1 files changed, 64 insertions, 0 deletions
diff --git a/system/doc/tutorial/cnode_c.c b/system/doc/tutorial/cnode_c.c
new file mode 100644
index 0000000000..8ddb6ffece
--- /dev/null
+++ b/system/doc/tutorial/cnode_c.c
@@ -0,0 +1,64 @@
+/* cnode_c.c */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#include "erl_interface.h"
+#include "ei.h"
+
+#define BUFSIZE 1000
+
+int main(int argc, char **argv) {
+  int fd;                                  /* fd to Erlang node */
+
+  int loop = 1;                            /* Loop flag */
+  int got;                                 /* Result of receive */
+  unsigned char buf[BUFSIZE];              /* Buffer for incoming message */
+  ErlMessage emsg;                         /* Incoming message */
+
+  ETERM *fromp, *tuplep, *fnp, *argp, *resp;
+  int res;
+  
+  erl_init(NULL, 0);
+
+  if (erl_connect_init(1, "secretcookie", 0) == -1)
+    erl_err_quit("erl_connect_init");
+
+  if ((fd = erl_connect("e1@idril")) < 0)
+    erl_err_quit("erl_connect");
+  fprintf(stderr, "Connected to ei@idril\n\r");
+
+  while (loop) {
+
+    got = erl_receive_msg(fd, buf, BUFSIZE, &emsg);
+    if (got == ERL_TICK) {
+      /* ignore */
+    } else if (got == ERL_ERROR) {
+      loop = 0;
+    } else {
+
+      if (emsg.type == ERL_REG_SEND) {
+	fromp = erl_element(2, emsg.msg);
+	tuplep = erl_element(3, emsg.msg);
+	fnp = erl_element(1, tuplep);
+	argp = erl_element(2, tuplep);
+
+	if (strncmp(ERL_ATOM_PTR(fnp), "foo", 3) == 0) {
+	  res = foo(ERL_INT_VALUE(argp));
+	} else if (strncmp(ERL_ATOM_PTR(fnp), "bar", 3) == 0) {
+	  res = bar(ERL_INT_VALUE(argp));
+	}
+
+	resp = erl_format("{cnode, ~i}", res);
+	erl_send(fd, fromp, resp);
+
+	erl_free_term(emsg.from); erl_free_term(emsg.msg);
+	erl_free_term(fromp); erl_free_term(tuplep);
+	erl_free_term(fnp); erl_free_term(argp);
+	erl_free_term(resp);
+      }
+    }
+  }
+}