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Network.cpp
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Network.cpp
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/*
* This file is part of the BSGS distribution (https://github.com/JeanLucPons/Kangaroo).
* Copyright (c) 2020 Jean Luc PONS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Kangaroo.h"
#include <fstream>
#include "SECPK1/IntGroup.h"
#include "Timer.h"
#include <string.h>
#define _USE_MATH_DEFINES
#include <math.h>
#include <algorithm>
#include <signal.h>
#ifndef WIN64
#include <pthread.h>
#else
#include "WindowsErrors.h"
#endif
using namespace std;
static SOCKET serverSock = 0;
// ------------------------------------------------------------------------------------------------------
// Common part
// ------------------------------------------------------------------------------------------------------
#define MAX_CLIENT 256
#define WAIT_FOR_READ 1
#define WAIT_FOR_WRITE 2
#define SERVER_VERSION 3
#define SERVER_HEADER 0x67DEDDC1
#define KANG_PER_BLOCK 2048
// Commands
#define SERVER_GETCONFIG 0
#define SERVER_STATUS 1
#define SERVER_SENDDP 2
#define SERVER_SETKNB 3
#define SERVER_SAVEKANG 4
#define SERVER_LOADKANG 5
#define SERVER_RESETDEAD 'R'
// Status
#define SERVER_OK 0
#define SERVER_END 1
#define SERVER_BACKUP 2
#ifdef WIN64
#define close_socket(s) closesocket(s)
typedef int socklen_t;
string GetNetworkError() {
int err = WSAGetLastError();
bool found = false;
int i=0;
while(!found && i<NBWSAERRORS) {
found = (WSAERRORS[i].errCode == err);
if(!found) i++;
}
if(!found) {
char ret[256];
sprintf(ret,"WSA Error code %d",err);
return string(ret);
} else {
return string(WSAERRORS[i].mesg);
}
}
#else
#define close_socket(s) close(s)
string GetNetworkError() {
return string(strerror(errno));
}
#endif
#define GET(name,s,b,bl,t) if( (nbRead=Read(s,(char *)(b),bl,t))<0 ) { ::printf("\nReadError(" name "): %s\n",lastError.c_str()); isConnected = false; close_socket(s); return false; }
#define PUT(name,s,b,bl,t) if( (nbWrite=Write(s,(char *)(b),bl,t))<0 ) { ::printf("\nWriteError(" name "): %s\n",lastError.c_str()); isConnected = false; close_socket(s); return false; }
#define GETFREE(name,s,b,bl,t,x) if( (nbRead=Read(s,(char *)(b),bl,t))<0 ) { ::printf("\nReadError(" name "): %s\n",lastError.c_str()); isConnected = false; ::free(x); close_socket(s); return false; }
#define PUTFREE(name,s,b,bl,t,x) if( (nbWrite=Write(s,(char *)(b),bl,t))<0 ) { ::printf("\nWriteError(" name "): %s\n",lastError.c_str()); isConnected = false; ::free(x); close_socket(s); return false; }
void sig_handler(int signo) {
if(signo == SIGINT) {
::printf("\nTerminated\n");
if(serverSock>0) close_socket(serverSock);
#ifdef WIN64
WSACleanup();
#endif
exit(0);
}
}
int Kangaroo::WaitFor(SOCKET sock,int timeout,int mode) {
fd_set fdset;
fd_set *rd = NULL,*wr = NULL;
struct timeval tmout;
int result;
FD_ZERO(&fdset);
FD_SET(sock,&fdset);
if(mode == WAIT_FOR_READ)
rd = &fdset;
if(mode == WAIT_FOR_WRITE)
wr = &fdset;
