int main(void)
{
struct sockaddr_in si_other;
int s, i;
socklen_t slen=sizeof(si_other);
char buf[BUFLEN];
if ((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1)
diep("socket");
memset((char *) &si_other, 0, sizeof(si_other));
si_other.sin_family = AF_INET;
si_other.sin_port = htons(PORT);
if (inet_aton(SRV_IP, &si_other.sin_addr)==0) {
fprintf(stderr, "inet_aton() failed\n");
exit(1);
}
for (i=0; i<NPACK; i++) {
printf("Sending packet %d\n", i);
sprintf(buf, "This is packet %d\n", i);
if (sendto(s, buf, BUFLEN, 0, (struct sockaddr *)&si_other, slen)==-1)
diep("sendto()");
}
close(s);
return 0;
}
int main(int argc, char *argv[])
{
struct kevent chlist[2]; /* events we want to monitor */
struct kevent evlist[2]; /* events that were triggered */
char buf[BUFSIZE];
int sckfd, kq, nev, i;
/* check argument count */
if (argc != 3) {
fprintf(stderr, "usage: %s host port\n", argv[0]);
exit(EXIT_FAILURE);
}
/* open a connection to a host:port pair */
sckfd = tcpopen(argv[1], atoi(argv[2]));
/* create a new kernel event queue */
if ((kq = kqueue()) == -1)
diep("kqueue()");
/* initialise kevent structures */
EV_SET(&chlist[0], sckfd, EVFILT_READ, EV_ADD | EV_ENABLE, 0, 0, 0);
EV_SET(&chlist[1], fileno(stdin), EVFILT_READ, EV_ADD | EV_ENABLE, 0, 0, 0);
/* loop forever */
for (;;) {
nev = kevent(kq, chlist, 2, evlist, 2, NULL);
if (nev < 0)
diep("kevent()");
else if (nev > 0) {
if (evlist[0].flags & EV_EOF) /* read direction of socket has shutdown */
exit(EXIT_FAILURE);
for (i = 0; i < nev; i++) {
if (evlist[i].flags & EV_ERROR) { /* report errors */
fprintf(stderr, "EV_ERROR: %s\n", strerror(evlist[i].data));
exit(EXIT_FAILURE);
}
if (evlist[i].ident == sckfd) { /* we have data from the host */
memset(buf, 0, BUFSIZE);
if (read(sckfd, buf, BUFSIZE) < 0)
diep("read()");
fputs(buf, stdout);
}
else if (evlist[i].ident == fileno(stdin)) { /* we have data from stdin */
memset(buf, 0, BUFSIZE);
fgets(buf, BUFSIZE, stdin);
sendbuftosck(sckfd, buf, strlen(buf));
}
}
}
}
close(kq);
return EXIT_SUCCESS;
}
void send_data_packet(char *fileName, int s){
//packet style: sequence num + length + data
printf("send_data_packet\n");
int f, i, fileLength = 0;
char readBuffer[LENGTH + 1], ack[5];
unsigned char buf[LENGTH + 8], *ptr;
ack[4] = '\0';
if(expectNum < 1) diep("can not start sending data packet \n");
if((f = open(fileName, O_RDONLY)) == -1) diep("can not open the file when sending data packets\n");
while((i = read(f, readBuffer, LENGTH)) > 0){
readBuffer[i] = '\0';
printf("reading: %s\n", readBuffer);
ptr = encode_data_struct(buf, i, expectNum, readBuffer);
expectNum += i;
fileLength += i;
//printf("ready recv\n");
while(1){ // small loop to do congestion control
if(sendto(s, buf, ptr - buf, 0, &si_other, slen) < 0)
diep("send error\n");
alarm(5);
//recvfrom(s, ack, sizeof(char) * 4, 0, &si_other, &slen) < 0 || expectNum != decode_ack(ack)
if(recvfrom(s, ack, sizeof(char) * 4, 0, &si_other, &slen) >= 0){
if(expectNum == decode_ack(ack)){
alarm(0);
break;
}
}
printf("recv error\n");
}
}
if(expectNum - 1 != fileLength) diep("data sending error\n");
else ackType = 2;
}
void send_connection_packet(char *fileName, int s){
// packet style: file name + file size
// ack style: num
char readBuffer[1000],ack[2];
int f, fileLength = 0, i, j;
unsigned char buf[LENGTH + 8], *ptr;
ack[1] = '\0';
if((f = open(fileName, O_RDONLY)) == -1)
diep("open file failed");
while((i = read(f, readBuffer, 1000)) > 0){
