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Use non-blocking sockets for UDP

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This commit is contained in:
Vladimir Dubrovin 2026-06-02 13:43:56 +03:00
parent ab11e6c4a3
commit fd7b25bf06
3 changed files with 14 additions and 2 deletions
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4
src/dnspr.c
View File

@ -147,9 +147,9 @@ void * dnsprchild(struct clientparam* param) {
}
else {
#ifdef _WIN32
/* ioctlsocket(param->remsock, FIONBIO, &ul); */
ioctlsocket(param->remsock, FIONBIO, &ul);
#else
/* fcntl(param->remsock,F_SETFL,O_NONBLOCK); */
fcntl(param->remsock, F_SETFL, O_NONBLOCK | fcntl(param->remsock, F_GETFL));
#endif
}

10
src/socks.c
View File

@ -255,6 +255,11 @@ void * sockschild(struct clientparam* param) {
if(switch_ns(param->srv, param->srv->o_nsfd)) {RETURN(11);}
#endif
if ((param->remsock=param->srv->so._socket(param->sostate, SASOCK(&param->req), SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET) {RETURN (11);}
#ifdef _WIN32
{ unsigned long ul = 1; ioctlsocket(param->remsock, FIONBIO, &ul); }
#else
fcntl(param->remsock, F_SETFL, O_NONBLOCK | fcntl(param->remsock, F_GETFL));
#endif
}
if(command > 1) {
@ -275,6 +280,11 @@ fflush(stderr);
#endif
param->clisock = param->srv->so._socket(param->sostate, SASOCK(&param->sincr), SOCK_DGRAM, IPPROTO_UDP);
if(param->clisock == INVALID_SOCKET) {RETURN(11);}
#ifdef _WIN32
{ unsigned long ul = 1; ioctlsocket(param->clisock, FIONBIO, &ul); }
#else
fcntl(param->clisock, F_SETFL, O_NONBLOCK | fcntl(param->clisock, F_GETFL));
#endif
sin = param->sincl;
*SAPORT(&sin) = 0;
if(param->srv->so._bind(param->sostate, param->clisock,(struct sockaddr *)&sin,SASIZE(&sin))) {RETURN (12);}

2
src/udpsockmap.c
View File

@ -106,6 +106,7 @@ int udpsockmap(struct clientparam *param, int timeo)
len = param->srv->so._recvfrom(param->sostate, param->clisock,
(char *)param->srvbuf + recvoff, UDPBUFSIZE - recvoff,
0, (struct sockaddr *)&sin, &sasize);
if (len < 0 && (errno == EAGAIN || errno == EINTR)) continue;
if (len <= 0) return 482;
if (SAADDRLEN(&sin) != SAADDRLEN(&param->sincr) ||
@ -182,6 +183,7 @@ int udpsockmap(struct clientparam *param, int timeo)
len = param->srv->so._recvfrom(param->sostate, param->remsock,
(char *)param->srvbuf + hdrsize, UDPBUFSIZE - hdrsize, 0,
(struct sockaddr *)&from, &sasize);
if (len < 0 && (errno == EAGAIN || errno == EINTR)) continue;
if (len <= 0) return 486;
if (nhops >= 1) {
if (!SAISNULL(&param->sinsr) && *SAPORT(&param->sinsr)) {