tmout.tv_sec = (int)(timeout / 1000);
tmout.tv_usec = (int)(timeout % 1000) * 1000;
do
result = select((int)sock + 1,rd,wr,NULL,&tmout);
#ifdef WIN64
while(result < 0 && WSAGetLastError() == WSAEINTR);
#else
while(result < 0 && errno == EINTR);
#endif
if(result == 0) {
lastError = "The operation timed out";
} else if(result < 0) {
lastError = GetNetworkError();
return 0;
}
return result;
}
int Kangaroo::Write(SOCKET sock,char *buf,int bufsize,int timeout) {
int total_written = 0;
int written = 0;
while(bufsize > 0)
{
// Wait
if(!WaitFor(sock,timeout,WAIT_FOR_WRITE))
return -1;
// Write
do
written = send(sock,buf,bufsize,0);
#ifdef WIN64
while(written == -1 && WSAGetLastError() == WSAEINTR);
#else
while(written == -1 && errno == EINTR);
#endif
if(written <= 0)
break;
buf += written;
total_written += written;
bufsize -= written;
}
if(written < 0) {
lastError = GetNetworkError();
return -1;
}
if(bufsize != 0) {
lastError = "Failed to send entire buffer";
return -1;
}
return total_written;
}
int Kangaroo::Read(SOCKET sock,char *buf,int bufsize,int timeout) { // Timeout in millisec
int rd = 0;
int total_read = 0;
while( bufsize>0 ) {
// Wait
if(!WaitFor(sock,timeout,WAIT_FOR_READ)) {
return -1;
}
// Read
do
rd = recv(sock,buf,bufsize,0);
#ifdef WIN64
while(rd == -1 && WSAGetLastError() == WSAEINTR);
#else
while(rd == -1 && errno == EINTR);
#endif
if( rd <= 0 )
break;
buf += rd;
total_read += rd;
bufsize -= rd;
}
if(rd < 0) {
lastError = GetNetworkError();
return -1;
}
if(rd == 0) {
lastError = "Connection closed";
return -1;
}
return total_read;
}
void Kangaroo::InitSocket() {
#ifdef WIN64
// connect to Winscok DLL
WSADATA WSAData;
int err = WSAStartup(MAKEWORD(2,2),&WSAData);
if(err != 0) {
::printf("WSAStartup failed error : %d\n",err);
exit(-1);
}
#endif
}
// ------------------------------------------------------------------------------------------------------
// Server part
// ------------------------------------------------------------------------------------------------------
// Server status
int32_t Kangaroo::GetServerStatus() {
if(endOfSearch) {
return SERVER_END;
}
if(saveRequest) {
return SERVER_BACKUP;
}
return SERVER_OK;
}
#define CLIENT_ABORT() \
::printf("\nClosing connection with %s\n",p->clientInfo); \
close_socket(p->clientSock); \
return false;
// Server request handler
bool Kangaroo::HandleRequest(TH_PARAM *p) {
char cmdBuff;
uint32_t version = SERVER_VERSION;
int nbRead;
int nbWrite;
int32_t state;
while( p->isRunning ) {
// Wait for command (1h timeout)
nbRead = Read(p->clientSock,(char *)(&cmdBuff),1,(int)(CLIENT_TIMEOUT*1000.0));
if(nbRead<=0) {
CLIENT_ABORT();
}
switch(cmdBuff) {
// ----------------------------------------------------------------------------------------
case SERVER_GETCONFIG: {
::printf("\nNew connection from %s\n",p->clientInfo);
// Send config to the client
PUT("Version",p->clientSock,&version,sizeof(uint32_t),ntimeout);
PUT("RangeStart",p->clientSock,rangeStart.bits64,32,ntimeout);
PUT("RangeEnd",p->clientSock,rangeEnd.bits64,32,ntimeout);