fileLength += i;
}
for(j = 0;j < strlen(fileName); j++)
readBuffer[j] = fileName[j];
ptr = encode_struct(buf, fileLength, readBuffer);
if(sendto(s, buf, ptr - buf, 0, &si_other, slen) == -1)
diep("connection packet error\n");
while(recvfrom(s, ack, 1, 0, &si_other, &slen) < 0){
sendto(s, buf, ptr - buf, 0, &si_other, slen);
}
printf("the recv ack is : %s\n", ack);
ackType = 1;
expectNum = 1;
}
/* *** MAIN *** */
int main() {
// declarations
struct sockaddr_in si_other; // server address
int sockfd;
int i;
int slen = sizeof(si_other);
char buf[BUFLEN];
if ((sockfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
diep("socket");
// not necessary
memset((char *) &si_other, 0, sizeof(si_other));
si_other.sin_family = AF_INET;
si_other.sin_port = htons(PORT);
if (inet_aton(SRV_IP, &si_other.sin_addr) == 0) {
fprintf(stderr, "inet_aton() failed\n");
exit(1);
}
for (i=0; i<NPACK; i++) {
printf("Sending packet %d\n", i);
sprintf(buf, "This is packet %d\n", i);
if (sendto(sockfd, buf, BUFLEN, 0, (struct sockaddr*)&si_other, slen) == -1)
diep("sendto()");
}
close(sockfd);
return 0;
}
int main(int argc, char** argv){
int i;
slen = sizeof(si_other);
unsigned char buf[BUFLEN + 8];
if((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
diep("socket");
memset((char *) &si_me, 0, sizeof(si_me));
si_me.sin_family = AF_INET;
si_me.sin_port = htons(PORT);
si_me.sin_addr.s_addr = htonl(INADDR_ANY);
if(bind(s, &si_me, sizeof(si_me)) == -1)
diep("bind");
while(end < 0){
if(recvfrom(s, buf, BUFLEN + 8, 0, &si_other, &slen) == -1)
diep("recvfrom");
if(connection < 0)
decode_buffer(buf);
else{
decode_fileContent(buf);
}
}
close(s);
return 0;
}
int main(void)
{
struct sockaddr_in si_me, si_other;
int s, i, slen=sizeof(si_other);
char buf[BUFLEN];
if ((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1)
diep("socket");
memset((char *) &si_me, 0, sizeof(si_me));
si_me.sin_family = AF_INET;
si_me.sin_port = htons(PORT);
si_me.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(s, (struct sockaddr*)&si_me, sizeof(si_me))==-1)
diep("bind");
for (i=0; i<NPACK; i++) {
if (recvfrom(s, buf, BUFLEN, 0, (struct sockaddr*)&si_other, (socklen_t*)&slen)==-1)
diep("recvfrom()");
printf("Received packet from %s:%d\nData: %s\n\n",
inet_ntoa(si_other.sin_addr), ntohs(si_other.sin_port), buf);
}
close(s);
return 0;
}
int main(int argc, char *argv[])
{
struct sockaddr_in si_me;
struct sockaddr_in si_other;
int s, i, port;
unsigned int slen = sizeof(si_other);
char buf[BUFLEN];
if ( (s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1 ) {
diep("socket");
return 1;
}
port = 9999;
if (argc > 1) {
port = atoi(argv[1]);
if (port == 0) port = 9999;
}
memset((char *) &si_me, 0, sizeof(si_me));
si_me.sin_family = AF_INET;
si_me.sin_port = htons(port);
si_me.sin_addr.s_addr = htonl(INADDR_ANY);
// cast to consst to avoid warnings
const struct sockaddr * csi_me = (const struct sockaddr *)&si_me;
if ( bind(s, csi_me, sizeof(si_me)) == -1 ) {
diep("bind");
return 1;
}
printf("Listening on %d\n", port);
for ( i = 0 ; i < NPACK ; i++) {
int mes_len = 0;
if ( (mes_len = recvfrom(s, buf, BUFLEN, 0, (struct sockaddr *)&si_other, &slen)) == -1 ) {
diep("recvfrom()");
}
printf("Received packet from %s:%d len %d\nData: %s\n\n", inet_ntoa(si_other.sin_addr), ntohs(si_other.sin_port), mes_len, buf);
FILE *cmd_file = fopen("/var/ops/command", "w+");
if (cmd_file == NULL) {
diep("Cant write to /var/ops/command");
