[迁移]zeroMQ 学习

声明：因网易博客将关闭，移到此

不多说这个是什么了，下面学习代码留作备份

环境:
vs 2008
win7
zeromq-3.2.2 (使用vs2008直接编译就可以, 使用的时候记得头文件， lib, dll这几个就好了)
//
记录下运行方式，这里主要是(记得吧libzmq.dll放到exe同目录)

1. 应答模式
   双击编译好的exe程序 输入–srr #这里启动应答的服务器
   双击编译好的exe程序 输入–crr #这里启动应答的客户端
2. 订阅模式
   双击编译好的exe程序 输入–cps #这里启动订阅者 ,启动第1个
   双击编译好的exe程序 输入–cps #这里启动订阅者 启动第2个
   双击编译好的exe程序 输入–sps #这里启动发布者
3. 管道
   双击编译好的exe程序 输入–ts #启动 task sink
   双击编译好的exe程序 输入–tv #启动 task ventilator (这里会要求输入，先等两下哦)
   双击编译好的exe程序 输入–tw #启动 task worker (这里是第1个)
   双击编译好的exe程序 输入–tw #启动 task worker (这里是地2个)
   等两下(让task worker 都连接到 sink 和 ventilator)
   在 task ventilator输入c 回车
   (这里就可以看到结果了，想看图就自己动手弄了 ^_， 无图无真相，不给图，自己运行一遍，
   说不定还有一些有趣的问题会碰到哦)

//
下面是目前修改的代码，已经在上环境运行通过:(总算第1不走出)
/
// lpserver.h 文件
#ifndef __LP_SERVER_H__
#define __LP_SERVER_H__

#include 
#include 

#include 
#include 
#include 
#include 

#include "zhelpers.h"



// 应答模式，必须是一应一答，不能是应应答答，
int server_request_reply()
{
void *ctx = zmq_ctx_new();

void *responder = zmq_socket(ctx, ZMQ_REP);
int ret = zmq_bind(responder, "tcp://*:5555");
assert(ret == 0);
while (1)
{
 zmq_msg_t request;
 zmq_msg_init(&request);
 zmq_msg_recv(&request, responder, 0);

 printf("Received Hello \n");
 zmq_msg_close(&request);

 Sleep(1);

 zmq_msg_t reply;
 zmq_msg_init_size(&reply, 5);
 memcpy(zmq_msg_data(&reply), "World", 5);
 zmq_msg_send(&reply, responder, 0);
 zmq_msg_close(&reply);
}

zmq_close(responder);
zmq_ctx_destroy(ctx);
return 0;
}


int client_request_reply()
{
void *ctx = zmq_ctx_new();
void *client = zmq_socket(ctx, ZMQ_REQ);
int ret = zmq_connect(client,"tcp://localhost:5555");
assert(ret == 0);
while(1)
{
 zmq_msg_t data;
 zmq_msg_init_size(&data, 5);
 memcpy(zmq_msg_data(&data), "Hello", 5);
 zmq_msg_send(&data, client, 0);
 zmq_msg_close(&data);

 Sleep(1);

 zmq_msg_t request;
 zmq_msg_init(&request);
 zmq_msg_recv(&request, client, 0);

 printf("Received Hello \n");
 zmq_msg_close(&request);

}
Sleep(2);
zmq_close(client);
zmq_ctx_destroy(ctx);
return 0;
}

//
// 1:n 模式   publish - subscribe 订阅者模式
int server_publish_subscribe()
{
void *ctx = zmq_ctx_new();
void *publisher = zmq_socket(ctx, ZMQ_PUB);
int rc = zmq_bind(publisher, "tcp://127.0.0.1:5556");
s_error(rc);
assert(rc == 0);

//rc = zmq_bind(publisher, "ipc://weather.ipc");
//s_error(rc);
//assert(rc == 0);

int i = 0;
int times = 0;
srand((unsigned)time(NULL));
while (1)
{
 int zipcode, temperature, relhumidity;
 zipcode  = randof(10);
 temperature = randof(215) - 80;
 relhumidity = randof(50) + 10;

 // send message to all subscribers
 char update[20];
 sprintf(update, "%d %d %d %d", zipcode, temperature, relhumidity, (i++));
 s_send(publisher, update);
 Sleep(1);
 i = (i > 200000000) ? 0:i;

// if (zipcode == 5)
// {
//  times++;
//  printf("set 5 %d \n", i);
//  if (times > 30)
//   break;
// }
}

zmq_close(publisher);
zmq_ctx_destroy(ctx);
return 0;
}


int client_publish_subscribe()
{

void *ctx = zmq_ctx_new();
void *subscriber = zmq_socket(ctx, ZMQ_SUB);
int rc = zmq_connect(subscriber, "tcp://localhost:5556");
assert(rc == 0);

char *filter = "5";
// 这里设置消息头中只有前1个字节是5的才会接受
rc = zmq_setsockopt(subscriber, ZMQ_SUBSCRIBE, filter, strlen(filter));
//rc = zmq_setsockopt(subscriber, ZMQ_SUBSCRIBE, "", 0);
assert(rc == 0);