PUT("KeyX",p->clientSock,keysToSearch[keyIdx].x.bits64,32,ntimeout);
PUT("KeyY",p->clientSock,keysToSearch[keyIdx].y.bits64,32,ntimeout);
PUT("DP",p->clientSock,&initDPSize,sizeof(int32_t),ntimeout);
} break;
// ----------------------------------------------------------------------------------------
case SERVER_SETKNB: {
GET("nbKangaroo",p->clientSock,&p->nbKangaroo,sizeof(uint64_t),ntimeout);
totalRW += p->nbKangaroo;
} break;
// ----------------------------------------------------------------------------------------
case SERVER_RESETDEAD: {
char response[5];
collisionInSameHerd = 0;
GET("flush",p->clientSock,&response,2,ntimeout);
sprintf(response,"OK\n");
PUT("resp",p->clientSock,&response,3,ntimeout);
} break;
// ----------------------------------------------------------------------------------------
case SERVER_LOADKANG: {
Int checkSum;
Int K;
uint64_t nbKangaroo = 0;
uint32_t strSize;
char fileName[256];
int128_t* KBuff;
uint32_t nbK;
uint32_t header = HEADKS;
uint32_t version = 0;
GET("fileNameLenght",p->clientSock,&strSize,sizeof(uint32_t),ntimeout);
if(strSize >= 256) {
::printf("\nFileName too long (MAX=256) %s\n",p->clientInfo);
CLIENT_ABORT();
}
GET("fileName",p->clientSock,&fileName,strSize,ntimeout);
fileName[strSize] = 0;
FILE* f = fopen(fileName,"rb");
if(f == NULL) {
// No backup
::printf("LoadKang: Cannot open %s for reading\n",fileName);
::printf("%s\n",::strerror(errno));
PUT("nbKangaroo",p->clientSock,&nbKangaroo,sizeof(uint64_t),ntimeout);
break;
}
if(::fread(&header,sizeof(uint32_t),1,f) != 1) {
::printf("LoadKang: Cannot read from %s\n",fileName);
::printf("%s\n",::strerror(errno));
::fclose(f);
CLIENT_ABORT();
}
if(header!=HEADKS) {
::printf("LoadKang: %s Not a compressed kangaroo file\n",fileName);
::printf("%s\n",::strerror(errno));
::fclose(f);
CLIENT_ABORT();
}
::fread(&version,sizeof(uint32_t),1,f);
::fread(&nbKangaroo,sizeof(uint64_t),1,f);
PUT("nbKangaroo",p->clientSock,&nbKangaroo,sizeof(uint64_t),ntimeout);
checkSum.SetInt32(0);
KBuff = (int128_t*)malloc(KANG_PER_BLOCK * sizeof(int128_t));
while(nbKangaroo > 0) {
if(nbKangaroo > KANG_PER_BLOCK) {
nbK = KANG_PER_BLOCK;
} else {
nbK = (uint32_t)nbKangaroo;
}
for(uint32_t k = 0; k < nbK; k++) {
::fread(&KBuff[k],16,1,f);
// Checksum
K.SetInt32(0);
K.bits64[1] = KBuff[k].i64[1];
K.bits64[0] = KBuff[k].i64[0];
checkSum.Add(&K);
}
PUTFREE("packet",p->clientSock,KBuff,nbK * 16,ntimeout,KBuff);
nbKangaroo -= nbK;
}
free(KBuff);
PUT("checkSum",p->clientSock,checkSum.bits64,32,ntimeout);
::fclose(f);
} break;
// ----------------------------------------------------------------------------------------
case SERVER_SAVEKANG: {
Int checkSum;
Int K;
uint64_t nbKangaroo;
uint32_t fileNameSize;
char fileNameTmp[264];
char fileName[256];
int128_t *KBuff;
uint32_t nbK;
uint32_t header = HEADKS;
uint32_t version = 0;
GET("fileNameLenght",p->clientSock,&fileNameSize,sizeof(uint32_t),ntimeout);
if(fileNameSize >= 256) {
::printf("\nFileName too long (MAX=256) %s\n",p->clientInfo);
CLIENT_ABORT();