return 1;
}
// buf is not a null terminated string
//fputs(buf, cmd_file);
fwrite(buf, sizeof(char), mes_len, cmd_file);
fclose(cmd_file);
}
close(s);
return 0;
}
int main(void)
{
struct sockaddr_in si_other;
int s, i, slen=sizeof(si_other);
char buf[BUFLEN];
//TEST IF First RUN
int firstRun = 1;
//VARS FOR SENSOR
struct Sensor *mySensor = createSensor();
mySensor->label = CAP_NAME;
mySensor->actions[0] = "GetTemp";
char* msg;
msg = malloc(512);
msg = getInitialMessage(mySensor);
if ((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1)
diep("socket");
memset((char *) &si_other, 0, sizeof(si_other));
si_other.sin_family = AF_INET;
si_other.sin_port = htons(PORT);
if (inet_aton(SRV_IP, &si_other.sin_addr)==0)
{
fprintf(stderr, "inet_aton() failed\n");
exit(1);
}
if(firstRun!=0)
{
printf("FIRST RUN \n");
printf("%s", mySensor->label);
firstRun =0;
//SEND INITIAL DISVOVERY MESSAGE
if (sendto(s, msg, BUFLEN, 0,(struct sockaddr *) &si_other, slen)==-1)
{
diep("sendto()");
}
}
/*for (i=0; i<NPACK; i++)
{
printf("Sending packet %d\n", i);
sprintf(buf, "This is packet %d\n", i);
if (sendto(s, buf, BUFLEN, 0, &si_other, slen)==-1)
diep("sendto()");
}*/
close(s);
return 0;
}
// From http://www.abc.se/~m6695/udp.html
static void LOCAL_udp_listen () {
struct sockaddr_in si_me, si_other;
socklen_t slen=sizeof(si_other);
int s, i, idx;
char buf[UDP_BUFLEN];
int channel, channels, value;
ssize_t packet_length;
if ((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1)
diep("socket");
memset((char *) &si_me, 0, sizeof(si_me));
si_me.sin_family = AF_INET;
si_me.sin_port = htons(UDP_PORT);
si_me.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(s, (struct sockaddr *) &si_me, sizeof(si_me))==-1)
diep("bind");
for (i=0; i<UDP_BUFLEN; i++) {
buf[i] = 0;
}
while (1) {
packet_length = recvfrom(s, buf, UDP_BUFLEN, 0, (struct sockaddr *) &si_other, &slen);
if (packet_length == -1) {
diep("recvfrom()");
}
sscanf(buf, "%d", &channels);
// server exit condition
if (channels < 0) {
break;
}
pruDataMem_byte[DMX_CHANNELS_ADDR] = channels+1;
channel = 0;
buf[packet_length] = 0;
idx = 0;
// skip past the channel definition
while (++idx < packet_length && buf[idx] != ' ');
while (idx < packet_length) {
sscanf(buf+idx, " %d", &value);
// printf("%3d ", value);
if (value > 0) printf("%d ", channel);
pruDataMem_byte[channel++] = value;
// skip past this integer in the packet
while (++idx < packet_length && buf[idx] != ' ');
}
printf("\n");
}
close(s);
}
void logToSignalIndexFile(const SignalFileInfo* pSigFileInfo)
{
// write the string to the index file
if(pSigFileInfo->indexFile == NULL)
diep("Index file not opened\n");
if(pSigFileInfo->saveTagIndexFile == NULL)
diep("Index file not opened\n");
fprintf(pSigFileInfo->indexFile, "%s\n", pSigFileInfo->fileNameRelativeToIndex);
fflush(pSigFileInfo->indexFile);
fprintf(pSigFileInfo->saveTagIndexFile, "%s\n", pSigFileInfo->fileNameShort);
fflush(pSigFileInfo->saveTagIndexFile);
}
int main(int argc, char* argv[]){
//判断是否输入了端口号
if(argc!=2){
printf("Usage: %s PortNumber\n",argv[0]);
exit(-1);
}
//把端口号转化成整数
short port = 5555;
if((port = atoi(argv[1]))==0){
printf("端口号有误！");
exit(-1);
}
WSADATA wsa;
//初始化套接字DLL
if(WSAStartup(MAKEWORD(2,2), &wsa)!=0){
printf("套接字初始化失败!");
exit(-1);
}
{
struct sockaddr_in si_me, si_other;
int s, i, slen=sizeof(si_other);
char buf[BUFLEN];
if ((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1)
