void udpc_initFifo(struct fifo *fifo, int blockSize)
{
fifo->dataBufSize = blockSize * 4096;
fifo->dataBuffer = xmalloc(fifo->dataBufSize+4096);
fifo->dataBuffer += 4096 - (((unsigned long)fifo->dataBuffer) % 4096);
/* Free memory queue is initially full */
fifo->freeMemQueue = pc_makeProduconsum(fifo->dataBufSize, "free mem");
pc_produce(fifo->freeMemQueue, fifo->dataBufSize);
fifo->data = pc_makeProduconsum(fifo->dataBufSize, "receive");
}
static void initReturnChannel(struct returnChannel *returnChannel,
struct net_config *config,
int sock) {
returnChannel->config = config;
returnChannel->rcvSock = sock;
returnChannel->freeSpace = pc_makeProduconsum(QUEUE_SIZE,"msg:free-queue");
pc_produce(returnChannel->freeSpace, QUEUE_SIZE);
returnChannel->incoming = pc_makeProduconsum(QUEUE_SIZE,"msg:incoming");
pthread_create(&returnChannel->thread, NULL,
returnChannelMain, returnChannel);
}
int spawnNetSender(struct fifo *fifo,
int sock,
struct net_config *config,
participantsDb_t db,
sender_stats_t stats)
{
int i;
sender_state_t sendst = MALLOC(struct senderState);
sendst->fifo = fifo;
sendst->socket = sock;
sendst->config = config;
sendst->stats = stats;
#ifdef BB_FEATURE_UDPCAST_FEC
if(sendst->config->flags & FLAG_FEC)
sendst->fec_data = xmalloc(NR_SLICES *
config->fec_stripes *
config->fec_redundancy *
config->blockSize);
#endif
sendst->rc.participantsDb = db;
initReturnChannel(&sendst->rc, sendst->config, sendst->socket);
sendst->free_slices_pc = pc_makeProduconsum(NR_SLICES, "free slices");
pc_produce(sendst->free_slices_pc, NR_SLICES);
for(i = 0; i <NR_SLICES; i++)
sendst->slices[i].state = SLICE_FREE;
#ifdef BB_FEATURE_UDPCAST_FEC
if(sendst->config->flags & FLAG_FEC) {
/* Free memory queue is initially full */
fec_init();
sendst->fec_data_pc = pc_makeProduconsum(NR_SLICES, "fec data");
pthread_create(&sendst->fec_thread, NULL, fecMain, sendst);
}
#endif
pthread_create(&fifo->thread, NULL, netSenderMain, sendst);
return 0;
}
int startReceiver(int doWarn,
struct disk_config *disk_config,
struct net_config *net_config,
struct stat_config *stat_config,
const char *ifName)
{
char ipBuffer[16];
union serverControlMsg Msg;
int connectReqSent=0;
struct client_config client_config;
int outFile=1;
int pipedOutFile;
struct sockaddr_in myIp;
int pipePid = 0;
int origOutFile;
int haveServerAddress;
client_config.sender_is_newgen = 0;
net_config->net_if = getNetIf(ifName);
zeroSockArray(client_config.socks, NR_CLIENT_SOCKS);
client_config.S_UCAST = makeSocket(ADDR_TYPE_UCAST,
net_config->net_if,
0, RECEIVER_PORT(net_config->portBase));
client_config.S_BCAST = makeSocket(ADDR_TYPE_BCAST,
net_config->net_if,
0, RECEIVER_PORT(net_config->portBase));
if(net_config->ttl == 1 && net_config->mcastRdv == NULL) {
getBroadCastAddress(net_config->net_if,
&net_config->controlMcastAddr,
SENDER_PORT(net_config->portBase));
setSocketToBroadcast(client_config.S_UCAST);
} else {
getMcastAllAddress(&net_config->controlMcastAddr,
net_config->mcastRdv,
SENDER_PORT(net_config->portBase));
if(isMcastAddress(&net_config->controlMcastAddr)) {
setMcastDestination(client_config.S_UCAST, net_config->net_if,
&net_config->controlMcastAddr);
setTtl(client_config.S_UCAST, net_config->ttl);
client_config.S_MCAST_CTRL =
makeSocket(ADDR_TYPE_MCAST,
net_config->net_if,
&net_config->controlMcastAddr,
RECEIVER_PORT(net_config->portBase));
// TODO: subscribe address as receiver to!
