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#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
#define NNG_STATIC_LIB
#include <nng/nng.h>
#include <nng/transport/inproc/inproc.h>
#include <nng/transport/ipc/ipc.h>
#include <nng/transport/tcp/tcp.h>
#include <nng/transport/tls/tls.h>
#include <nng/transport/zerotier/zerotier.h>
#include <nng/protocol/pair1/pair.h>
#include <nng/protocol/bus0/bus.h>
#include <nng/protocol/pubsub0/pub.h>
#include <nng/protocol/pubsub0/sub.h>
#include <nng/protocol/pipeline0/pull.h>
#include <nng/protocol/pipeline0/push.h>
#include <nng/protocol/reqrep0/req.h>
#include <nng/protocol/reqrep0/rep.h>
#include <nng/protocol/survey0/respond.h>
#include <nng/protocol/survey0/survey.h>
#define OPEN(name)\
int lnng_ ## name ## _open(lua_State *L){\
nng_socket *s = (nng_socket*)lua_newuserdata(L,sizeof(nng_socket));\
int err = nng_ ## name ## _open(s);\
if(err == 0){\
luaL_setmetatable(L,"nng.socket");\
return 1;\
}else{\
lua_pushboolean(L,0);\
lua_pushstring(L,nng_strerror(err));\
return 2;\
}\
}
OPEN(bus0);
OPEN(pair1);
OPEN(pub0);
OPEN(sub0);
OPEN(pull0);
OPEN(push0);
OPEN(req0);
OPEN(rep0);
OPEN(surveyor0);
OPEN(respondent0);
nng_socket* tosocket(lua_State *L, int offset){
luaL_checkudata(L,offset,"nng.socket");
return (nng_socket*)lua_touserdata(L,offset);
}
//socket:listen(url[, flags]) :: listener
int lnng_listen(lua_State *L){
int argc = lua_gettop(L);
int flags = 0;
nng_socket *sock = tosocket(L,1);
const char *url = luaL_checkstring(L,2);
if(argc >= 3){
flags = luaL_checkinteger(L,3);
}
lua_pop(L,argc);
nng_listener *lp = (nng_listener*)lua_newuserdata(L,sizeof(nng_listener));
int err = nng_listen(*sock, url, lp, flags);
if(err == 0){
luaL_setmetatable(L,"nng.listener");
return 1;
}else{
lua_pushboolean(L,0);
lua_pushstring(L,nng_strerror(err));
return 2;
}
}
//socket:dial(url[, flags]) :: dialer
int lnng_dial(lua_State *L){
int argc = lua_gettop(L);
int flags = 0;
nng_socket *sock = tosocket(L,1);
const char *url = luaL_checkstring(L,2);
if(argc >= 3){
flags = luaL_checkinteger(L,3);
}
lua_pop(L,argc);
nng_dialer *dp = (nng_dialer*)lua_newuserdata(L,sizeof(nng_dialer));
int err = nng_dial(*sock, url, dp, flags);
if(err == 0){
luaL_setmetatable(L,"nng.dialer");
return 1;
}else{
lua_pushboolean(L,0);
lua_pushstring(L,nng_strerror(err));
return 2;
}
}
//socket:send("data"[, flags])
int lnng_send(lua_State *L){
int argc = lua_gettop(L);
int flags = 0;
nng_socket *sock = tosocket(L,1);
size_t datasize;
const char *data = luaL_checklstring(L,2,&datasize);
if(argc >= 3){
flags = luaL_checkinteger(L,3);
}
lua_pop(L,argc);
int err = nng_send(*sock, (void*)data, datasize, flags);
if(err == 0){
lua_pushboolean(L,1);
return 1;
}else{
lua_pushboolean(L,0);
lua_pushstring(L,nng_strerror(err));
return 2;
}
}
//socket:recv([flags])
int lnng_recv(lua_State *L){
int argc = lua_gettop(L);
int flags = NNG_FLAG_ALLOC; //don't support zero copy
nng_socket *sock = tosocket(L,1);
if(argc >= 2){
flags += luaL_checkinteger(L,2);
}
char *data = NULL;
size_t datasize;
int err = nng_recv(*sock, &data, &datasize, flags);
if(err == 0){
lua_pushlstring(L,data,datasize);
nng_free(data,datasize);
return 1;
}else{
lua_pushboolean(L,0);
lua_pushstring(L,nng_strerror(err));
return 2;
}
}
//socket:close()
int lnng_socket_close(lua_State *L){
nng_socket *sock = tosocket(L,1);
int err = nng_close(*sock);
lua_pop(L,1);
return 0;
}
//close(ud_dialer)
int lnng_dialer_close(lua_State *L){
nng_dialer *dp = (nng_dialer*)lua_touserdata(L,1);
nng_dialer_close(*dp);
lua_pop(L,1);
return 0;
}
//close(ud_listener)
int lnng_listener_close(lua_State *L){
nng_listener *lp = (nng_listener*)lua_touserdata(L,1);
int err = nng_listener_close(*lp);
lua_pop(L,1);
return 0;
}
static const struct luaL_Reg nng_dialer_m[] = {
{NULL, NULL}
};
static const struct luaL_Reg nng_listener_m[] = {
{NULL, NULL}
};
static const struct luaL_Reg nng_socket_m[] = {
{"dial", lnng_dial},
{"listen", lnng_listen},
{"send", lnng_send},
{"recv", lnng_recv},
{NULL, NULL}
};
static const struct luaL_Reg nng_f[] = {
{"bus0_open", lnng_bus0_open},
{"pair1_open", lnng_pair1_open},
{"pub0_open", lnng_pub0_open},
{"sub0_open", lnng_sub0_open},
{"pull0_open", lnng_pull0_open},
{"push0_open", lnng_push0_open},
{"req0_open", lnng_req0_open},
{"rep0_open", lnng_rep0_open},
{"surveyor0_open",lnng_surveyor0_open},
{"respondent0_open",lnng_respondent0_open},
{NULL, NULL}
};
#define flag(name) lua_pushnumber(L,name); lua_setfield(L,-2,#name);
int luaopen_nng(lua_State *L){
luaL_newmetatable(L,"nng.socket");
luaL_newlib(L,nng_socket_m);
lua_setfield(L,-2,"__index");
lua_pushcfunction(L,lnng_socket_close);
lua_setfield(L,-2,"__gc");
lua_pop(L,1);
luaL_newmetatable(L,"nng.dialer");
luaL_newlib(L,nng_dialer_m);
lua_setfield(L,-2,"__index");
lua_pushcfunction(L,lnng_dialer_close);
lua_setfield(L,-2,"__gc");
lua_pop(L,1);
luaL_newmetatable(L,"nng.listener");
luaL_newlib(L,nng_listener_m);
lua_setfield(L,-2,"__index");
lua_pushcfunction(L,lnng_listener_close);
lua_setfield(L,-2,"__gc");
lua_pop(L,1);
luaL_newlib(L,nng_f);
flag(NNG_FLAG_NONBLOCK);
flag(NNG_FLAG_ALLOC);
return 1;
}
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