diep("socket");
memset((char *) &si_me, 0, sizeof(si_me));
si_me.sin_family = AF_INET;
si_me.sin_port = htons(PORT);
si_me.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(s, (struct sockaddr *)&si_me, sizeof(si_me))==-1)
diep("bind");
for (i=0; i<NPACK; i++) {
if (recvfrom(s, buf, BUFLEN, 0, (struct sockaddr *)&si_other, &slen)==-1)
diep("recvfrom()");
printf("Received packet from %s:%d\nData: %s\n\n",
inet_ntoa(si_other.sin_addr), ntohs(si_other.sin_port), buf);
if (sendto(s, buf, BUFLEN, 0, (struct sockaddr *)&si_other, slen)==-1)
diep("sendto()");
}
closesocket(s);
}
//清理套接字占用的资源
WSACleanup();
return 0;
}
int main(int argc, char *argv[])
{
if(argc>1){
initUart(argv[1]);
}else{
initUart(UART);
}
char buf[BUFLEN];
if ((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1)
{
diep("socket");
}
memset((char *) &si_me, 0, sizeof(si_me));
si_me.sin_family = AF_INET;
si_me.sin_port = htons(PORT);
si_me.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(s, &si_me, sizeof(si_me))==-1)
{
diep("bind");
}
multiWiiInit(multiwiiBuf,sendDataBack);
//Start thread for UART
pthread_t receive_thread;
if(pthread_create(&receive_thread, NULL, receive, NULL)) {
diep("Error creating thread");
}
int len=0;
while (1)
{
if ((len = recvfrom(s, buf, BUFLEN, 0, &si_other, &slen)) == -1)
{
diep("recvfrom()");
}
// printf("data received\n");
multiWiiStartTransmission(buf,len);
//inet_ntoa(si_other.sin_addr), ntohs(si_other.sin_port), buf);
}
close(s);
return 0;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief Send a line on UDP.
////////////////////////////////////////////////////////////////////////////////
int sendline(Params params, std::stringstream& line)
{
int rv ;
if ( !line )
{
LOG_ERROR( "Error - sendline: null line\n") ;
return false ;
}
struct sockaddr_in si_other ;
int s, slen = sizeof(si_other) ;
if ( (s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1 )
diep("socket") ;
memset((char *) &si_other, 0, sizeof(si_other)) ;
si_other.sin_family = AF_INET ;
si_other.sin_port = htons(params.backbonePort) ;
if ( 0 == inet_aton(params.host, &si_other.sin_addr) )
{
LOG_ERROR( "Error - inet_aton(host:%s,port:%i) failed\n", params.host, params.backbonePort ) ;
exit(1) ;
}
struct sockaddr_in servaddr ;
bzero(&servaddr, sizeof(servaddr)) ;
servaddr.sin_family = AF_INET ;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY) ;
servaddr.sin_port = htons(params.backbonePort) ;
rv = bind(s, (struct sockaddr *) &servaddr, sizeof(servaddr)) ;
if( 0 != rv )
{
LOG_ERROR("Error - Unable to bind(port:%u)", params.backbonePort ) ;
exit(1);
}
int type ;
::getMsgType(line.str().c_str(), type/*, false*/);
if ( type == TX_RF || type==TX_CFG || type==TX_RSP )
{
getTaiTime();
line << g_oCfg.sec_frac ;
}
if ( sendto(s, line.str().c_str(), line.str().length(), 0, (const sockaddr*) &si_other, slen)
== -1 )
diep("sendto()") ;
else
LOG_INFO("\tSENT UDP: [%s]: [host:%s] [port:%d] [%s]\n", szNow(), params.host, params.backbonePort, line.str().c_str() ) ;
close(s) ;
return true ;
}
void send(EventHandler *p, const char *data, int len, bool isDataEnd) {
if (!p) {
INFO_OUT("Invalid context");
return;
}
this->pbuff->len = len;
memcpy(this->pbuff->buffer, data, len);
this->pbuff->destId = (uint16_t)(long)(void*)p->getContext();
sem_t* semDest = (p == this->server) ? semClient : semServer;
if (sem_post(semDest) == -1) {
diep("sem_post");
}
if (semDest == semServer) {
if (this->server) {
semNext = semServer;