int update_nbr;
long total_temp = 0;
for (update_nbr = 0; update_nbr < 10; update_nbr++)
{
 char *string = s_recv(subscriber);
 int zipcode, temperature, relhumidity, i;
 sscanf(string, "%d %d %d %d", &zipcode, &temperature, &relhumidity, &i);
 printf("get %d te:%d  ry:%d  index:%d \n", zipcode, temperature, relhumidity, i);
 total_temp += temperature;
 free(string);
}

printf(" Average temperature of zipcode '%s' was %dF\n", filter, (int)(total_temp / update_nbr));

zmq_close(subscriber);
zmq_ctx_destroy(ctx);
return 0;
}


// 管道模型
int task_ventilator()
{
void *ctx = zmq_ctx_new();

void *sender = zmq_socket(ctx, ZMQ_PUSH);
int rc = zmq_bind(sender, "tcp://*:5557");
s_error(rc);
assert(rc == 0);

void *sink = zmq_socket(ctx, ZMQ_PUSH);
rc = zmq_connect(sink, "tcp://localhost:5558");
s_error(rc);
assert(rc == 0);

printf("Press enter when the workers are ready:");
while (1)
{
 int rel = getchar();
 if (rel == 'c')
  break;
}

printf(" Sending task to workers...\n");

s_send(sink, "0");

srand((unsigned)time(NULL));

int task_nbr;
int total_msec = 0;
for (task_nbr = 0; task_nbr < 100; task_nbr++)
{
 int workload;
 workload = randof(100) + 1;
 total_msec += workload;
 char string[10];
 sprintf(string, "%d", workload);
 s_send(sender, string);
}

printf("Total expected cost: %d msec \n", total_msec);
Sleep(1);

zmq_close(sink);
zmq_close(sender);
zmq_ctx_destroy(ctx);
return 0;
}

int task_worker()
{
void *ctx = zmq_ctx_new();
void *receiver = zmq_socket(ctx, ZMQ_PULL);
int rc = zmq_connect(receiver, "tcp://localhost:5557");
s_error(rc);
assert(rc == 0);

void *sender = zmq_socket(ctx, ZMQ_PUSH);
rc = zmq_connect(sender, "tcp://localhost:5558");
s_error(rc);
assert(rc == 0);

while (1)
{
 char *string = s_recv(receiver);
 fflush(stdout);
 printf("%s.", string);

 s_sleep(atoi(string));
 free(string);

 s_send(sender, "");
}

zmq_close(receiver);
zmq_close(receiver);
zmq_ctx_destroy(ctx);
return 0;
}

int task_sink()
{
void *ctx = zmq_ctx_new();
void *receiver = zmq_socket(ctx, ZMQ_PULL);
int rc = zmq_bind(receiver, "tcp://*:5558");
s_error(rc);
assert(rc == 0);

char *string = s_recv(receiver);
free(string);

int64_t start_time = s_clock();

int task_nbr;
for (task_nbr = 0; task_nbr < 100; task_nbr++)
{
 char *string = s_recv(receiver);
 free(string);
 if ((task_nbr / 10) * 10 == task_nbr)
  printf(":");
 else
  printf(".");
 fflush(stdout);
}

printf("Total elapsed time: %d msec \n", (int)(s_clock() - start_time));
zmq_close(receiver);
zmq_ctx_destroy(ctx);
return 0;
}


#endif // __LP_SERVER_H__

/
// zhelpers.h 这个是它的头文件我进行了修改
/*  =====================================================================
   zhelpers.h

   Helper header file for example applications.
   =====================================================================
*/

#ifndef __ZHELPERS_H_INCLUDED__
#define __ZHELPERS_H_INCLUDED__

//  Include a bunch of headers that we will need in the examples

#ifdef    __cplusplus
extern "C" {
#endif

#include 

//#include 
#include 
#include 
#include 
#include 
//#include 
#include 
//#include 
#include 
#include 
#include 
//#include 

#define random rand

typedef INT64 int64_t;
#define __WINDOWS__

//  Version checking, and patch up missing constants to match 2.1
#if ZMQ_VERSION_MAJOR == 2
#   error "Please upgrade to ZeroMQ/3.2 for these examples"
#endif

//  Provide random number from 0..(num-1)
#if (defined (__WINDOWS__))
#   define randof(num)  (int) ((float) (num) * rand () / (RAND_MAX + 1.0))
#else
#   define randof(num)  (int) ((float) (num) * random () / (RAND_MAX + 1.0))
#endif


//  Receive 0MQ string from socket and convert into C string
//  Caller must free returned string. Returns NULL if the context
//  is being terminated.
static char *
s_recv (void *socket) {
   zmq_msg_t message;
   zmq_msg_init (&message);
   int size = zmq_msg_recv (&message, socket, 0);
   if (size == -1)
       return NULL;
   char *string = (char *)malloc (size + 1);
   memcpy (string, zmq_msg_data (&message), size);
   zmq_msg_close (&message);
   string [size] = 0;
   return (string);
}

