X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fhs_apps%2Fvcl%2Fsock_test_server.c;h=d516c1722dbf0200940600b647b5e65d7bcc069a;hb=fe286f7d1;hp=801cd83cc836efe1dadc7c4047c70dbb90e6b4b9;hpb=0250090fc0c24214cb1fa969f6e2f585099ee36b;p=vpp.git

diff --git a/src/plugins/hs_apps/vcl/sock_test_server.c b/src/plugins/hs_apps/vcl/sock_test_server.c
index 801cd83cc83..d516c1722db 100644
--- a/src/plugins/hs_apps/vcl/sock_test_server.c
+++ b/src/plugins/hs_apps/vcl/sock_test_server.c
@@ -25,25 +25,11 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
-
-#define SOCK_SERVER_USE_EPOLL 1
-#define VPPCOM_SESSION_ATTR_UNIT_TEST 0
-
-#if SOCK_SERVER_USE_EPOLL
 #include <sys/epoll.h>
-#if !defined(VCL_TEST)
 #include <sys/un.h>
-#endif
-#endif
-
-#ifdef VCL_TEST
-#if VPPCOM_SESSION_ATTR_UNIT_TEST
-#define BUFLEN  sizeof (uint64_t) * 16
-uint64_t buffer[16];
-uint32_t buflen = BUFLEN;
-uint32_t *flags = (uint32_t *) buffer;
-#endif
-#endif
+
+#define SOCK_SERVER_MAX_TEST_CONN  10
+#define SOCK_SERVER_MAX_EPOLL_EVENTS 10
 
 typedef struct
 {
@@ -53,10 +39,6 @@ typedef struct
   uint32_t buf_size;
   vcl_test_cfg_t cfg;
   vcl_test_stats_t stats;
-#ifdef VCL_TEST
-  vppcom_endpt_t endpt;
-  uint8_t ip[16];
-#endif
 } sock_server_conn_t;
 
 typedef struct
@@ -66,24 +48,18 @@ typedef struct
   uint32_t transport_udp;
 } sock_server_cfg_t;
 
-#define SOCK_SERVER_MAX_TEST_CONN  10
-#define SOCK_SERVER_MAX_EPOLL_EVENTS 10
 typedef struct
 {
   int listen_fd;
   sock_server_cfg_t cfg;
-#if SOCK_SERVER_USE_EPOLL
   int epfd;
   struct epoll_event listen_ev;
   struct epoll_event wait_events[SOCK_SERVER_MAX_EPOLL_EVENTS];
-#if !defined (VCL_TEST)
   int af_unix_listen_fd;
   int af_unix_fd;
   struct epoll_event af_unix_listen_ev;
   struct sockaddr_un serveraddr;
   uint32_t af_unix_xacts;
-#endif
-#endif
   size_t num_conn;
   size_t conn_pool_size;
   sock_server_conn_t *conn_pool;
@@ -95,40 +71,6 @@ typedef struct
 
 sock_server_main_t sock_server_main;
 
-#if ! SOCK_SERVER_USE_EPOLL
-static inline int
-get_nfds (void)
-{
-  sock_server_main_t *ssm = &sock_server_main;
-  int i, nfds;
-
-  for (nfds = i = 0; i < FD_SETSIZE; i++)
-    {
-      if (FD_ISSET (i, &ssm->rd_fdset) || FD_ISSET (i, &ssm->wr_fdset))
-	nfds = i + 1;
-    }
-  return nfds;
-}
-
-static inline void
-conn_fdset_set (sock_server_conn_t * conn, fd_set * fdset)
-{
-  sock_server_main_t *ssm = &sock_server_main;
-
-  FD_SET (conn->fd, fdset);
-  ssm->nfds = get_nfds ();
-}
-
-static inline void
-conn_fdset_clr (sock_server_conn_t * conn, fd_set * fdset)
-{
-  sock_server_main_t *ssm = &sock_server_main;
-
-  FD_CLR (conn->fd, fdset);
-  ssm->nfds = get_nfds ();
-}
-#endif
-
 static inline void
 conn_pool_expand (size_t expand_size)
 {
@@ -138,28 +80,21 @@ conn_pool_expand (size_t expand_size)
   int i;
 
   conn_pool = realloc (ssm->conn_pool, new_size * sizeof (*ssm->conn_pool));
-  if (conn_pool)
-    {
-      for (i = ssm->conn_pool_size; i < new_size; i++)
-	{
-	  sock_server_conn_t *conn = &conn_pool[i];
-	  memset (conn, 0, sizeof (*conn));
-	  vcl_test_cfg_init (&conn->cfg);
-	  vcl_test_buf_alloc (&conn->cfg, 1 /* is_rxbuf */ ,
-			      &conn->buf, &conn->buf_size);
-	  conn->cfg.txbuf_size = conn->cfg.rxbuf_size;
-	}
+  if (!conn_pool)
+    stfail ("conn_pool_expand()");
 