}
else {
semNext = semClient;
}
} else {
if (this->client) {
semNext = semClient;
} else {
semNext = semServer;
}
}
}
int main(int argc, char *argv[])
{
struct sockaddr_in si_other;
int s, len;
char buffer[1024];
if (argc != 4) {
fprintf(stderr, "Usage: 'udp-stress IP PORT METRIC'\n");
exit(-1);
}
srand(time(NULL));
memset(&si_other, 0, sizeof(si_other));
si_other.sin_family = AF_INET;
si_other.sin_port = htons(atoi(argv[2]));
if (inet_aton(argv[1], &si_other.sin_addr) == 0) {
fprintf(stderr, "inet_aton() failed\n");
exit(1);
}
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
diep("socket");
len = build_packet(buffer, argv[3]);
sendto(s, buffer, len, 0, (void *)&si_other, sizeof(si_other));
close(s);
return 0;
}
int main(int argc, char *argv[])
{
int sock;
struct ifconf ifconf;
struct ifreq ifreq[MAXINTERFACES];
int interfaces;
int i;
// Create a socket or return an error.
sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock < 0)
diep("socket");
// Point ifconf's ifc_buf to our array of interface ifreqs.
ifconf.ifc_buf = (char *) ifreq;
// Set ifconf's ifc_len to the length of our array of interface ifreqs.
ifconf.ifc_len = sizeof ifreq;
// Populate ifconf.ifc_buf (ifreq) with a list of interface names and addresses.
if (ioctl(sock, SIOCGIFCONF, &ifconf) == -1)
diep("ioctl");
// Divide the length of the interface list by the size of each entry.
// This gives us the number of interfaces on the system.
interfaces = ifconf.ifc_len / sizeof(ifreq[0]);
// Print a heading that includes the total # of interfaces.
printf("IF(%d)tIPn\n", interfaces);
// Loop through the array of interfaces, printing each one's name and IP.
for (i = 0; i < interfaces; i++) {
char ip[INET_ADDRSTRLEN];
struct sockaddr_in *address = (struct sockaddr_in *) &ifreq[i].ifr_addr;
// Convert the binary IP address into a readable string.
if (!inet_ntop(AF_INET, &address->sin_addr, ip, sizeof(ip)))
diep("inet_ntop");
printf("Name: %s\nIP: %s\n", ifreq[i].ifr_name, ip);
}
close(sock);
exit(0);
}
void send_udp_datagram(void *buf, int len, int socket, char *target_host, int target_port)
{
struct sockaddr_in target_si;
struct hostent *he;
memset((char *) &target_si, 0, sizeof(target_si));
target_si.sin_family = AF_INET;
target_si.sin_port = htons(target_port);
if (!(he = gethostbyname2(target_host, AF_INET)))
diep("gethostbyname2");
memmove(&target_si.sin_addr.s_addr, he->h_addr, he->h_length);
if (sendto(socket, buf, len, 0, (struct sockaddr *) &target_si, sizeof(target_si)) == -1)
diep("sendto");
}
// From http://www.abc.se/~m6695/udp.html
static void LOCAL_udp_listen () {
struct sockaddr_in si_me, si_other;
int s, i, slen=sizeof(si_other);
char buf[UDP_BUFLEN];
int channel, channels, value;
int packet_length;
if ((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1)
diep("socket");
memset((char *) &si_me, 0, sizeof(si_me));
si_me.sin_family = AF_INET;
si_me.sin_port = htons(UDP_PORT);
si_me.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(s, &si_me, sizeof(si_me))==-1)
diep("bind");
for (i=0; i<UDP_BUFLEN; i++) {
buf[i] = 0;
}
// signal(SIGABRT, &sighandler);
// signal(SIGTERM, &sighandler);
// signal(SIGINT, &sighandler);
while (udp_forever) {
packet_length = recvfrom(s, buf, UDP_BUFLEN, 0, &si_other, &slen);
if (packet_length == -1) {
diep("recvfrom()");
}
sscanf(buf, "%3d ", &channels);
pruDataMem_byte[DMX_CHANNELS_ADDR] = channels+1; // does this get updated too often?
