/******************************************************************************
* Copyright © 2014-2017 The SuperNET Developers. *
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* See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at *
* the top-level directory of this distribution for the individual copyright *
* holder information and the developer policies on copyright and licensing. *
* *
* Unless otherwise agreed in a custom licensing agreement, no part of the *
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* Removal or modification of this copyright notice is prohibited. *
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******************************************************************************/
//
// LP_network.c
// marketmaker
//
struct psock
{
uint32_t lasttime,lastping,errors;
int32_t publicsock,sendsock,ispaired;
uint16_t publicport,sendport;
char sendaddr[128],publicaddr[128];
} *PSOCKS;
uint16_t Numpsocks,Psockport = MIN_PSOCK_PORT;
char *nanomsg_transportname(int32_t bindflag,char *str,char *ipaddr,uint16_t port)
{
sprintf(str,"tcp://%s:%u",bindflag == 0 ? ipaddr : "*",port);
return(str);
}
int32_t LP_send(int32_t sock,void *msg,int32_t sendlen,int32_t freeflag)
{
int32_t sentbytes,i; struct nn_pollfd pfd;
if ( sock < 0 )
{
printf("LP_send.(%s) to illegal socket\n",(char *)msg);
if ( freeflag != 0 )
free(msg);
return(-1);
}
//len = (int32_t)strlen(msg) + 1;
for (i=0; i<1000; i++) // 1000 * (1 ms + 1000 us) = 2 seconds
{
pfd.fd = sock;
pfd.events = NN_POLLOUT;
//portable_mutex_lock(&LP_networkmutex);
if ( nn_poll(&pfd,1,1) > 0 )
{
if ( (sentbytes= nn_send(sock,msg,sendlen,0)) != sendlen )
printf("LP_send sent %d instead of %d\n",sentbytes,sendlen);
//else printf("SENT.(%s)\n",msg);
if ( freeflag != 0 )
free(msg);
//portable_mutex_unlock(&LP_networkmutex);
return(sentbytes);
}
//portable_mutex_unlock(&LP_networkmutex);
usleep(1000);
}
printf("error LP_send sock.%d, i.%d timeout.(%s) %s\n",sock,i,(char *)msg,nn_strerror(nn_errno()));
if ( freeflag != 0 )
free(msg);
return(-1);
}
uint32_t LP_swapsend(int32_t pairsock,struct basilisk_swap *swap,uint32_t msgbits,uint8_t *data,int32_t datalen,uint32_t nextbits,uint32_t crcs[2])
{
uint8_t *buf; int32_t sentbytes,offset=0,i;
buf = malloc(datalen + sizeof(msgbits) + sizeof(swap->I.req.quoteid) + sizeof(bits256)*2);
for (i=0; i<32; i++)
buf[offset++] = swap->I.myhash.bytes[i];
for (i=0; i<32; i++)
buf[offset++] = swap->I.otherhash.bytes[i];
offset += iguana_rwnum(1,&buf[offset],sizeof(swap->I.req.quoteid),&swap->I.req.quoteid);
offset += iguana_rwnum(1,&buf[offset],sizeof(msgbits),&msgbits);
if ( datalen > 0 )
memcpy(&buf[offset],data,datalen), offset += datalen;
if ( (sentbytes= nn_send(pairsock,buf,offset,0)) != offset )
{
printf("sentbytes.%d vs offset.%d\n",sentbytes,offset);
if ( sentbytes < 0 )
{
}
}
//printf("sent %d bytes\n",sentbytes);
//else printf("send.[%d] %x offset.%d datalen.%d [%llx]\n",sentbytes,msgbits,offset,datalen,*(long long *)data);
free(buf);
return(nextbits);
}
void LP_psockloop(void *_ptr)
{
static struct nn_pollfd *pfds;
int32_t i,n,nonz,iter,retval,size=0,sentbytes,sendsock = -1; uint32_t now; struct psock *ptr=0; void *buf=0; char keepalive[512];//,*myipaddr = _ptr;