}
GET("fileName",p->clientSock,&fileName,fileNameSize,ntimeout);
fileName[fileNameSize]=0;
GET("nbKangaroo",p->clientSock,&nbKangaroo,sizeof(uint64_t),ntimeout);
strcpy(fileNameTmp,fileName);
strcat(fileNameTmp,".tmp");
FILE* f = fopen(fileNameTmp,"wb");
if(f == NULL) {
::printf("\nCannot open %s for writing\n",fileNameTmp);
::printf("%s\n",::strerror(errno));
CLIENT_ABORT();
}
if(::fwrite(&header,sizeof(uint32_t),1,f) != 1) {
::printf("\nCannot write to %s\n",fileNameTmp);
::printf("%s\n",::strerror(errno));
::fclose(f);
CLIENT_ABORT();
}
::fwrite(&version,sizeof(uint32_t),1,f);
::fwrite(&nbKangaroo,sizeof(uint64_t),1,f);
checkSum.SetInt32(0);
KBuff = (int128_t *)malloc(KANG_PER_BLOCK*sizeof(int128_t));
while(nbKangaroo>0) {
if(nbKangaroo> KANG_PER_BLOCK) {
nbK = KANG_PER_BLOCK;
} else {
nbK = (uint32_t)nbKangaroo;
}
GETFREE("packet",p->clientSock,KBuff,nbK * 16,ntimeout,KBuff);
for(uint32_t k = 0; k < nbK; k++) {
::fwrite(&KBuff[k],16,1,f);
// Checksum
K.SetInt32(0);
K.bits64[1] = KBuff[k].i64[1];
K.bits64[0] = KBuff[k].i64[0];
checkSum.Add(&K);
}
nbKangaroo -= nbK;
}
free(KBuff);
::fclose(f);
K.SetInt32(0);
GET("checksum",p->clientSock,K.bits64,32,ntimeout);
if(!K.IsEqual(&checkSum)) {
::printf("\nWarning, Kangaroo backup wrong checksum %s\n",fileName);
} else {
remove(fileName);
rename(fileNameTmp,fileName);
}
} break;
case SERVER_STATUS: {
state = GetServerStatus();
PUT("Status",p->clientSock,&state,sizeof(int32_t),ntimeout);
} break;
// ----------------------------------------------------------------------------------------
case SERVER_SENDDP: {
DPHEADER head;
GET("DPHeader",p->clientSock,&head,sizeof(DPHEADER),ntimeout);
if(head.header != SERVER_HEADER) {
::printf("\nUnexpected DP header from %s\n",p->clientInfo);
CLIENT_ABORT();
}
if(head.nbDP == 0) {
::printf("\nUnexpected number of DP [%d] from %s\n",head.nbDP,p->clientInfo);
CLIENT_ABORT();
} else {
//::printf("%d DP from %s\n",nbDP,p->clientInfo.c_str());
DP *dp = (DP *)malloc(sizeof(DP)* head.nbDP);
GETFREE("DP",p->clientSock,dp,sizeof(DP)* head.nbDP,ntimeout,dp);
state = GetServerStatus();
PUTFREE("Status",p->clientSock,&state,sizeof(int32_t),ntimeout,dp);
if(nbRead != sizeof(DP)* head.nbDP) {
::printf("\nUnexpected DP size from %s [nbDP=%d,Got %d,Expected %d]\n",
p->clientInfo,head.nbDP,nbRead,(int)(sizeof(DP)* head.nbDP));
free(dp);
CLIENT_ABORT();
} else {
//#define VALIDITY_POINT_CHECK
#ifdef VALIDITY_POINT_CHECK
// Check validity
for(uint32_t i=0;i< head.nbDP;i++) {
uint64_t h = (uint64_t)dp[i].h;
if(h >= HASH_SIZE) {
::printf("\nInvalid data from: %s [dp=%d PID=%u thId=%u gpuId=%u]\n",p->clientInfo,i,
head.processId,head.threadId,head.gpuId);
free(dp);
CLIENT_ABORT();
}
Int dist;
uint32_t kType;
HashTable::CalcDistAndType(dp[i].d,&dist,&kType);
Point P = secp->ComputePublicKey(&dist);
if(kType == WILD)
P = secp->AddDirect(keyToSearch,P);
uint32_t hC = P.x.bits64[2] & HASH_MASK;
bool ok = (hC == h) && (P.x.bits64[0] == dp[i].x.i64[0]) && (P.x.bits64[1] == dp[i].x.i64[1]);
if(!ok) {
if(kType==TAME) {
