_keepalive(int fd, int keepidle, int keepinterval, int keepcnt)
return 0; return 0;
} }
int set_sock_lingertime(int fd, int time)
{
struct linger l;
l.l_onoff = 1;
l.l_linger = 0;
if (setsockopt(fd, SOL_SOCKET, SO_LINGER, (const char *)&l, sizeof(l)) != 0) {
return -1;
}
return 0;
}

2
src/util.h
View File

@@ -102,6 +102,8 @@ int has_network_raw_cap(void);
int set_sock_keepalive(int fd, int keepidle, int keepinterval, int keepcnt); int set_sock_keepalive(int fd, int keepidle, int keepinterval, int keepcnt);
int set_sock_lingertime(int fd, int time);
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif /*__cplusplus */ #endif /*__cplusplus */