-      ssm->conn_pool = conn_pool;
-      ssm->conn_pool_size = new_size;
-    }
-  else
+  for (i = ssm->conn_pool_size; i < new_size; i++)
     {
-      int errno_val = errno;
-      perror ("ERROR in conn_pool_expand()");
-      fprintf (stderr, "SERVER: ERROR: Memory allocation "
-	       "failed (errno = %d)!\n", errno_val);
+      sock_server_conn_t *conn = &conn_pool[i];
+      memset (conn, 0, sizeof (*conn));
+      vcl_test_cfg_init (&conn->cfg);
+      vcl_test_buf_alloc (&conn->cfg, 1 /* is_rxbuf */ , &conn->buf,
+			  &conn->buf_size);
+      conn->cfg.txbuf_size = conn->cfg.rxbuf_size;
     }
+
+  ssm->conn_pool = conn_pool;
+  ssm->conn_pool_size = new_size;
 }
 
 static inline sock_server_conn_t *
@@ -172,9 +107,6 @@ conn_pool_alloc (void)
     {
       if (!ssm->conn_pool[i].is_alloc)
 	{
-#ifdef VCL_TEST
-	  ssm->conn_pool[i].endpt.ip = ssm->conn_pool[i].ip;
-#endif
 	  ssm->conn_pool[i].is_alloc = 1;
 	  return (&ssm->conn_pool[i]);
 	}
@@ -186,12 +118,6 @@ conn_pool_alloc (void)
 static inline void
 conn_pool_free (sock_server_conn_t * conn)
 {
-#if ! SOCK_SERVER_USE_EPOLL
-  sock_server_main_t *ssm = &sock_server_main;
-
-  conn_fdset_clr (conn, &ssm->rd_fdset);
-  conn_fdset_clr (conn, &ssm->wr_fdset);
-#endif
   conn->fd = 0;
   conn->is_alloc = 0;
 }
@@ -206,7 +132,7 @@ sync_config_and_reply (sock_server_conn_t * conn, vcl_test_cfg_t * rx_cfg)
 
   if (conn->cfg.verbose)
     {
-      printf ("\nSERVER (fd %d): Replying to cfg message!\n", conn->fd);
+      stinf ("(fd %d): Replying to cfg message!\n", conn->fd);
       vcl_test_cfg_dump (&conn->cfg, 0 /* is_client */ );
     }
   (void) sock_test_write (conn->fd, (uint8_t *) & conn->cfg,
@@ -254,25 +180,25 @@ stream_test_server_start_stop (sock_server_conn_t * conn,
       vcl_test_cfg_dump (&conn->cfg, 0 /* is_client */ );
       if (conn->cfg.verbose)
 	{
-	  printf ("  sock server main\n"
-		  VCL_TEST_SEPARATOR_STRING
-		  "       buf:  %p\n"
-		  "  buf size:  %u (0x%08x)\n"
-		  VCL_TEST_SEPARATOR_STRING,
-		  conn->buf, conn->buf_size, conn->buf_size);
+	  stinf ("  sock server main\n"
+		 VCL_TEST_SEPARATOR_STRING
+		 "       buf:  %p\n"
+		 "  buf size:  %u (0x%08x)\n"
+		 VCL_TEST_SEPARATOR_STRING,
+		 conn->buf, conn->buf_size, conn->buf_size);
 	}
 
       sync_config_and_reply (conn, rx_cfg);
-      printf ("\nSERVER (fd %d): %s-directional Stream Test Complete!\n"
-	      SOCK_TEST_BANNER_STRING "\n", conn->fd,
-	      test == VCL_TEST_TYPE_BI ? "Bi" : "Uni");
+      stinf ("SERVER (fd %d): %s-directional Stream Test Complete!\n"
+	     SOCK_TEST_BANNER_STRING "\n", conn->fd,
+	     test == VCL_TEST_TYPE_BI ? "Bi" : "Uni");
     }
   else
     {
-      printf ("\n" SOCK_TEST_BANNER_STRING
-	      "SERVER (fd %d): %s-directional Stream Test!\n"
-	      "  Sending client the test cfg to start streaming data...\n",
-	      client_fd, test == VCL_TEST_TYPE_BI ? "Bi" : "Uni");
+      stinf (SOCK_TEST_BANNER_STRING
+	     "SERVER (fd %d): %s-directional Stream Test!\n"
+	     "  Sending client the test cfg to start streaming data...\n",
+	     client_fd, test == VCL_TEST_TYPE_BI ? "Bi" : "Uni");
 
       rx_cfg->ctrl_handle = (rx_cfg->ctrl_handle == ~0) ? conn->fd :
 	rx_cfg->ctrl_handle;
@@ -302,75 +228,43 @@ stream_test_server (sock_server_conn_t * conn, int rx_bytes)
     }
 }
 
-#if SOCK_SERVER_USE_EPOLL && !defined (VCL_TEST)
 static inline void
 af_unix_echo (void)
 {
   sock_server_main_t *ssm = &sock_server_main;
-  int af_unix_client_fd;
-  int rv;
-  int errno_val;
+  int af_unix_client_fd, rv;
   uint8_t buffer[256];
   size_t nbytes = strlen (SOCK_TEST_MIXED_EPOLL_DATA) + 1;
 
-#if HAVE_ACCEPT4
-  af_unix_client_fd = accept4 (ssm->af_unix_listen_fd,
-			       (struct sockaddr *) NULL, NULL, NULL);
-#else
   af_unix_client_fd = accept (ssm->af_unix_listen_fd,
 			      (struct sockaddr *) NULL, NULL);
-#endif
   if (af_unix_client_fd < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in af_unix_accept()");
-      fprintf (stderr, "SERVER: ERROR: accept failed "
-	       "(errno = %d)!\n", errno_val);
-      return;
-    }
+    stfail ("af_unix_echo accept()");
 