channel = 0;
buf[packet_length] = 0;
for (i=4; i<packet_length; i+=4) {
// printf("\tReceived packet (size %d) from %s:%d\nData: %s\n\n", packet_length, inet_ntoa(si_other.sin_addr), ntohs(si_other.sin_port), buf);
sscanf(buf+i, "%3d ", &value);
// printf("%3d %3d ", channel, value);
pruDataMem_byte[channel++] = value;
}
// printf("\n");
}
close(s);
}
int main(void)
{
struct sockaddr_in si_me, si_other;
int s, i;
int slen = sizeof(si_other);
char buf[BUFLEN];
uint64_t start;
uint64_t end;
uint64_t elapsed;
uint64_t elapsedNano;
static mach_timebase_info_data_t sTimebaseInfo;
if ( sTimebaseInfo.denom == 0 ) {
(void) mach_timebase_info(&sTimebaseInfo);
}
start = mach_absolute_time();
if((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP))==-1) {
diep("socket");
}
memset((char *) &si_me, 0, sizeof(si_me));
si_me.sin_family = AF_INET;
si_me.sin_port = htons(PORT);
si_me.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(s, (struct sockaddr *)&si_me, sizeof(si_me))==-1) {
diep("bind");
}
for (i = 0; i < NPACK; i ++) {
if (recvfrom(s, buf, BUFLEN, 0, (struct sockaddr *)&si_other, (unsigned int *)&slen)==-1) {
diep("recvfrom()");
}
end = mach_absolute_time();
// printf("Received packet from %s:%d\nData: %s\n",
// inet_ntoa(si_other.sin_addr), ntohs(si_other.sin_port), buf);
printf(" time: %llu ns, elapsed=%llu ns\n", end, end-start);
start = end;
}
close(s);
return 0;
}
void send_end_packet(int s){
printf("send_end_packet\n");
char end[2], rec[2];
end[0] = '1';
end[1] = '\0';
rec[1] = '\0';
if(sendto(s, end, 1, 0, &si_other, slen) == -1)
diep("end packet error\n");
while(recvfrom(s, rec, 1, 0, &si_other, &slen) < 0){
if(sendto(s, end, 1, 0, &si_other, slen) == -1)
diep("end packet error\n");
}
if(rec[0] != '1')
diep("wrong fin\n");
fin = 1;
}
int main(int argc, char** argv){
int s, i;
slen = sizeof(si_other);
char fileName[1000];
struct sigaction act;
act.sa_handler = sighandler;
act.sa_flags = 0;
strcpy(fileName, argv[1]);
nameLength = strlen(fileName);
if(argc != 2)
diep("please enter filename");
if(sigaction(SIGALRM, &act, 0) == -1)
perror("sigaction\n");
if((s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
diep("socket");
memset((char *) &si_other, 0, sizeof(si_other));
si_other.sin_family = AF_INET;
si_other.sin_port = htons(PORT);
if(inet_aton(SRV_IP, &si_other.sin_addr) == 0){
fprintf(stderr, "inet_aton() failed\n");
exit(1);
}
while(fin < 0){
if(ackType == -1)
send_connection_packet(fileName, s);
else if(ackType == 1)
send_data_packet(fileName, s);
else
send_end_packet(s);
}
printf("end the connection\n");
close(s);
return 0;
}
int main(void) {
struct sockaddr_in si_me, si_other;
int s, i, slen = sizeof(si_other);
int n;
uint8_t buf[BUFLEN];
if ((s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
diep("socket");
memset((char *) &si_me, 0, sizeof(si_me));
si_me.sin_family = AF_INET;
si_me.sin_port = htons(PORT);
si_me.sin_addr.s_addr = htonl(INADDR_ANY );
if (bind(s, (struct sockaddr*) &si_me, sizeof(si_me)) == -1)
diep("bind");
printf("Starting server\n");
