dany/luasocket
1
0
Fork 0
mirror of https://github.com/lunarmodules/luasocket.git synced 2024-06-26 16:49:47 +02:00
Code Issues Packages Projects Releases Wiki Activity

Receive of zero for UDP is now possible.

Browse Source 
Previously, receive of zero was considered to be "closed", but that
is only true for stream-based protocols, like TCP.
This commit is contained in:
Sam Roberts 2011-08-08 16:11:47 -07:00
parent c37f71d062
commit 21698c7665
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/udp.c
View File

@ -170,6 +170,9 @@ static int meth_receive(lua_State *L) {
count = MIN(count, sizeof(buffer));
timeout_markstart(tm);
err = socket_recv(&udp->sock, buffer, count, &got, tm);
/* Unlike TCP, recv() of zero is not closed, but a zero-length packet. */
if (err == IO_CLOSED)
err = IO_DONE;
if (err != IO_DONE) {
lua_pushnil(L);
lua_pushstring(L, udp_strerror(err));
@ -194,6 +197,9 @@ static int meth_receivefrom(lua_State *L) {
count = MIN(count, sizeof(buffer));
err = socket_recvfrom(&udp->sock, buffer, count, &got,
(SA *) &addr, &addr_len, tm);
/* Unlike TCP, recv() of zero is not closed, but a zero-length packet. */
if (err == IO_CLOSED)
err = IO_DONE;
if (err == IO_DONE) {
lua_pushlstring(L, buffer, got);
lua_pushstring(L, inet_ntoa(addr.sin_addr));