::printf("\nWrong TAME point from: %s [dp=%d PID=%u thId=%u gpuId=%u]\n",p->clientInfo,i,
head.processId,head.threadId,head.gpuId);
} else {
::printf("\nWrong WILD point from: %s [dp=%d PID=%u thId=%u gpuId=%u]\n",p->clientInfo,i,
head.processId,head.threadId,head.gpuId);
}
//::printf("X=%s\n",P.x.GetBase16().c_str());
//::printf("X=%08X%08X%08X%08X\n",dp[i].x.i32[3],dp[i].x.i32[2],dp[i].x.i32[1],dp[i].x.i32[0]);
//::printf("D=%08X%08X%08X%08X\n",dp[i].d.i32[3],dp[i].d.i32[2],dp[i].d.i32[1],dp[i].d.i32[0]);
free(dp);
CLIENT_ABORT();
}
}
#endif
LOCK(ghMutex);
DP_CACHE dc;
dc.nbDP = head.nbDP;
dc.dp = dp;
recvDP.push_back(dc);
UNLOCK(ghMutex);
}
}
} break;
default:
::printf("\nUnexpected command [%d] from %s\n",cmdBuff,p->clientInfo);
CLIENT_ABORT();
}
}
close_socket(p->clientSock);
return true;
}
// Threaded proc
#ifdef WIN64
DWORD WINAPI _acceptThread(LPVOID lpParam) {
#else
void *_acceptThread(void *lpParam) {
#endif
TH_PARAM *p = (TH_PARAM *)lpParam;
p->obj->AddConnectedClient();
p->obj->HandleRequest(p);
p->obj->RemoveConnectedClient();
p->obj->RemoveConnectedKangaroo(p->nbKangaroo);
p->isRunning = false;
free(p->clientInfo);
free(p);
return 0;
}
#ifdef WIN64
DWORD WINAPI _processServer(LPVOID lpParam) {
#else
void *_processServer(void *lpParam) {
#endif
Kangaroo *obj = (Kangaroo *)lpParam;
obj->ProcessServer();
return 0;
}
// Main server loop
void Kangaroo::AcceptConnections(SOCKET server_soc) {
SOCKET clientSock;
::printf("Kangaroo server is ready and listening to TCP port %d ...\n",port);
while(true) {
struct sockaddr_in client_add;
socklen_t len = sizeof(sockaddr_in);
if((clientSock = accept(server_soc,(struct sockaddr*)&client_add,&len)) < 0) {
::printf("Error: Invalid Socket returned by accept(): %s\n",GetNetworkError().c_str());
} else {
TH_PARAM *p = (TH_PARAM *)malloc(sizeof(TH_PARAM));
::memset(p,0,sizeof(TH_PARAM));
char info[256];
::sprintf(info,"%s:%d",inet_ntoa(client_add.sin_addr),ntohs(client_add.sin_port));
#ifdef WIN64
p->clientInfo = ::_strdup(info);
#else
p->clientInfo = ::strdup(info);
#endif
p->obj = this;
p->isRunning = true;
p->clientSock = clientSock;
LaunchThread(_acceptThread,p);
}
}
}
// Starts the server
void Kangaroo::RunServer() {
if(signal(SIGINT,sig_handler) == SIG_ERR)
::printf("\nWarning:can't install singal handler\n");
// Set starting parameters
InitRange();
InitSearchKey();
ComputeExpected((double)initDPSize,&expectedNbOp,&expectedMem);
::printf("Expected operations: 2^%.2f\n",log2(expectedNbOp));
::printf("Expected RAM: %.1fMB\n",expectedMem);
if(initDPSize<0) {
::printf("Error: Server must be launched with a specified number of distinguished bits (-d)\n");
exit(-1);
}
SetDP(initDPSize);
if(sizeof(DP) != 40) {
::printf("Error: Invalid DP size struct\n");
exit(-1);
}
if(sizeof(DPHEADER) != 20) {
::printf("Error: Invalid DPHEADER size struct\n");
exit(-1);
}
if(saveKangaroo) {
::printf("Waring: Server does not support -ws, ignoring\n");
saveKangaroo = false;
}
// Main thread of server (handle backup and collision check)