while (1) {
printf(".");
n = recvfrom(s, buf, BUFLEN, 0, (struct sockaddr *) &si_other, (socklen_t *) &slen);
if (n == -1) {
diep("recvfrom()");
break;
}
printf("Received packet from %s on port %d\n", inet_ntoa(si_other.sin_addr), ntohs(si_other.sin_port));
for (i = 0; i < n; i++)
printf("%x ", buf[i]);
printf("\n");
int64_t timestamp;
memcpy(×tamp, buf+145, 8);
printf(" Timestamp = %llu\n\n", timestamp);
}
printf("---------------------\n");
close(s);
return 0;
}
void doSend(char* toSend)
{
printf("Sending packet %d\n", num);
sprintf(buf, "This is packet %d\n", num++);
//times 2 because a short is two characters
int sentBytes = sendto(s, toSend, BUFLEN * 2, 0, (struct sockaddr *) &si_other, slen);
if (sentBytes ==-1) {
diep("sendto()");
}
}
void sendbuftosck(int sckfd, const char *buf, int len)
{
int bytessent, pos;
pos = 0;
do {
if ((bytessent = send(sckfd, buf + pos, len - pos, 0)) < 0)
diep("send()");
pos += bytessent;
} while (bytessent > 0);
}
int main(void)
{
UDPTerm udp;
int i;
int msglen;
char buf[512];
if(open_udp_client(&udp, 1))
diep("udpClient_Init");
for (i=0; i<10; i++) {
printf((char*)"Sending packet %d\n", i);
msglen=sprintf(buf, (char*)"This is packet %d\n", i);
if (udp_send(&udp, buf, msglen+1, "192.168.1.1", 9930, NULL) == -1)
diep("send");
usleep(100000);
}
close_udp(&udp);
return 0;
}
void server_new(char *name) {
server_t *server;
if(!(server = (server_t *) calloc(1, sizeof(server_t))))
diep("[-] calloc");
server->server = strdup(name);
list_append(global_lib.servers, (char *) name, server);
// list_dump(global_lib.servers);
}
int open_udp_socket(int port)
{
struct sockaddr_in si_me;
int s;
int reuse = 1;
if ((s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1)
diep("socket");
if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse)) != 0)
diep("setsockopt");
memset((char *) &si_me, 0, sizeof(si_me));
si_me.sin_family = AF_INET;
si_me.sin_port = htons(port);
si_me.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(s, (struct sockaddr *) &si_me, sizeof(si_me)) != 0)
diep("bind");
return s;
}
void createSharedMem() {
if ((key = ftok("/tmp", 'R')) == -1) {
diep("ftok");
}
if ((shmemid = shmget(key, SharedMemorySize, 0644 | IPC_CREAT)) == -1) {
diep("shmemget");
}
pbuff = (membuff *)shmat(shmemid, (void*)0, 0);
if (pbuff == (membuff*)-1) {
diep("shmat");
}
semServer = sem_open(ServerSemName, O_CREAT, 0644, 0);
semClient = sem_open(ClientSemName, O_CREAT, 0644, 0);
if (this->server) {
semNext = semServer;
}
else {
semNext = semClient;
}
}
void writeMxArrayToSigFile(mxArray* mxTrial, mxArray* mxMeta, const SignalFileInfo *pSigFileInfo)
{
int error;
// open the file
MATFile* pmat = matOpen(pSigFileInfo->fileName, "w");
if(pmat == NULL)
diep("Error opening MAT file");
// put variable in file
error = matPutVariable(pmat, "trial", mxTrial);
if(error)
diep("Error putting variable in MAT file");
error = matPutVariable(pmat, "meta", mxMeta);
if(error)
diep("Error putting variable in MAT file");
// close the file
matClose(pmat);
}