//  Convert C string to 0MQ string and send to socket
static int
s_send (void *socket, char *string) {
   zmq_msg_t message;
   zmq_msg_init_size (&message, strlen (string));
   memcpy (zmq_msg_data (&message), string, strlen (string));
   int size = zmq_msg_send (&message, socket, 0);
   zmq_msg_close (&message);
   return (size);
}

//  Sends string as 0MQ string, as multipart non-terminal
static int
s_sendmore (void *socket, char *string) {
   zmq_msg_t message;
   zmq_msg_init_size (&message, strlen (string));
   memcpy (zmq_msg_data (&message), string, strlen (string));
   int size = zmq_msg_send (&message, socket, ZMQ_SNDMORE);
   zmq_msg_close (&message);
   return (size);
}

//  Receives all message parts from socket, prints neatly
//
static void
s_dump (void *socket)
{
   puts ("----------------------------------------");
   while (1) {
       //  Process all parts of the message
       zmq_msg_t message;
       zmq_msg_init (&message);
       int size = zmq_msg_recv (&message, socket, 0);

       //  Dump the message as text or binary
       char *data = (char *)zmq_msg_data (&message);
       int is_text = 1;
       int char_nbr;
       for (char_nbr = 0; char_nbr < size; char_nbr++)
           if ((unsigned char) data [char_nbr] < 32
           ||  (unsigned char) data [char_nbr] > 127)
               is_text = 0;

       printf ("[%03d] ", size);
       for (char_nbr = 0; char_nbr < size; char_nbr++) {
           if (is_text)
               printf ("%c", data [char_nbr]);
           else
               printf ("%02X", (unsigned char) data [char_nbr]);
       }
       printf ("\n");

       int64_t more;           //  Multipart detection
       more = 0;
       size_t more_size = sizeof (more);
       zmq_getsockopt (socket, ZMQ_RCVMORE, &more, &more_size);
       zmq_msg_close (&message);
       if (!more)
           break;      //  Last message part
   }
}

//  Set simple random printable identity on socket
//
static void
s_set_id (void *socket)
{
   char identity [10];
   sprintf (identity, "%04X-%04X", randof (0x10000), randof (0x10000));
   zmq_setsockopt (socket, ZMQ_IDENTITY, identity, strlen (identity));
}


//  Sleep for a number of milliseconds
static void
s_sleep (int msecs)
{
#if (defined (__WINDOWS__))
   Sleep (msecs);
#else
   struct timespec t;
   t.tv_sec  =  msecs / 1000;
   t.tv_nsec = (msecs % 1000) * 1000000;
   nanosleep (&t, NULL);
#endif
}

//  Return current system clock as milliseconds
static int64_t
s_clock (void)
{
#if (defined (__WINDOWS__))
   SYSTEMTIME st;
   GetSystemTime (&st);
   return (int64_t) st.wSecond * 1000 + st.wMilliseconds;
#else
   struct timeval tv;
   gettimeofday (&tv, NULL);
   return (int64_t) (tv.tv_sec * 1000 + tv.tv_usec / 1000);
#endif
}

//  Print formatted string to stdout, prefixed by date/time and
//  terminated with a newline.

static void
s_console (const char *format, ...)
{
   time_t curtime = time (NULL);
   struct tm *loctime = localtime (&curtime);
   char *formatted = (char *)malloc (20);
   strftime (formatted, 20, "%y-%m-%d %H:%M:%S ", loctime);
   printf ("%s", formatted);
   free (formatted);

   va_list argptr;
   va_start (argptr, format);
   vprintf (format, argptr);
   va_end (argptr);
   printf ("\n");
}


static void
s_error(int rc)
{
if (rc != 0)
{
 const char *data = zmq_strerror(zmq_errno());
 printf("%s \n", data);
}
}


#ifdef    __cplusplus
}
#endif

#endif  //  __ZHELPERS_H_INCLUDED__

//
// 这个是main.cpp文件
#include 
#include 
#include 
#include "lpserver.h"

char g_str[] = "[option] \n \
--srr  server_request_reply() \n \
--crr client_request_reply() \n \
--sps server_publish_subscribe() \n \
--cps client_publish_subscribe() \n \
--ts task_sink() \n \
--tv task_ventilator() \n \
--tw task_worker() \n ";

void command(char *cmd)
{
if (cmd == NULL)
{
 printf("%s", g_str);
 return;
}

if (strcmp(cmd, "--srr") == 0)
{
 server_request_reply();
}
else if (strcmp(cmd, "--crr") == 0)
{
 client_request_reply();
}
else if (strcmp(cmd, "--sps") == 0)
{
 server_publish_subscribe();
}
else if (strcmp(cmd, "--cps") == 0)
{
 client_publish_subscribe();
}
else if (strcmp(cmd, "--ts") == 0)
{
 task_sink();
}
else if (strcmp(cmd, "--tv") == 0)
{
 task_ventilator();
}
else if (strcmp(cmd, "--tw") == 0)
{
 task_worker();
}
else
{
 printf("%s", g_str);
}
}

int main(int argc, char **argv)
{
if (argc >= 2)
 command(argv[1]);
else
{
 char data[10];
 memset(data, 0, 10);
 scanf("%s", data);
 command(data);
}

system("pause");
return 0;
}