}
}
clearIp(&net_config->dataMcastAddr);
udpc_flprintf("%sUDP receiver for %s at ",
disk_config->pipeName == NULL ? "" : "Compressed ",
disk_config->fileName == NULL ? "(stdout)":disk_config->fileName);
printMyIp(net_config->net_if);
udpc_flprintf(" on %s\n", net_config->net_if->name);
connectReqSent = 0;
haveServerAddress = 0;
client_config.clientNumber= 0; /*default number for asynchronous transfer*/
while(1) {
// int len;
int msglen;
int sock;
if (!connectReqSent) {
if (sendConnectReq(&client_config, net_config,
haveServerAddress) < 0) {
perror("sendto to locate server");
}
connectReqSent = 1;
}
haveServerAddress=0;
sock = udpc_selectSock(client_config.socks, NR_CLIENT_SOCKS,
net_config->startTimeout);
if(sock < 0) {
return -1;
}
// len = sizeof(server);
msglen=RECV(sock,
Msg, client_config.serverAddr, net_config->portBase);
if (msglen < 0) {
perror("recvfrom to locate server");
exit(1);
}
if(getPort(&client_config.serverAddr) !=
SENDER_PORT(net_config->portBase))
/* not from the right port */
continue;
switch(ntohs(Msg.opCode)) {
case CMD_CONNECT_REPLY:
client_config.clientNumber = ntohl(Msg.connectReply.clNr);
net_config->blockSize = ntohl(Msg.connectReply.blockSize);
udpc_flprintf("received message, cap=%08lx\n",
(long) ntohl(Msg.connectReply.capabilities));
if(ntohl(Msg.connectReply.capabilities) & CAP_NEW_GEN) {
client_config.sender_is_newgen = 1;
copyFromMessage(&net_config->dataMcastAddr,
Msg.connectReply.mcastAddr);
}
if (client_config.clientNumber == -1) {
udpc_fatal(1, "Too many clients already connected\n");
}
goto break_loop;
case CMD_HELLO_STREAMING:
case CMD_HELLO_NEW:
case CMD_HELLO:
connectReqSent = 0;
if(ntohs(Msg.opCode) == CMD_HELLO_STREAMING)
net_config->flags |= FLAG_STREAMING;
if(ntohl(Msg.hello.capabilities) & CAP_NEW_GEN) {
client_config.sender_is_newgen = 1;
copyFromMessage(&net_config->dataMcastAddr,
Msg.hello.mcastAddr);
net_config->blockSize = ntohs(Msg.hello.blockSize);
if(ntohl(Msg.hello.capabilities) & CAP_ASYNC)
net_config->flags |= FLAG_PASSIVE;
if(net_config->flags & FLAG_PASSIVE)
goto break_loop;
}
haveServerAddress=1;
continue;
case CMD_CONNECT_REQ:
case CMD_DATA:
case CMD_FEC:
continue;
default:
break;
}
udpc_fatal(1,
"Bad server reply %04x. Other transfer in progress?\n",
(unsigned short) ntohs(Msg.opCode));
}
break_loop:
udpc_flprintf("Connected as #%d to %s\n",
client_config.clientNumber,
getIpString(&client_config.serverAddr, ipBuffer));
getMyAddress(net_config->net_if, &myIp);
if(!ipIsZero(&net_config->dataMcastAddr) &&
!ipIsEqual(&net_config->dataMcastAddr, &myIp) &&
(ipIsZero(&net_config->controlMcastAddr) ||
!ipIsEqual(&net_config->dataMcastAddr, &net_config->controlMcastAddr)
)) {
udpc_flprintf("Listening to multicast on %s\n",
getIpString(&net_config->dataMcastAddr, ipBuffer));
client_config.S_MCAST_DATA =
makeSocket(ADDR_TYPE_MCAST, net_config->net_if,
&net_config->dataMcastAddr,
RECEIVER_PORT(net_config->portBase));
}
if(net_config->requestedBufSize) {
int i;
for(i=0; i<NR_CLIENT_SOCKS; i++)
if(client_config.socks[i] != -1)
setRcvBuf(client_config.socks[i],net_config->requestedBufSize);
}
outFile=openOutFile(disk_config);
origOutFile = outFile;
pipedOutFile = openPipe(outFile, disk_config, &pipePid);
global_client_config= &client_config;
atexit(sendDisconnectWrapper);
{
struct fifo fifo;
int printUncompressedPos =
udpc_shouldPrintUncompressedPos(stat_config->printUncompressedPos,
origOutFile, pipedOutFile);
receiver_stats_t stats = allocReadStats(origOutFile,
stat_config->statPeriod,
printUncompressedPos);
udpc_initFifo(&fifo, net_config->blockSize);
fifo.data = pc_makeProduconsum(fifo.dataBufSize, "receive");
client_config.isStarted = 0;
if((net_config->flags & (FLAG_PASSIVE|FLAG_NOKBD))) {
/* No console used */
client_config.console = NULL;
} else {
if(doWarn)
udpc_flprintf("WARNING: This will overwrite the hard disk of this machine\n");
client_config.console = prepareConsole(0);
atexit(fixConsole);
}
spawnNetReceiver(&fifo,&client_config, net_config, stats);
writer(&fifo, pipedOutFile);
if(pipePid) {
close(pipedOutFile);
}
pthread_join(client_config.thread, NULL);
/* if we have a pipe, now wait for that too */
if(pipePid) {
udpc_waitForProcess(pipePid, "Pipe");
}
#ifndef __MINGW32__
fsync(origOutFile);
#endif /* __MINGW32__ */
displayReceiverStats(stats, 1);
}
fixConsole();
sendDisconnectWrapper();
global_client_config= NULL;
return 0;
}