-  printf ("SERVER: Got an AF_UNIX connection -- fd = %d (0x%08x)!\n",
-	  af_unix_client_fd, af_unix_client_fd);
+  stinf ("Got an AF_UNIX connection -- fd = %d (0x%08x)!",
+	 af_unix_client_fd, af_unix_client_fd);
 
   memset (buffer, 0, sizeof (buffer));
 
   rv = read (af_unix_client_fd, buffer, nbytes);
   if (rv < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in af_unix_echo(): read() failed");
-      fprintf (stderr, "SERVER: ERROR: read(af_unix_client_fd %d (0x%x), "
-	       "nbytes %lu) failed (errno = %d)!\n", af_unix_client_fd,
-	       af_unix_client_fd, nbytes, errno_val);
-      goto done;
-    }
+    stfail ("af_unix_echo read()");
+
   /* Make the buffer is NULL-terminated. */
   buffer[sizeof (buffer) - 1] = 0;
-  printf ("SERVER (AF_UNIX): RX (%d bytes) - '%s'\n", rv, buffer);
+  stinf ("(AF_UNIX): RX (%d bytes) - '%s'", rv, buffer);
 
   if (!strncmp (SOCK_TEST_MIXED_EPOLL_DATA, (const char *) buffer, nbytes))
     {
       rv = write (af_unix_client_fd, buffer, nbytes);
       if (rv < 0)
-	{
-	  errno_val = errno;
-	  perror ("ERROR in af_unix_echo(): write() failed");
-	  fprintf (stderr,
-		   "SERVER: ERROR: write(af_unix_client_fd %d (0x%x), "
-		   "\"%s\", nbytes %ld) failed (errno = %d)!\n",
-		   af_unix_client_fd, af_unix_client_fd, buffer, nbytes,
-		   errno_val);
-	  goto done;
-	}
-      printf ("SERVER (AF_UNIX): TX (%d bytes) - '%s'\n", rv, buffer);
+	stfail ("af_unix_echo write()");
+      stinf ("(AF_UNIX): TX (%d bytes) - '%s'\n", rv, buffer);
       ssm->af_unix_xacts++;
     }
-done:
   close (af_unix_client_fd);
 }
 
-#endif
-
 static inline void
 new_client (void)
 {
@@ -383,64 +277,66 @@ new_client (void)
 
   conn = conn_pool_alloc ();
   if (!conn)
-    {
-      fprintf (stderr, "\nSERVER: ERROR: No free connections!\n");
-      return;
-    }
+    stfail ("No free connections!");
 
-#ifdef VCL_TEST
-  client_fd = vppcom_session_accept (ssm->listen_fd, &conn->endpt, 0);
-  if (client_fd < 0)
-    errno = -client_fd;
-#elif HAVE_ACCEPT4
-  client_fd = accept4 (ssm->listen_fd, (struct sockaddr *) NULL, NULL, NULL);
-#else
   client_fd = accept (ssm->listen_fd, (struct sockaddr *) NULL, NULL);
-#endif
   if (client_fd < 0)
-    {
-      int errno_val;
-      errno_val = errno;
-      perror ("ERROR in new_client()");
-      fprintf (stderr, "SERVER: ERROR: accept failed "
-	       "(errno = %d)!\n", errno_val);
-      return;
-    }
+    stfail ("new_client accept()");
 
-  printf ("SERVER: Got a connection -- fd = %d (0x%08x)!\n",
-	  client_fd, client_fd);
+  stinf ("Got a connection -- fd = %d (0x%08x)!\n", client_fd, client_fd);
+  if (fcntl (client_fd, F_SETFL, O_NONBLOCK) < 0)
+    stfail ("fcntl()");
 
   conn->fd = client_fd;
 
-#if ! SOCK_SERVER_USE_EPOLL
-  conn_fdset_set (conn, &ssm->rd_fdset);
+  struct epoll_event ev;
+  int rv;
+
+  ev.events = EPOLLET | EPOLLIN;
+  ev.data.u64 = conn - ssm->conn_pool;
+  rv = epoll_ctl (ssm->epfd, EPOLL_CTL_ADD, client_fd, &ev);
+
+  if (rv < 0)
+    stfail ("new_client epoll_ctl()");
+
   ssm->nfds++;
-#else
-  {
-    struct epoll_event ev;
-    int rv;
-
-    ev.events = EPOLLIN;
-    ev.data.u64 = conn - ssm->conn_pool;
-#ifdef VCL_TEST
-    rv = vppcom_epoll_ctl (ssm->epfd, EPOLL_CTL_ADD, client_fd, &ev);
-    if (rv)
-      errno = -rv;
-#else
-    rv = epoll_ctl (ssm->epfd, EPOLL_CTL_ADD, client_fd, &ev);
-#endif
-    if (rv < 0)
-      {
-	int errno_val;
-	errno_val = errno;
-	perror ("ERROR in new_client()");
-	fprintf (stderr, "SERVER: ERROR: epoll_ctl failed (errno = %d)!\n",
-		 errno_val);
-      }
-    else
-      ssm->nfds++;
-  }
-#endif
+}
+
+static int
+socket_server_echo_af_unix_init (sock_server_main_t * ssm)
+{
+  int rv;
+
+  if (ssm->af_unix_listen_fd > 0)
+    return 0;
+
+  unlink ((const char *) SOCK_TEST_AF_UNIX_FILENAME);
+  ssm->af_unix_listen_fd = socket (AF_UNIX, SOCK_STREAM, 0);
+  if (ssm->af_unix_listen_fd < 0)
+    stfail ("echo_af_unix_init socket()");
+
+  memset (&ssm->serveraddr, 0, sizeof (ssm->serveraddr));
+  ssm->serveraddr.sun_family = AF_UNIX;
+  strncpy (ssm->serveraddr.sun_path, SOCK_TEST_AF_UNIX_FILENAME,
+	   sizeof (ssm->serveraddr.sun_path));
+
+  rv = bind (ssm->af_unix_listen_fd, (struct sockaddr *) &ssm->serveraddr,
+	     SUN_LEN (&ssm->serveraddr));
+  if (rv < 0)
+    stfail ("echo_af_unix_init bind()");
+
+  rv = listen (ssm->af_unix_listen_fd, 10);
+  if (rv < 0)
+    stfail ("echo_af_unix_init listen()");
+
+  ssm->af_unix_listen_ev.events = EPOLLET | EPOLLIN;
+  ssm->af_unix_listen_ev.data.u32 = SOCK_TEST_AF_UNIX_ACCEPT_DATA;
+  rv = epoll_ctl (ssm->epfd, EPOLL_CTL_ADD, ssm->af_unix_listen_fd,
+		  &ssm->af_unix_listen_ev);
+  if (rv < 0)
+    stfail ("echo_af_unix_init epoll_ctl()");
+
+  return 0;
 }
 