LaunchThread(_processServer,(TH_PARAM *)this);
Timer::SleepMillis(100);
// Server stuff
InitSocket();
/* Create socket */
serverSock = socket(AF_INET,SOCK_STREAM,0);
if(serverSock<0) {
::printf("Error: Invalid socket : %s\n",GetNetworkError().c_str());
exit(-1);
}
struct sockaddr_in soc_addr;
/* Reuse Address */
int32_t yes = 1;
if(setsockopt(serverSock,SOL_SOCKET,SO_REUSEADDR,(char *)&yes,sizeof(yes)) < 0) {
::printf("Warning: Couldn't Reuse Address: %s\n",GetNetworkError().c_str());
}
memset(&soc_addr,0,sizeof(soc_addr));
soc_addr.sin_family = AF_INET;
soc_addr.sin_port = htons(port);
soc_addr.sin_addr.s_addr = htonl(INADDR_ANY);
if(bind(serverSock,(struct sockaddr*)&soc_addr,sizeof(soc_addr))) {
::printf("Error: Can not bind socket. Another server running?\n%s\n",GetNetworkError().c_str());
exit(-1);
}
if(listen(serverSock,MAX_CLIENT)<0) {
::printf("Error: Can not listen to socket\n%s\n",GetNetworkError().c_str());
exit(-1);
}
AcceptConnections(serverSock);
#ifdef WIN64
WSACleanup();
#endif
return;
}
// ------------------------------------------------------------------------------------------------------
// Client part
// ------------------------------------------------------------------------------------------------------
// Connection to the server
bool Kangaroo::ConnectToServer(SOCKET *retSock) {
lastError = "";
// Resolve IP
if(!hostInfo) {
if(signal(SIGINT,sig_handler) == SIG_ERR)
::printf("\nWarning:can't install singal handler\n");
InitSocket();
struct hostent *host_info;
host_info = gethostbyname(serverIp.c_str());
if(host_info == NULL) {
lastError = "Unknown host:" + serverIp;
hostInfo = NULL;
hostInfoLength = 0;
return false;
} else {
hostInfoLength = host_info->h_length;
hostInfo = (char *)malloc(hostInfoLength);
::memcpy(hostInfo,host_info->h_addr,hostInfoLength);
hostAddrType = host_info->h_addrtype;
}
}
struct sockaddr_in server;
// Build TCP connection
SOCKET sock = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if(sock < 0) {
lastError = "Socket error: " + GetNetworkError();
return false;
}
// Use non blocking socket
#ifdef WIN64
unsigned long iMode = 0;
if(ioctlsocket(sock,FIONBIO,&iMode) != 0) {
#else
if(fcntl(sock,F_SETFL,O_NONBLOCK) == -1) {
#endif
lastError = "Cannot use non blocking socket, " + GetNetworkError();
close_socket(sock);
return false;
}
// Connect
::memset(&server,0,sizeof(sockaddr_in));
server.sin_family = hostAddrType;
::memcpy((char*)&server.sin_addr,hostInfo,hostInfoLength);
server.sin_port = htons(port);
int connectStatus = connect(sock,(struct sockaddr *)&server,sizeof(server));
#ifdef WIN64
if((connectStatus < 0) && (WSAGetLastError() != WSAEINPROGRESS)) {
#else
if((connectStatus < 0) && (errno != EINPROGRESS)) {
#endif
lastError = "Cannot connect to host: " + GetNetworkError();
close_socket(sock);
return false;
}
if(connectStatus<0) {
// Wait for connection
if(!WaitFor(sock,ntimeout,WAIT_FOR_WRITE)) {
lastError = "Cannot connect, unreachable host " + serverIp;
close_socket(sock);
return false;
}
// Check connection completion