while ( 1 )
{
now = (uint32_t)time(NULL);
if ( buf != 0 && ptr != 0 && sendsock >= 0 )
{
if ( size > 0 )
{
if ( (sentbytes= LP_send(sendsock,buf,size,0)) > 0 )
{
//printf("PSOCKS (%d %d %d) (%s) -> %d/%d bytes %s\n",ptr->publicsock,ptr->sendsock,sendsock,(char *)buf,size,sentbytes,ptr->sendaddr);
}
else
{
ptr->errors++;
printf("send error.%d to %s\n",ptr->errors,ptr->sendaddr);
}
if ( buf != 0 )
{
if ( buf != keepalive )
nn_freemsg(buf);
buf = 0;
size = 0;
ptr = 0;
sendsock = -1;
}
}
}
else if ( Numpsocks > 0 )
{
if ( pfds == 0 )
pfds = calloc(MAX_PSOCK_PORT,sizeof(*pfds));
portable_mutex_lock(&LP_psockmutex);
memset(pfds,0,sizeof(*pfds) * ((Numpsocks*2 <= MAX_PSOCK_PORT) ? Numpsocks*2 : MAX_PSOCK_PORT));
for (iter=0; iter<2; iter++)
{
for (i=n=0; i<Numpsocks; i++)
{
ptr = &PSOCKS[i];
if ( iter == 0 )
{
pfds[n].fd = ptr->publicsock;
pfds[n].events = POLLIN;
}
else
{
if ( pfds[n].fd != ptr->publicsock )
{
printf("unexpected fd.%d mismatched publicsock.%d\n",pfds[n].fd,ptr->publicsock);
break;
}
else if ( (pfds[n].revents & POLLIN) != 0 )
{
//printf("publicsock.%d %s has pollin\n",ptr->publicsock,ptr->publicaddr);
if ( (size= nn_recv(ptr->publicsock,&buf,NN_MSG,0)) > 0 )
{
ptr->lasttime = now;
sendsock = ptr->sendsock;
break;
}
}
}
n++;
if ( iter == 0 )
{
pfds[n].fd = ptr->sendsock;
pfds[n].events = POLLIN;
}
else
{
if ( pfds[n].fd != ptr->sendsock )
{
printf("unexpected fd.%d mismatched sendsock.%d\n",pfds[n].fd,ptr->sendsock);
break;
}
else if ( (pfds[n].revents & POLLIN) != 0 )
{
if ( (size= nn_recv(ptr->sendsock,&buf,NN_MSG,0)) > 0 )
{
//printf("%s paired has pollin (%s)\n",ptr->sendaddr,(char *)buf);
ptr->lasttime = now;
if ( ptr->ispaired != 0 )
{
sendsock = ptr->publicsock;
break;
}
else
{
nn_freemsg(buf);
buf = 0;
size = 0;
}
}
}
}
n++;
}
if ( iter == 0 )
{
if ( (retval= nn_poll(pfds,n,1)) <= 0 )
{
if ( retval != 0 )
printf("nn_poll retval.%d\n",retval);
break;
} // else printf("num pfds.%d retval.%d\n",n,retval);
}
}
//free(pfds);
//printf("sendsock.%d Numpsocks.%d\n",sendsock,Numpsocks);
if ( sendsock < 0 )
{
for (i=nonz=0; i<Numpsocks; i++)
{
if ( i < Numpsocks )
{
ptr = &PSOCKS[i];
if ( now > ptr->lasttime+PSOCK_KEEPALIVE )
{
printf("PSOCKS[%d] of %d (%u %u) lag.%d IDLETIMEOUT\n",i,Numpsocks,ptr->publicport,ptr->sendport,now - ptr->lasttime);
if ( ptr->publicsock >= 0 )
nn_close(ptr->publicsock);
if ( ptr->sendsock >= 0 )
nn_close(ptr->sendsock);
//portable_mutex_lock(&LP_psockmutex);
if ( Numpsocks > 1 )
{
PSOCKS[i] = PSOCKS[--Numpsocks];
memset(&PSOCKS[Numpsocks],0,sizeof(*ptr));
} else Numpsocks = 0;
//portable_mutex_unlock(&LP_psockmutex);
break;
}
else if ( now > ptr->lastping+PSOCK_KEEPALIVE/2 && ptr->errors < 3 )
{
ptr->lastping = now;
sendsock = ptr->sendsock;
sprintf(keepalive,"{\"method\":\"keepalive\",\"endpoint\":\"%s\"}",ptr->sendaddr);
size = (int32_t)strlen(keepalive) + 1;
buf = keepalive;
printf("send keepalive.(%s)\n",keepalive);
break;
}
}
}
if ( nonz == 0 && i == Numpsocks )
usleep(100000);
}
portable_mutex_unlock(&LP_psockmutex);
} else usleep(100000);
}
}