 void
@@ -455,31 +351,111 @@ print_usage_and_exit (void)
   exit (1);
 }
 
+
+static void
+sts_server_echo (sock_server_conn_t * conn, int rx_bytes)
+{
+  int tx_bytes, nbytes, pos;
+
+  /* If it looks vaguely like a string make sure it's terminated */
+  pos = rx_bytes < conn->buf_size ? rx_bytes : conn->buf_size - 1;
+  ((char *) conn->buf)[pos] = 0;
+
+  if (conn->cfg.verbose)
+    stinf ("(fd %d): Echoing back\n", conn->fd);
+
+  nbytes = strlen ((const char *) conn->buf) + 1;
+
+  tx_bytes = sock_test_write (conn->fd, conn->buf, nbytes, &conn->stats,
+			      conn->cfg.verbose);
+  if (tx_bytes >= 0)
+    stinf ("(fd %d): TX (%d bytes) - '%s'\n", conn->fd, tx_bytes, conn->buf);
+}
+
+static int
+sts_handle_cfg (vcl_test_cfg_t * rx_cfg, sock_server_conn_t * conn,
+		int rx_bytes)
+{
+  sock_server_main_t *ssm = &sock_server_main;
+
+  if (rx_cfg->verbose)
+    {
+      stinf ("(fd %d): Received a cfg message!\n", conn->fd);
+      vcl_test_cfg_dump (rx_cfg, 0 /* is_client */ );
+    }
+
+  if (rx_bytes != sizeof (*rx_cfg))
+    {
+      stinf ("(fd %d): Invalid cfg message size (%d) expected %lu!", conn->fd,
+	     rx_bytes, sizeof (*rx_cfg));
+      conn->cfg.rxbuf_size = 0;
+      conn->cfg.num_writes = 0;
+      if (conn->cfg.verbose)
+	{
+	  stinf ("(fd %d): Replying to cfg message!\n", conn->fd);
+	  vcl_test_cfg_dump (rx_cfg, 0 /* is_client */ );
+	}
+      sock_test_write (conn->fd, (uint8_t *) & conn->cfg, sizeof (conn->cfg),
+		       NULL, conn->cfg.verbose);
+      return -1;
+    }
+
+  switch (rx_cfg->test)
+    {
+    case VCL_TEST_TYPE_NONE:
+      sync_config_and_reply (conn, rx_cfg);
+      break;
+
+    case VCL_TEST_TYPE_ECHO:
+      if (socket_server_echo_af_unix_init (ssm))
+	goto done;
+
+      sync_config_and_reply (conn, rx_cfg);
+      break;
+
+    case VCL_TEST_TYPE_BI:
+    case VCL_TEST_TYPE_UNI:
+      stream_test_server_start_stop (conn, rx_cfg);
+      break;
+
+    case VCL_TEST_TYPE_EXIT:
+      stinf ("Have a great day connection %d!", conn->fd);
+      close (conn->fd);
+      conn_pool_free (conn);
+      stinf ("Closed client fd %d", conn->fd);
+      ssm->nfds--;
+      break;
+
+    default:
+      stinf ("ERROR: Unknown test type!\n");
+      vcl_test_cfg_dump (rx_cfg, 0 /* is_client */ );
+      break;
+    }
+
+done:
+  return 0;
+}
+
+static int
+sts_conn_expect_config (sock_server_conn_t * conn)
+{
+  if (conn->cfg.test == VCL_TEST_TYPE_ECHO)
+    return 1;
+
+  return (conn->stats.rx_bytes < 128
+	  || conn->stats.rx_bytes > conn->cfg.total_bytes);
+}
+
 int
 main (int argc, char **argv)
 {
+  int client_fd, rv, main_rv = 0, rx_bytes, c, v, i;
   sock_server_main_t *ssm = &sock_server_main;
-  int client_fd, rv, main_rv = 0;
-  int tx_bytes, rx_bytes, nbytes;
   sock_server_conn_t *conn;
   vcl_test_cfg_t *rx_cfg;
-  uint32_t xtra = 0;
-  uint64_t xtra_bytes = 0;
   struct sockaddr_storage servaddr;
-  int errno_val;
-  int c, v, i;
   uint16_t port = VCL_TEST_SERVER_PORT;
-#if ! SOCK_SERVER_USE_EPOLL
-  fd_set _rfdset, *rfdset = &_rfdset;
-#endif
-#ifdef VCL_TEST
-  vppcom_endpt_t endpt;
-#else
   uint32_t servaddr_size;
-#if ! SOCK_SERVER_USE_EPOLL
-  fd_set _wfdset, *wfdset = &_wfdset;
-#endif
-#endif
 
