int main ( int argc, char ** argv )
{
char optChar;
char * target;
int optindx = 0;
int interval = 0;
int count = -1;
int timeout = ICMP_TIMEOUT_SECS;
bool debug = false;
size_t size = 0;
timeval tvin, tvsnt, tvo;
static struct option l_opts[] = { {"count", required_argument, 0, 'c'},
{"debug", no_argument, 0, 'd'},
{"interval", required_argument, 0, 'i'},
{"help", no_argument, 0, 'h'},
{"size", required_argument, 0, 's'},
{"version", no_argument, 0, 'v'},
{0,0,0,0}
};
if ( argc < 2 )
usage();
while ( (optChar = getopt_long(argc, argv, "c:di:hs:v", l_opts, &optindx)) != EOF )
{
switch ( optChar ) {
case 'c':
count = StringUtils::FromString<int>(optarg);
break;
case 'd':
debug = true;
break;
case 'i':
interval = StringUtils::FromString<int>(optarg);
break;
case 'h':
usage();
break;
case 's':
size = StringUtils::FromString<size_t>(optarg);
break;
case 'v':
version();
break;
default:
usage();
break;
}
}
target = strdup(argv[argc-1]);
::memset(&tvsnt, 0, sizeof(tvsnt));
::memset(&tvin, 0, sizeof(tvin));
::memset(&tvo, 0, sizeof(tvo));
if ( interval == 0 )
interval = 1000;
std::string host = target;
::free(target);
Pid = ::getpid() & 0xFFFF;
::signal(SIGPIPE, SIG_IGN);
::signal(SIGINT, &sigHandler);
ipv4addr_t dstaddr = AddrInfo::GetHostAddr(host);
if ( dstaddr == 0 ) {
std::cout << "Invalid target host: " << host << std::endl;
exit(-1);
}
Socket * icmps = new Socket(dstaddr, SOCKET_ICMP, SOCKTYPE_RAW, SOCKET_ICMP);
icmps->init(false);
dropPriv();
neticmp_h * req = NULL;
icmp_ts * its = NULL;
char * wptr = NULL;
char * wbuff = NULL;
char * data = NULL;
const char * dt = NULL;
bool sendReq = true;
sockaddr_t csock;
sockaddr_in* sa;
ipv4addr_t addr;
size_t sz, buflen, idsz;
ssize_t wt, rd;
int cnt, sent, rcvd;
float mstot, avg;
cnt = 1;
sent = 0;
rcvd = 0;
mstot = 0.0;
avg = 0.0;
buflen = 2048;
idsz = sizeof(neticmp_h) + sizeof(icmp_ts);
CircularBuffer * rbuff = new CircularBuffer(buflen);
wbuff = (char*) ::malloc(buflen);
req = (neticmp_h*) wbuff;
its = (icmp_ts*) wbuff + sizeof(neticmp_h);
data = wbuff + idsz;
req->type = ICMP_ECHO;
req->code = 0;
req->chksum = 0;
req->id = Pid;
req->seq = 0;
if ( count > 0 )
cnt = count;
if ( size > (buflen - idsz) )
size = buflen - idsz - 4;
size += Serializer::PadLen(size);
InitDataBlock(size);
dt = RandData.substr(0, size).data();
::memcpy(data, dt, size);
its->size = size;
std::cout << "Sending ";
if ( count > 0 )
std::cout << "(" << count << ") " ;
std::cout << "ICMP echo requests to " << IpAddr::ntop(dstaddr)
<< " (" << host << ")" << std::endl;
std::cout << "ICMP data size is " << size << std::endl;
while ( ! Alarm )
{
rbuff->reset();
if ( ! getTimeOfDay(tvin) )
errorOut("error in gettime");
float lastsnt = timeDiff(tvin, tvsnt);
if ( lastsnt >= interval )
sendReq = true;
if ( sendReq && cnt > 0 ) {
sz = idsz + size; // account for added data size
tvsnt = tvin;
its->secs = tvin.tv_sec;
its->usecs = tvin.tv_usec;
req->chksum = 0;
req->seq++;
req->chksum = Socket::IpChkSum((uint16_t*)req, sz);
wt = icmps->write(wbuff, sz);
if ( wt < 0 )
errorOut("Error in write " + icmps->getErrorString());
sent++;
sendReq = false;
if ( count > 0 )
cnt--;
if ( debug )
std::cout << "Request <" << sent << "> sent" << std::endl;
}
sz = rbuff->writePtrAvailable();
wptr = rbuff->getWritePtr(&sz);
if ( wptr == NULL )
errorOut("Error in writing to rbuff");
rd = icmps->readFrom(wptr, sz, csock);
if ( rd < 0 )
errorOut("Error in readFrom " + icmps->getErrorString());
sa = (sockaddr_in*) &csock;
addr = sa->sin_addr.s_addr;
rbuff->setWritePtr(rd);
if ( rd > 0 && addr == dstaddr )
