From 5bbdf1632ebb4c41d4520dc373b625267c4df16a Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Tue, 1 Dec 2009 12:32:16 +0000
Subject: heartbeatclient reconnects after socket error now


diff --git a/heartbeatclient.c b/heartbeatclient.c
index f663945..71a381f 100644
--- a/heartbeatclient.c
+++ b/heartbeatclient.c
@@ -157,8 +157,16 @@ int main_loop(int serial_fd, int cmd_fd, options_t* opt)
         break;
     }
 
-    if(FD_ISSET(cmd_fd, &tmpfds))
-      return_value = 0; // ignore data from command sock
+    if(FD_ISSET(cmd_fd, &tmpfds)) {
+      u_int8_t buf[100];
+      int ret = recv(cmd_fd, buf, 100, 0);
+      if(!ret)
+        return_value = 3;
+      if(ret == -1 && errno == EAGAIN)
+        return_value = 0;
+      else if(ret < 0)
+        return_value = ret;
+    }
   }
 
   signal_stop();
@@ -259,28 +267,33 @@ int main(int argc, char* argv[])
     fclose(pid_file);
   }
 
-  int cmd_fd = connect_command_socket(opt.command_sock_);
-  if(cmd_fd < 0) {
-    options_clear(&opt);
-    log_close();
-    exit(-1);
-  }
-  
+  int cmd_fd = 0;
   int serial_fd = 0;
   for(;;) {
-    serial_fd = open(opt.serial_dev_, O_RDWR | O_NOCTTY);
-    if(serial_fd < 0)
-      ret = 2;
-    else {
-      ret = setup_tty(serial_fd, opt.baudrate_);
-      if(ret)
+    cmd_fd = connect_command_socket(opt.command_sock_);
+    if(cmd_fd < 0)
+      ret = 3;
+    else {    
+      serial_fd = open(opt.serial_dev_, O_RDWR | O_NOCTTY);
+      if(serial_fd < 0)
         ret = 2;
-      else
-        ret = main_loop(serial_fd, cmd_fd, &opt);
-    }
-
-    if(ret == 2) {
-      log_printf(ERROR, "%s error, trying to reopen in 5 seconds..", opt.serial_dev_);
+      else {
+        ret = setup_tty(serial_fd, opt.baudrate_);
+        if(ret)
+          ret = 2;
+        else
+          ret = main_loop(serial_fd, cmd_fd, &opt);
+      }
+    }      
+
+    if(ret == 2 || ret == 3) {
+      if(ret == 2) 
+        log_printf(ERROR, "%s error, trying to reopen in 5 seconds..", opt.serial_dev_);
+      if(ret == 3)
+        log_printf(ERROR, "socket error, trying to reconnect in 5 seconds..");
+      
+      if(cmd_fd > 0)
+        close(cmd_fd);
       if(serial_fd > 0)
         close(serial_fd);
       sleep(5);
@@ -289,7 +302,8 @@ int main(int argc, char* argv[])
       break;
   }
 
-  close(cmd_fd);
+  if(cmd_fd > 0)
+    close(cmd_fd);
   if(serial_fd > 0)
     close(serial_fd);
 
-- 
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