   opterr = 0;
   while ((c = getopt (argc, argv, "6D")) != -1)
@@ -498,11 +474,9 @@ main (int argc, char **argv)
 	  {
 	  default:
 	    if (isprint (optopt))
-	      fprintf (stderr, "SERVER: ERROR: Unknown "
-		       "option `-%c'.\n", optopt);
+	      stinf ("ERROR: Unknown option `-%c'", optopt);
 	    else
-	      fprintf (stderr, "SERVER: ERROR: Unknown "
-		       "option character `\\x%x'.\n", optopt);
+	      stinf ("ERROR: Unknown option character `\\x%x'.\n", optopt);
 	  }
 	/* fall thru */
       case 'h':
@@ -512,7 +486,7 @@ main (int argc, char **argv)
 
   if (argc < (optind + 1))
     {
-      fprintf (stderr, "SERVER: ERROR: Insufficient number of arguments!\n");
+      stinf ("ERROR: Insufficient number of arguments!\n");
       print_usage_and_exit ();
     }
 
@@ -520,93 +494,25 @@ main (int argc, char **argv)
     port = (uint16_t) v;
   else
     {
-      fprintf (stderr, "SERVER: ERROR: Invalid port (%s)!\n", argv[optind]);
+      stinf ("ERROR: Invalid port (%s)!\n", argv[optind]);
       print_usage_and_exit ();
     }
 
   conn_pool_expand (SOCK_SERVER_MAX_TEST_CONN + 1);
 
-#ifdef VCL_TEST
-  rv = vppcom_app_create ("vcl_test_server");
-  if (rv)
-    {
-      errno = -rv;
-      ssm->listen_fd = -1;
-    }
-  else
-    {
-      ssm->listen_fd = vppcom_session_create (ssm->cfg.transport_udp ?
-					      VPPCOM_PROTO_UDP :
-					      VPPCOM_PROTO_TCP,
-					      0 /* is_nonblocking */ );
-    }
-#else
   ssm->listen_fd = socket (ssm->cfg.address_ip6 ? AF_INET6 : AF_INET,
 			   ssm->cfg.transport_udp ? SOCK_DGRAM : SOCK_STREAM,
 			   0);
-#if SOCK_SERVER_USE_EPOLL && !defined (VCL_TEST)
-  unlink ((const char *) SOCK_TEST_AF_UNIX_FILENAME);
-  ssm->af_unix_listen_fd = socket (AF_UNIX, SOCK_STREAM, 0);
-  if (ssm->af_unix_listen_fd < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in main(): socket(AF_UNIX) failed");
-      fprintf (stderr,
-	       "SERVER: ERROR: socket(AF_UNIX, SOCK_STREAM, 0) failed "
-	       "(errno = %d)!\n", errno_val);
-      return ssm->af_unix_listen_fd;
-    }
-
-  memset (&ssm->serveraddr, 0, sizeof (ssm->serveraddr));
-  ssm->serveraddr.sun_family = AF_UNIX;
-  strncpy (ssm->serveraddr.sun_path, SOCK_TEST_AF_UNIX_FILENAME,
-	   sizeof (ssm->serveraddr.sun_path));
 
-  rv = bind (ssm->af_unix_listen_fd, (struct sockaddr *) &ssm->serveraddr,
-	     SUN_LEN (&ssm->serveraddr));
-  if (rv < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in main(): bind(SOCK_TEST_AF_UNIX_FILENAME) failed");
-      fprintf (stderr, "SERVER: ERROR: bind() fd %d, \"%s\": "
-	       "failed (errno = %d)!\n", ssm->af_unix_listen_fd,
-	       SOCK_TEST_AF_UNIX_FILENAME, errno_val);
-      close (ssm->af_unix_listen_fd);
-      unlink ((const char *) SOCK_TEST_AF_UNIX_FILENAME);
-      return rv;
-    }
-
-  rv = listen (ssm->af_unix_listen_fd, 10);
-  if (rv < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in main(): listen(AF_UNIX) failed");
-      fprintf (stderr, "SERVER: ERROR: listen() fd %d, \"%s\": "
-	       "failed (errno = %d)!\n", ssm->af_unix_listen_fd,
-	       SOCK_TEST_AF_UNIX_FILENAME, errno_val);
-      close (ssm->af_unix_listen_fd);
-      unlink ((const char *) SOCK_TEST_AF_UNIX_FILENAME);
-      return rv;
-    }
-#endif /* SOCK_SERVER_USE_EPOLL */
-#endif
   if (ssm->listen_fd < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in main()");
-      fprintf (stderr, "SERVER: ERROR: socket() failed "
-	       "(errno = %d)!\n", errno_val);
-      return ssm->listen_fd;
-    }
+    stfail ("main listen()");
 
   memset (&servaddr, 0, sizeof (servaddr));
 
   if (ssm->cfg.address_ip6)
     {
       struct sockaddr_in6 *server_addr = (struct sockaddr_in6 *) &servaddr;
-#ifndef VCL_TEST
       servaddr_size = sizeof (*server_addr);
-#endif
       server_addr->sin6_family = AF_INET6;
       server_addr->sin6_addr = in6addr_any;
       server_addr->sin6_port = htons (port);
@@ -614,195 +520,48 @@ main (int argc, char **argv)
   else
     {
       struct sockaddr_in *server_addr = (struct sockaddr_in *) &servaddr;
-#ifndef VCL_TEST
       servaddr_size = sizeof (*server_addr);
-#endif
       server_addr->sin_family = AF_INET;
       server_addr->sin_addr.s_addr = htonl (INADDR_ANY);
       server_addr->sin_port = htons (port);
     }
 