void LP_psockadd(int32_t ispaired,int32_t publicsock,uint16_t recvport,int32_t sendsock,uint16_t sendport,char *subaddr,char *publicaddr)
{
struct psock *ptr;
portable_mutex_lock(&LP_psockmutex);
PSOCKS = realloc(PSOCKS,sizeof(*PSOCKS) * (Numpsocks + 1));
ptr = &PSOCKS[Numpsocks++];
ptr->ispaired = ispaired;
ptr->publicsock = publicsock;
ptr->publicport = recvport;
ptr->sendsock = sendsock;
ptr->sendport = sendport;
safecopy(ptr->sendaddr,subaddr,sizeof(ptr->sendaddr));
safecopy(ptr->publicaddr,publicaddr,sizeof(ptr->publicaddr));
ptr->lasttime = (uint32_t)time(NULL);
portable_mutex_unlock(&LP_psockmutex);
}
int32_t LP_psockmark(char *publicaddr)
{
int32_t i,retval = -1; struct psock *ptr;
portable_mutex_lock(&LP_psockmutex);
for (i=0; i<Numpsocks; i++)
{
ptr = &PSOCKS[i];
if ( strcmp(publicaddr,ptr->publicaddr) == 0 )
{
printf("mark PSOCKS[%d] %s for deletion\n",i,publicaddr);
ptr->lasttime = 0;
retval = i;
break;
}
}
portable_mutex_unlock(&LP_psockmutex);
return(retval);
}
char *LP_psock(char *myipaddr,int32_t ispaired)
{
char pushaddr[128],subaddr[128]; uint16_t i,publicport,subport,maxiters=100; int32_t timeout,maxsize,pullsock=-1,pubsock=-1; cJSON *retjson=0;
retjson = cJSON_CreateObject();
publicport = Psockport++;
subport = Psockport++;
for (i=0; i<maxiters; i++,publicport+=2,subport+=2)
{
if ( publicport < MIN_PSOCK_PORT )
publicport = MIN_PSOCK_PORT+1;
if ( subport <= publicport )
subport = publicport + 1;
pullsock = pubsock = -1;
nanomsg_transportname(1,pushaddr,myipaddr,publicport);
nanomsg_transportname(1,subaddr,myipaddr,subport);
if ( (pullsock= nn_socket(AF_SP,ispaired!=0?NN_PAIR:NN_PULL)) >= 0 && (pubsock= nn_socket(AF_SP,ispaired!=0?NN_PAIR:NN_PAIR)) >= 0 )
{
if ( nn_bind(pullsock,pushaddr) >= 0 && nn_bind(pubsock,subaddr) >= 0 )
{
timeout = 1;
nn_setsockopt(pubsock,NN_SOL_SOCKET,NN_SNDTIMEO,&timeout,sizeof(timeout));
timeout = 1;
nn_setsockopt(pullsock,NN_SOL_SOCKET,NN_RCVTIMEO,&timeout,sizeof(timeout));
if ( ispaired != 0 )
{
maxsize = 1024 * 1024;
nn_setsockopt(pullsock,NN_SOL_SOCKET,NN_RCVBUF,&maxsize,sizeof(maxsize));
}
//if ( ispaired != 0 )
{
nn_setsockopt(pullsock,NN_SOL_SOCKET,NN_SNDTIMEO,&timeout,sizeof(timeout));
nn_setsockopt(pubsock,NN_SOL_SOCKET,NN_RCVTIMEO,&timeout,sizeof(timeout));
}
nanomsg_transportname(0,pushaddr,myipaddr,publicport);
nanomsg_transportname(0,subaddr,myipaddr,subport);
LP_psockadd(ispaired,pullsock,publicport,pubsock,subport,subaddr,pushaddr);
jaddstr(retjson,"result","success");
jaddstr(retjson,"LPipaddr",myipaddr);
jaddstr(retjson,"connectaddr",subaddr);
jaddnum(retjson,"connectport",subport);
jaddnum(retjson,"ispaired",ispaired);
jaddstr(retjson,"publicaddr",pushaddr);
jaddnum(retjson,"publicport",publicport);
printf("i.%d publicaddr.(%s) for subaddr.(%s), pullsock.%d pubsock.%d\n",i,pushaddr,subaddr,pullsock,pubsock);
break;
} else printf("bind error on %s or %s\n",pushaddr,subaddr);
if ( pullsock >= 0 )
nn_close(pullsock);
if ( pubsock >= 0 )
nn_close(pubsock);
}
}
if ( Psockport > MAX_PSOCK_PORT )
Psockport = MIN_PSOCK_PORT;
if ( i == maxiters )
jaddstr(retjson,"error","cant find psock ports");
return(jprint(retjson,1));
}
/*
LP_pushaddr_get makes transparent the fact that most nodes cannot bind()!
