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feat: auto-drop KCP packets on readbuf overflow #792

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feat: auto-drop KCP packets on readbuf overflow #792

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5 changes: 5 additions & 0 deletions event/kcp/hkcp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -141,6 +141,11 @@ int hio_read_kcp (hio_t* io, void* buf, int readbytes) {
while (1) {
int nrecv = ikcp_recv(kcp->ikcp, kcp->readbuf.base, kcp->readbuf.len);
// printf("ikcp_recv nrecv=%d\n", nrecv);
if (nrecv == -3) { // drop packet when larger than readbuf.len
int peeksize = ikcp_peeksize(kcp->ikcp);
ikcp_recv(kcp->ikcp, NULL, peeksize);
nrecv = 0;
}
if (nrecv < 0) break;
hio_read_cb(io, kcp->readbuf.base, nrecv);
ret += nrecv;
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