-#ifdef VCL_TEST
-  if (ssm->cfg.address_ip6)
-    {
-      struct sockaddr_in6 *server_addr = (struct sockaddr_in6 *) &servaddr;
-      endpt.is_ip4 = 0;
-      endpt.ip = (uint8_t *) & server_addr->sin6_addr;
-      endpt.port = (uint16_t) server_addr->sin6_port;
-    }
-  else
-    {
-      struct sockaddr_in *server_addr = (struct sockaddr_in *) &servaddr;
-      endpt.is_ip4 = 1;
-      endpt.ip = (uint8_t *) & server_addr->sin_addr;
-      endpt.port = (uint16_t) server_addr->sin_port;
-    }
-
-  rv = vppcom_session_bind (ssm->listen_fd, &endpt);
-  if (rv)
-    {
-      errno = -rv;
-      rv = -1;
-    }
-#else
   rv = bind (ssm->listen_fd, (struct sockaddr *) &servaddr, servaddr_size);
-#endif
   if (rv < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in main()");
-      fprintf (stderr, "SERVER: ERROR: bind failed (errno = %d)!\n",
-	       errno_val);
-      return rv;
-    }
-  if (fcntl (ssm->listen_fd, F_SETFL, O_NONBLOCK) < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in main()");
-      fprintf (stderr, "SERVER: ERROR: fcntl failed (errno = %d)!\n",
-	       errno_val);
-      return rv;
-    }
+    stfail ("main bind()");
 
-#ifdef VCL_TEST
-  rv = vppcom_session_listen (ssm->listen_fd, 10);
-  if (rv)
-    {
-      errno = -rv;
-      rv = -1;
-    }
-#else
-  rv = listen (ssm->listen_fd, 10);
-#endif
+  rv = fcntl (ssm->listen_fd, F_SETFL, O_NONBLOCK);
   if (rv < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in main()");
-      fprintf (stderr, "SERVER: ERROR: listen failed "
-	       "(errno = %d)!\n", errno_val);
-      return rv;
-    }
-
-#if ! SOCK_SERVER_USE_EPOLL
+    stfail ("main fcntl()");
 
-  FD_ZERO (&ssm->wr_fdset);
-  FD_ZERO (&ssm->rd_fdset);
-
-  FD_SET (ssm->listen_fd, &ssm->rd_fdset);
-  ssm->nfds = ssm->listen_fd + 1;
+  rv = listen (ssm->listen_fd, 10);
+  if (rv < 0)
+    stfail ("main listen()");
 
-#else
-#ifdef VCL_TEST
-  ssm->epfd = vppcom_epoll_create ();
-  if (ssm->epfd < 0)
-    errno = -ssm->epfd;
-#else
   ssm->epfd = epoll_create (1);
-#endif
   if (ssm->epfd < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in main()");
-      fprintf (stderr, "SERVER: ERROR: epoll_create failed (errno = %d)!\n",
-	       errno_val);
-      return ssm->epfd;
-    }
+    stfail ("main epoll_create()");
 
-  ssm->listen_ev.events = EPOLLIN;
+  ssm->listen_ev.events = EPOLLET | EPOLLIN;
   ssm->listen_ev.data.u32 = ~0;
-#ifdef VCL_TEST
-  rv = vppcom_epoll_ctl (ssm->epfd, EPOLL_CTL_ADD, ssm->listen_fd,
-			 &ssm->listen_ev);
-  if (rv < 0)
-    errno = -rv;
-#else
-  ssm->af_unix_listen_ev.events = EPOLLIN;
-  ssm->af_unix_listen_ev.data.u32 = SOCK_TEST_AF_UNIX_ACCEPT_DATA;
-  rv = epoll_ctl (ssm->epfd, EPOLL_CTL_ADD, ssm->af_unix_listen_fd,
-		  &ssm->af_unix_listen_ev);
-  if (rv < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in main(): mixed epoll_ctl(EPOLL_CTL_ADD)");
-      fprintf (stderr, "SERVER: ERROR: mixed epoll_ctl(epfd %d (0x%x), "
-	       "EPOLL_CTL_ADD, af_unix_listen_fd %d (0x%x), EPOLLIN) failed "
-	       "(errno = %d)!\n", ssm->epfd, ssm->epfd,
-	       ssm->af_unix_listen_fd, ssm->af_unix_listen_fd, errno_val);
-      close (ssm->af_unix_listen_fd);
-      unlink ((const char *) SOCK_TEST_AF_UNIX_FILENAME);
-      return rv;
-    }
 
   rv = epoll_ctl (ssm->epfd, EPOLL_CTL_ADD, ssm->listen_fd, &ssm->listen_ev);
-#endif
   if (rv < 0)
-    {
-      errno_val = errno;
-      perror ("ERROR in main()");
-      fprintf (stderr, "SERVER: ERROR: epoll_ctl failed "
-	       "(errno = %d)!\n", errno_val);
-      return rv;
-    }
-#endif
+    stfail ("main epoll_ctl()");
 