The idea is to create an LP node NN_PAIR sock that the LP node binds to and client node connects to. Additionally, the LP node creates an NN_PULL that other nodes can NN_PUSH to and returns this address in pushaddr/retval for the client node to register with. The desired result is that other than the initial LP node, all the other nodes do a normal NN_PUSH, requiring no change to the NN_PUSH/NN_PULL logic. Of course, the initial LP node needs to autoforward all packets from the public NN_PULL to the NN_PUB
similar to LP_pushaddr_get, create an NN_PAIR for DEX atomic data, can be assumed to have a max lifetime of 2*INSTANTDEX_LOCKTIME
both are combined in LP_psock_get
*/
int32_t nn_tests(void *ctx,int32_t pullsock,char *pushaddr,int32_t nnother)
{
int32_t sock,n,m,timeout,retval = -1; char msg[512],*retstr;
printf("nn_tests.(%s)\n",pushaddr);
if ( (sock= nn_socket(AF_SP,nnother)) >= 0 )
{
if ( nn_connect(sock,pushaddr) < 0 )
printf("connect error %s\n",nn_strerror(nn_errno()));
else
{
sleep(3);
timeout = 1;
nn_setsockopt(sock,NN_SOL_SOCKET,NN_SNDTIMEO,&timeout,sizeof(timeout));
sprintf(msg,"{\"method\":\"nn_tests\",\"ipaddr\":\"%s\"}",pushaddr);
n = LP_send(sock,msg,(int32_t)strlen(msg)+1,0);
sleep(3);
LP_pullsock_check(ctx,&retstr,"127.0.0.1",-1,pullsock,0.);
sprintf(msg,"{\"method\":\"nn_tests2\",\"ipaddr\":\"%s\"}",pushaddr);
m = LP_send(pullsock,msg,(int32_t)strlen(msg)+1,0);
printf(">>>>>>>>>>>>>>>>>>>>>> sent %d+%d bytes -> pullsock.%d retstr.(%s)\n",n,m,pullsock,retstr!=0?retstr:"");
if ( retstr != 0 )
{
free(retstr);
retval = 0;
}
}
nn_close(sock);
}
return(retval);
}
int32_t LP_initpublicaddr(void *ctx,uint16_t *mypullportp,char *publicaddr,char *myipaddr,uint16_t mypullport,int32_t ispaired)
{
int32_t nntype,pullsock,timeout; char bindaddr[128],connectaddr[128];
*mypullportp = mypullport;
if ( ispaired == 0 )
{
if ( LP_canbind != 0 )
nntype = LP_COMMAND_RECVSOCK;
else nntype = NN_PAIR;//NN_SUB;
} else nntype = NN_PAIR;
if ( LP_canbind != 0 )
{
nanomsg_transportname(0,publicaddr,myipaddr,mypullport);
nanomsg_transportname(1,bindaddr,myipaddr,mypullport);
}
else
{
*mypullportp = 0;
while ( *mypullportp == 0 )
{
if ( (*mypullportp= LP_psock_get(connectaddr,publicaddr,ispaired)) != 0 )
break;
sleep(10);
printf("try to get publicaddr again\n");
}
}
while ( 1 )
{
if ( (pullsock= nn_socket(AF_SP,nntype)) >= 0 )
{
if ( LP_canbind == 0 )
{
if ( nn_connect(pullsock,connectaddr) < 0 )
{
printf("bind to %s error for %s: %s\n",connectaddr,publicaddr,nn_strerror(nn_errno()));
exit(-1);
} else printf("nntype.%d NN_PAIR.%d connect to %s connectsock.%d\n",nntype,NN_PAIR,connectaddr,pullsock);
}
else
{
if ( nn_bind(pullsock,bindaddr) < 0 )
{
printf("bind to %s error for %s: %s\n",bindaddr,publicaddr,nn_strerror(nn_errno()));
exit(-1);
}
}
timeout = 1;
nn_setsockopt(pullsock,NN_SOL_SOCKET,NN_RCVTIMEO,&timeout,sizeof(timeout));
timeout = 1;
nn_setsockopt(pullsock,NN_SOL_SOCKET,NN_SNDTIMEO,&timeout,sizeof(timeout));
//maxsize = 2 * 1024 * 1024;
//nn_setsockopt(pullsock,NN_SOL_SOCKET,NN_RCVBUF,&maxsize,sizeof(maxsize));
if ( nntype == NN_SUB )
nn_setsockopt(pullsock,NN_SUB,NN_SUB_SUBSCRIBE,"",0);
}
if ( LP_canbind != 0 || ispaired != 0 || nn_tests(ctx,pullsock,publicaddr,NN_PUSH) >= 0 )
break;
printf("nn_tests failed, try again\n");
sleep(3);
if ( pullsock >= 0 )
nn_close(pullsock);
}
return(pullsock);
}