{
IcmpResponse response;
if ( ! getTimeOfDay(tvin) )
errorOut("error in gettime");
rd = readIcmpHeader(rbuff, response);
if ( rd > 0 && response.icmph.id == Pid ) {
sz = rbuff->readAvailable();
rcvd++;
if ( sz == sizeof(icmp_ts) ) {
timeval tv;
char * idf = rbuff->getReadPtr(&sz);
icmp_ts * ist = (icmp_ts*) idf;
tv.tv_sec = ist->secs;
tv.tv_usec = ist->usecs;
if ( debug )
std::cout << " Received data field in echo response" << std::endl;
rbuff->setReadPtr(sz);
}
float ms = timeDiff(tvin, tvsnt);
std::cout << (rd+sz) << " bytes from " << IpAddr::ntop(addr)
<< ": seq=" << response.icmph.seq << " time=" << ms << " ms"
<< std::endl;
mstot += ms;
avg = (float) mstot / rcvd;
if ( debug )
std::cout << " mstot=" << mstot << " rcvd = " << rcvd << std::endl;
}
}
if ( cnt == 0 ) {
if ( rcvd == cnt )
break;
if ( tvo.tv_sec == 0 )
tvo.tv_sec = tvin.tv_sec;
else if ( (tvin.tv_sec - tvo.tv_sec) > timeout )
break;
}
::usleep(1000);
}
float loss;
if ( rcvd == sent )
loss = 0.0;
else
loss = ( 100.0 - ( ((float) rcvd / (float) sent) * 100.0) );
std::cout << std::endl << "Results:" << std::endl;
std::cout << " Sent " << sent << " requests, received " << rcvd
<< ": Loss=" << loss << "% : Avg Time= " << avg << " ms "
<< std::endl;
return 0;
}
int main ( int argc, char ** argv )
{
size_t buffsize = DEFAULT_CIRBUFFER_SIZE;
size_t maxsize = MAX_CIRBUFFER_SIZE;
if ( argc == 2 )
buffsize = StringUtils::FromString<size_t>(argv[1]);
CircularBuffer * buff = new CircularBuffer(buffsize);
std::string bstr = "0123456789";
int count = buffsize / bstr.length();
std::cout << " buffer capacity = " << buff->size()
<< ", max is " << maxsize
<< ", string '" << bstr << std::endl
<< "', count is " << count << std::endl << std::endl;
while ( buff->writeAvailable() >= bstr.length() )
buff->write(bstr.c_str(), bstr.length());
char * out = (char*) calloc(bstr.length(), sizeof(char));
std::cout << " dataAvail in buffer = " << buff->readAvailable()
<< std::endl;
for ( int i = 0; i < (count / 2); ++i ) {
buff->read(out, bstr.length());
}
std::cout << " read: '" << out << "'" << std::endl;
buffsize = buffsize - (count / 2);
std::cout << " resizing to " << buffsize << std::endl;
if ( ! buff->resize(buffsize) )
std::cout << "RESIZE FAILED" << std::endl;
std::cout << " buffer capacity = " << buff->size() << std::endl
<< " fullDataAvail = " << buff->readAvailable()
<< " dataAvail = " << buff->readPtrAvailable() << std::endl
<< " fullSpaceAvail = " << buff->writeAvailable()
<< " spaceAvail = " << buff->writePtrAvailable()
<< std::endl << std::endl;
int c = 0;
while ( buff->writePtrAvailable() >= bstr.length() ) {
buff->write(bstr.c_str(), bstr.length());
c++;
}
std::cout << " write count = " << c << std::endl << std::endl;
std::cout << " buffer capacity = " << buff->size() << std::endl
<< " fullDataAvail = " << buff->readAvailable()
<< " dataAvail = " << buff->readPtrAvailable() << std::endl
<< " fullSpaceAvail = " << buff->writeAvailable()
<< " spaceAvail = " << buff->writePtrAvailable()
<< std::endl << std::endl;
buffsize = buff->size() + bstr.length();
std::cout << " resizing to " << buffsize << std::endl;
if ( ! buff->resize(buffsize) )
std::cout << " RESIZE FAILED " << std::endl;
std::cout << " buffer capacity = " << buff->size() << std::endl
<< " fullDataAvail = " << buff->readAvailable()
<< " dataAvail = " << buff->readPtrAvailable() << std::endl
<< " fullSpaceAvail = " << buff->writeAvailable()
<< " spaceAvail = " << buff->writePtrAvailable()
<< std::endl << std::endl;
::free(out);
delete buff;
return 0;
}