-  printf ("\nSERVER: Waiting for a client to connect on port %d...\n", port);
+  stinf ("Waiting for a client to connect on port %d...\n", port);
 
   while (1)
     {
-#if ! SOCK_SERVER_USE_EPOLL
-      _rfdset = ssm->rd_fdset;
-
-#ifdef VCL_TEST
-      rv = vppcom_select (ssm->nfds, (unsigned long *) rfdset, NULL, NULL, 0);
-#else
-      {
-	struct timeval timeout;
-	timeout = ssm->timeout;
-	_wfdset = ssm->wr_fdset;
-	rv = select (ssm->nfds, rfdset, wfdset, NULL, &timeout);
-      }
-#endif
-      if (rv < 0)
-	{
-	  perror ("select()");
-	  fprintf (stderr, "\nSERVER: ERROR: select() failed -- aborting!\n");
-	  main_rv = -1;
-	  goto done;
-	}
-      else if (rv == 0)
-	continue;
-
-      if (FD_ISSET (ssm->listen_fd, rfdset))
-	new_client ();
-
-      for (i = 0; i < ssm->conn_pool_size; i++)
-	{
-	  if (!ssm->conn_pool[i].is_alloc)
-	    continue;
-
-	  conn = &ssm->conn_pool[i];
-#else
       int num_ev;
-#ifdef VCL_TEST
-      num_ev = vppcom_epoll_wait (ssm->epfd, ssm->wait_events,
-				  SOCK_SERVER_MAX_EPOLL_EVENTS, 60.0);
-      if (num_ev < 0)
-	errno = -num_ev;
-#else
       num_ev = epoll_wait (ssm->epfd, ssm->wait_events,
 			   SOCK_SERVER_MAX_EPOLL_EVENTS, 60000);
-#endif
       if (num_ev < 0)
-	{
-	  perror ("epoll_wait()");
-	  fprintf (stderr, "\nSERVER: ERROR: epoll_wait() "
-		   "failed -- aborting!\n");
-	  main_rv = -1;
-	  goto done;
-	}
+	stfail ("main epoll_wait()");
+
       if (num_ev == 0)
 	{
-	  fprintf (stderr, "\nSERVER: epoll_wait() timeout!\n");
+	  stinf ("epoll_wait() timeout!\n");
 	  continue;
 	}
       for (i = 0; i < num_ev; i++)
@@ -810,11 +569,7 @@ main (int argc, char **argv)
 	  conn = &ssm->conn_pool[ssm->wait_events[i].data.u32];
 	  if (ssm->wait_events[i].events & (EPOLLHUP | EPOLLRDHUP))
 	    {
-#ifdef VCL_TEST
-	      vppcom_session_close (conn->fd);
-#else
 	      close (conn->fd);
-#endif
 	      continue;
 	    }
 	  if (ssm->wait_events[i].data.u32 == ~0)
@@ -822,186 +577,73 @@ main (int argc, char **argv)
 	      new_client ();
 	      continue;
 	    }
-#if !defined (VCL_TEST)
 	  else if (ssm->wait_events[i].data.u32 ==
 		   SOCK_TEST_AF_UNIX_ACCEPT_DATA)
 	    {
 	      af_unix_echo ();
 	      continue;
 	    }
-#endif
-#endif
 	  client_fd = conn->fd;
 
