Function meth_setpeername

Plugins/UnLuaExtensions/LuaSocket/Source/src/udp.cpp:390–419

-------------------------------------------------------------------------*\ * Turns a master udp object into a client object. \*-------------------------------------------------------------------------*/

* Turns a master udp object into a client object.
\*-------------------------------------------------------------------------*/
static int meth_setpeername(lua_State *L) {
    p_udp udp = (p_udp) auxiliar_checkgroup(L, "udp{any}", 1);
    p_timeout tm = &udp->tm;
    const char *address = luaL_checkstring(L, 2);
    int connecting = strcmp(address, "*");
    const char *port = connecting? luaL_checkstring(L, 3): "0";
    struct addrinfo connecthints;
    const char *err;
    memset(&connecthints, 0, sizeof(connecthints));
    connecthints.ai_socktype = SOCK_DGRAM;
    /* make sure we try to connect only to the same family */
    connecthints.ai_family = udp->family;
    if (connecting) {
        err = inet_tryconnect(&udp->sock, &udp->family, address,
            port, tm, &connecthints);
        if (err) {
            lua_pushnil(L);
            lua_pushstring(L, err);
            return 2;
        }
        auxiliar_setclass(L, "udp{connected}", 1);
    } else {
        /* we ignore possible errors because Mac OS X always
         * returns EAFNOSUPPORT */
        inet_trydisconnect(&udp->sock, udp->family, tm);
        auxiliar_setclass(L, "udp{unconnected}", 1);
    }
    lua_pushnumber(L, 1);
    return 1;
}

/*-------------------------------------------------------------------------*\
* Closes socket used by object