int socket_err;
#ifdef WIN64
int serrlen = sizeof socket_err;
if(getsockopt(sock,SOL_SOCKET,SO_ERROR,(char *)&socket_err,&serrlen) != 0) {
#else
socklen_t serrlen = sizeof(socket_err);
if(getsockopt(sock,SOL_SOCKET,SO_ERROR,&socket_err,&serrlen) == -1) {
#endif
lastError = "Cannot connect to host: " + GetNetworkError();
close_socket(sock);
return false;
}
if(socket_err != 0) {
lastError = "Cannot connect to host: " + string(strerror(socket_err));
close_socket(sock);
return false;
}
}
int on = 1;
if(setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,
(const char*)&on,sizeof(on)) == -1) {
lastError = "Socket error: setsockopt error SO_REUSEADDR";
close_socket(sock);
return false;
}
int flag = 1;
struct protoent *p;
p = getprotobyname("tcp");
if(setsockopt(sock,p->p_proto,TCP_NODELAY,(char *)&flag,sizeof(flag)) == -1) {
lastError = "Socket error: setsockopt error TCP_NODELAY";
close_socket(sock);
return false;
}
*retSock = sock;
return true;
}
// Wait while server is not ready
void Kangaroo::WaitForServer() {
int nbRead;
int nbWrite;
int32_t status;
bool ok = false;
while(!ok) {
// Wait for connection
while(!isConnected) {
serverStatus = "Fault";
Timer::SleepMillis(1000);
// Try to reconnect
isConnected = ConnectToServer(&serverConn);
if( isConnected ) {
// Resend kangaroo number
char cmd = SERVER_SETKNB;
nbWrite = Write(serverConn,&cmd,1,ntimeout);
if(nbWrite <= 0) {
if(nbWrite < 0)
::printf("\nSendToServer(SetKNb): %s\n",lastError.c_str());
serverStatus = "Not OK";
close_socket(serverConn);
isConnected = false;
}
nbWrite = Write(serverConn,(char *)&totalRW,sizeof(uint64_t),ntimeout);
if(nbWrite <= 0) {
if(nbWrite < 0)
::printf("\nSendToServer(SetKNb): %s\n",lastError.c_str());
serverStatus = "Not OK";
close_socket(serverConn);
isConnected = false;
}
}
}
// Wait for ready
while(isConnected && !ok) {
char cmd = SERVER_STATUS;
nbWrite = Write(serverConn,&cmd,1,ntimeout);
if( nbWrite<=0 ) {
if(nbWrite<0)
::printf("\nSendToServer(Status): %s\n",lastError.c_str());
serverStatus = "Not OK";
close_socket(serverConn);
isConnected = false;
} else {
nbRead = Read(serverConn,(char *)(&status),sizeof(int32_t),ntimeout);
if( nbRead<=0 ) {
if(nbRead<0)
::printf("\nRecvFromServer(Status): %s\n",lastError.c_str());
serverStatus = "Fault";
close_socket(serverConn);
isConnected = false;
} else {
switch(status) {
case SERVER_OK:
serverStatus = "OK";
ok = true;
break;
case SERVER_END:
serverStatus = "END";
endOfSearch = true;
ok = true;
break;
case SERVER_BACKUP:
serverStatus = "Backup";
Timer::SleepMillis(1000);
break;
}
}
}
}
}
}
// Get Kangaroo from server
bool Kangaroo::GetKangaroosFromServer(std::string& fileName,std::vector<int128_t>& kangs) {
int nbRead;
int nbWrite;
uint32_t fileNameSize = (uint32_t)fileName.length();
uint64_t nbKangaroo = 0;
uint32_t nbK;
int128_t* KBuff;
Int checkSum;
WaitForServer();
if(!endOfSearch) {
char cmd = SERVER_LOADKANG;
PUT("CMD",serverConn,&cmd,1,ntimeout);
PUT("fileNameLenght",serverConn,&fileNameSize,sizeof(uint32_t),ntimeout);