-#if ! SOCK_SERVER_USE_EPOLL
-	  if (FD_ISSET (client_fd, rfdset))
-#else
 	  if (EPOLLIN & ssm->wait_events[i].events)
-#endif
 	    {
 	    read_again:
 	      rx_bytes = sock_test_read (client_fd, conn->buf,
 					 conn->buf_size, &conn->stats);
-	      if (rx_bytes > 0)
+
+	      if (rx_bytes <= 0)
+		{
+		  if (errno == ECONNRESET)
+		    {
+		      stinf ("Connection reset by peer\n");
+		      main_rv = -1;
+		      goto done;
+		    }
+		  else
+		    continue;
+		}
+
+	      if (sts_conn_expect_config (conn))
 		{
 		  rx_cfg = (vcl_test_cfg_t *) conn->buf;
 		  if (rx_cfg->magic == VCL_TEST_CFG_CTRL_MAGIC)
 		    {
-		      if (rx_cfg->verbose)
+		      sts_handle_cfg (rx_cfg, conn, rx_bytes);
+		      if (!ssm->nfds)
 			{
-			  printf ("SERVER (fd %d): Received a cfg message!\n",
-				  client_fd);
-			  vcl_test_cfg_dump (rx_cfg, 0 /* is_client */ );
-			}
-
-		      if (rx_bytes != sizeof (*rx_cfg))
-			{
-			  printf ("SERVER (fd %d): Invalid cfg message "
-				  "size (%d)!\n  Should be %lu bytes.\n",
-				  client_fd, rx_bytes, sizeof (*rx_cfg));
-			  conn->cfg.rxbuf_size = 0;
-			  conn->cfg.num_writes = 0;
-			  if (conn->cfg.verbose)
-			    {
-			      printf ("SERVER (fd %d): Replying to "
-				      "cfg message!\n", client_fd);
-			      vcl_test_cfg_dump (rx_cfg, 0 /* is_client */ );
-			    }
-			  sock_test_write (client_fd, (uint8_t *) & conn->cfg,
-					   sizeof (conn->cfg), NULL,
-					   conn->cfg.verbose);
-			  continue;
-			}
-
-		      switch (rx_cfg->test)
-			{
-			case VCL_TEST_TYPE_NONE:
-			case VCL_TEST_TYPE_ECHO:
-			  sync_config_and_reply (conn, rx_cfg);
-			  break;
-
-			case VCL_TEST_TYPE_BI:
-			case VCL_TEST_TYPE_UNI:
-			  stream_test_server_start_stop (conn, rx_cfg);
-			  break;
-
-			case VCL_TEST_TYPE_EXIT:
-			  printf ("SERVER: Have a great day, "
-				  "connection %d!\n", client_fd);
-#ifdef VCL_TEST
-			  vppcom_session_close (client_fd);
-#else
-			  close (client_fd);
-#endif
-			  conn_pool_free (conn);
-			  printf ("SERVER: Closed client fd %d\n", client_fd);
-#if ! SOCK_SERVER_USE_EPOLL
-			  if (ssm->nfds == (ssm->listen_fd + 1))
-#else
-			  ssm->nfds--;
-			  if (!ssm->nfds)
-#endif
-			    {
-			      printf ("SERVER: All client connections "
-				      "closed.\n\nSERVER: "
-				      "May the force be with you!\n\n");
-			      goto done;
-			    }
-			  break;
-
-			default:
-			  fprintf (stderr,
-				   "SERVER: ERROR: Unknown test type!\n");
-			  vcl_test_cfg_dump (rx_cfg, 0 /* is_client */ );
-			  break;
+			  stinf ("All client connections closed.\n\nSERVER: "
+				 "May the force be with you!\n\n");
+			  goto done;
 			}
 		      continue;
 		    }
-
-		  else if ((conn->cfg.test == VCL_TEST_TYPE_UNI) ||
-			   (conn->cfg.test == VCL_TEST_TYPE_BI))
-		    {
-		      stream_test_server (conn, rx_bytes);
-		      if (ioctl (conn->fd, FIONREAD))
-			goto read_again;
-		      continue;
-		    }
-
-		  else if (isascii (conn->buf[0]))
-		    {
-		      // If it looks vaguely like a string, make sure it's terminated
-		      ((char *) conn->buf)[rx_bytes <
-					   conn->buf_size ? rx_bytes :
-					   conn->buf_size - 1] = 0;
-		      printf ("SERVER (fd %d): RX (%d bytes) - '%s'\n",
-			      conn->fd, rx_bytes, conn->buf);
-		    }
 		}
-	      else		// rx_bytes < 0
+
+	      if ((conn->cfg.test == VCL_TEST_TYPE_UNI)
+		  || (conn->cfg.test == VCL_TEST_TYPE_BI))
 		{
-		  if (errno == ECONNRESET)
-		    {
-		      printf ("\nSERVER: Connection reset by remote peer.\n"
-			      "  Y'all have a great day now!\n\n");
-		      break;
-		    }
-		  else
-		    continue;
+		  stream_test_server (conn, rx_bytes);
+		  if (ioctl (conn->fd, FIONREAD))
+		    goto read_again;
+		  continue;
 		}
-
-	      if (isascii (conn->buf[0]))
+	      else if (isascii (conn->buf[0]))
 		{
-		  /* If it looks vaguely like a string,
-		   * make sure it's terminated
-		   */
-		  ((char *) conn->buf)[rx_bytes <
-				       conn->buf_size ? rx_bytes :
-				       conn->buf_size - 1] = 0;
-		  if (xtra)
-		    fprintf (stderr, "SERVER: ERROR: "
-			     "FIFO not drained in previous test!\n"
-			     "       extra chunks %u (0x%x)\n"
-			     "        extra bytes %lu (0x%lx)\n",
-			     xtra, xtra, xtra_bytes, xtra_bytes);
-
-		  xtra = 0;
-		  xtra_bytes = 0;
-
-		  if (conn->cfg.verbose)
-		    printf ("SERVER (fd %d): Echoing back\n", client_fd);
-
-		  nbytes = strlen ((const char *) conn->buf) + 1;
-
-		  tx_bytes = sock_test_write (client_fd, conn->buf,
-					      nbytes, &conn->stats,
-					      conn->cfg.verbose);
-		  if (tx_bytes >= 0)
-		    printf ("SERVER (fd %d): TX (%d bytes) - '%s'\n",
-			    conn->fd, tx_bytes, conn->buf);
+		  sts_server_echo (conn, rx_bytes);
 		}
-
-	      else		// Extraneous read data from non-echo tests???
+	      else
 		{
-		  xtra++;
-		  xtra_bytes += rx_bytes;
+		  stwrn ("FIFO not drained! extra bytes %d", rx_bytes);
 		}
 	    }
 	}
     }
 
 done:
-#ifdef VCL_TEST
-  vppcom_session_close (ssm->listen_fd);
-  vppcom_app_destroy ();
-#else
   close (ssm->listen_fd);
-
-#if SOCK_SERVER_USE_EPOLL && !defined (VCL_TEST)
   close (ssm->af_unix_listen_fd);
   unlink ((const char *) SOCK_TEST_AF_UNIX_FILENAME);
-#endif /* SOCK_SERVER_USE_EPOLL */
 
-#endif
   if (ssm->conn_pool)
     free (ssm->conn_pool);