nanomsg examples

9 files changed, 198 insertions, 0 deletions

diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..c0151b1
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "nanomsg/cppnanomsg"]
+	path = nanomsg/cppnanomsg
+	url = https://github.com/nanomsg/cppnanomsg.git
diff --git a/nanomsg/Makefile b/nanomsg/Makefile
new file mode 100644
index 0000000..634c8cc
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+++ b/nanomsg/Makefile
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+all: pipeline pipelinec pair
+
+pipeline:
+	g++ -I cppnanomsg pipeline.cc -o pipeline /usr/lib64/libnanomsg.so
+
+pipelinec: pipeline.c
+	gcc pipeline.c -o pipeline /usr/lib64/libnanomsg.so
+
+pair: pair.c
+	gcc pair.c -o pair /usr/lib64/libnanomsg.so
+
diff --git a/nanomsg/README b/nanomsg/README
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index 0000000..31cc054
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+++ b/nanomsg/README
@@ -0,0 +1,5 @@
+examples from [1]
+
+
+[1] http://tim.dysinger.net/posts/2013-09-16-getting-started-with-nanomsg.html
+
diff --git a/nanomsg/cppnanomsg b/nanomsg/cppnanomsg
new file mode 160000
+Subproject a36d44db1827a36bbd3868825c1b82d23f10e49
diff --git a/nanomsg/pair b/nanomsg/pair
new file mode 100755
index 0000000..978ab21
--- /dev/null
+++ b/nanomsg/pair
diff --git a/nanomsg/pair.c b/nanomsg/pair.c
new file mode 100644
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+++ b/nanomsg/pair.c
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+#include <assert.h>
+#include <unistd.h>
+#include <string.h>
+#include <nanomsg/nn.h>
+#include <nanomsg/pair.h>
+#include <stdio.h>
+
+#define NODE0 "node0"
+#define NODE1 "node1"
+
+int send_name(int sock, const char *name)
+{
+  printf ("%s: SENDING \"%s\"\n", name, name);
+  int sz_n = strlen (name) + 1; // '\0' too
+  return nn_send (sock, name, sz_n, 0);
+}
+
+int recv_name(int sock, const char *name)
+{
+  char *buf = NULL;
+  int result = nn_recv (sock, &buf, NN_MSG, 0);
+  if (result > 0)
+    {
+      printf ("%s: RECEIVED \"%s\"\n", name, buf);
+      nn_freemsg (buf);
+    }
+  return result;
+}
+
+int send_recv(int sock, const char *name)
+{
+  int to = 100;
+  assert (nn_setsockopt (sock, NN_SOL_SOCKET, NN_RCVTIMEO, &to, sizeof (to)) >= 0);
+  while(1)
+    {
+      recv_name(sock, name);
+      sleep(1);
+      send_name(sock, name);
+    }
+}
+
+int node0 (const char *url)
+{
+  int sock = nn_socket (AF_SP, NN_PAIR);
+  assert (sock >= 0);
+  assert (nn_bind (sock, url) >= 0);
+  send_recv(sock, NODE0);
+  return nn_shutdown (sock, 0);
+}
+
+int node1 (const char *url)
+{
+  int sock = nn_socket (AF_SP, NN_PAIR);
+  assert (sock >= 0);
+  assert (nn_connect (sock, url) >= 0);
+  send_recv(sock, NODE1);
+  return nn_shutdown (sock, 0);
+}
+
+int main (const int argc, const char **argv)
+{
+  if (strncmp (NODE0, argv[1], strlen (NODE0)) == 0 && argc > 1)
+    return node0 (argv[2]);
+  else if (strncmp (NODE1, argv[1], strlen (NODE1)) == 0 && argc > 1)
+    return node1 (argv[2]);
+  else
+    {
+      fprintf (stderr, "Usage: pair %s|%s <URL> <ARG> ...\n",
+               NODE0, NODE1);
+      return 1;
+    }
+}
+
diff --git a/nanomsg/pipeline b/nanomsg/pipeline
new file mode 100755
index 0000000..cacc226
--- /dev/null
+++ b/nanomsg/pipeline
diff --git a/nanomsg/pipeline.c b/nanomsg/pipeline.c
new file mode 100644
index 0000000..37340fa
--- /dev/null
+++ b/nanomsg/pipeline.c
@@ -0,0 +1,52 @@
+#include <assert.h>
+#include <unistd.h>
+#include <string.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <nanomsg/nn.h>
+#include <nanomsg/pipeline.h>
+
+#define NODE0 "node0"
+#define NODE1 "node1"
+
+int node0 (const char *url)
+{
+  int sock = nn_socket (AF_SP, NN_PULL);
+  assert (sock >= 0);
+  assert (nn_bind (sock, url) >= 0);
+  while (1)
+    {
+      char *buf = NULL;
+      int bytes = nn_recv (sock, &buf, NN_MSG, 0);
+      assert (bytes >= 0);
+      printf ("NODE0: RECEIVED \"%s\"\n", buf);
+      nn_freemsg (buf);
+    }
+}
+
+int node1 (const char *url, const char *msg)
+{
+  int sz_msg = strlen (msg) + 1; // '\0' too
+  int sock = nn_socket (AF_SP, NN_PUSH);
+  assert (sock >= 0);
+  assert (nn_connect (sock, url) >= 0);
+  printf ("NODE1: SENDING \"%s\"\n", msg);
+  int bytes = nn_send (sock, msg, sz_msg, 0);
+  assert (bytes == sz_msg);
+  return nn_shutdown (sock, 0);
+}
+
+int main (const int argc, const char **argv)
+{
+  if (strncmp (NODE0, argv[1], strlen (NODE0)) == 0 && argc > 1)
+    return node0 (argv[2]);
+  else if (strncmp (NODE1, argv[1], strlen (NODE1)) == 0 && argc > 2)
+    return node1 (argv[2], argv[3]);
+  else
+    {
+      fprintf (stderr, "Usage: pipeline %s|%s <URL> <ARG> ...'\n",
+               NODE0, NODE1);
+      return 1;
+    }
+}
+
diff --git a/nanomsg/pipeline.cc b/nanomsg/pipeline.cc
new file mode 100644
index 0000000..704f24c
--- /dev/null
+++ b/nanomsg/pipeline.cc
@@ -0,0 +1,54 @@
+/*
+ * template.cpp
+ *
+ * Patrick Simianer <p@simianer.de>
+ * YYYY-MM-DD
+ */
+
+#include <iostream>
+#include <nanomsg/nn.h>
+#include <nanomsg/pipeline.h>
+#include <nn.hpp>
+#include <sstream>
+
+using namespace std;
+
+void
+receiver(const string url)
+{
+  nn::socket s(AF_SP, NN_PULL);
+  s.bind(url.c_str());
+  while (1) {
+    char *buf = NULL;
+    s.recv(&buf, NN_MSG, 0);
+    cout << "receiving " << buf << endl;
+  }
+}
+
+void
+send(const string url, const string msg)
+{
+
+  nn::socket s(AF_SP, NN_PUSH);
+  s.connect(url.c_str());
+  cout << "sending " << msg << endl;
+  s.send(msg.c_str(), msg.size()+1, 0);
+}
+
+int main(int argc, char const* argv[])
+{
+  string cmd(argv[1]);
+  if (cmd == "send") {
+    ostringstream msg;
+    string url(argv[2]);
+    for (size_t i = 3; i < argc; i++)
+      msg << argv[i];
+   send(url, msg.str());
+  } else {
+    string url(argv[1]);
+    receiver(url);
+  }
+
+  return 0;
+}
+