Remove some duplicate #include statements.
[paraslash.git] / udp_send.c
index ba7163a..8fca5bc 100644 (file)
@@ -1,36 +1,35 @@
 /*
- * Copyright (C) 2005-2010 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2014 Andre Noll <maan@tuebingen.mpg.de>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
 
 /** \file udp_send.c Para_server's udp sender. */
 
-
-#include <regex.h>
-#include <sys/time.h>
-#include <dirent.h>
+#include <netinet/in.h>
 #include <sys/socket.h>
+#include <regex.h>
+#include <sys/types.h>
 #include <netinet/udp.h>
 #include <net/if.h>
-#include <osl.h>
+#include <arpa/inet.h>
+#include <sys/un.h>
+#include <netdb.h>
 
 #include "server.cmdline.h"
 #include "para.h"
 #include "error.h"
 #include "string.h"
 #include "afh.h"
-#include "afs.h"
 #include "server.h"
 #include "list.h"
 #include "send.h"
+#include "sched.h"
 #include "vss.h"
 #include "portable_io.h"
 #include "net.h"
 #include "fd.h"
-#include "sched.h"
 #include "close_on_fork.h"
-#include "chunk_queue.h"
 
 /**
  * Time window during which ICMP Destination/Port Unreachable messages are
@@ -43,8 +42,6 @@
 struct udp_target {
        /** Track time (seconds) of last ICMP Port Unreachable error */
        time_t last_unreachable;
-       /** Common sender client data */
-       struct sender_client *sc;
        /** The opaque structure returned by vss_add_fec_client(). */
        struct fec_client *fc;
        /** The FEC parameters for this target. */
@@ -56,10 +53,16 @@ static int sender_status;
 
 static void udp_close_target(struct sender_client *sc)
 {
-       if (sc->cq != NULL) {
-               cq_destroy(sc->cq);
-               sc->cq = NULL;
-       }
+       const char *buf;
+       size_t len = vss_get_fec_eof_packet(&buf);
+
+       /*
+        * Ignore the return value of write() since we are closing the target
+        * anyway. The sole purpose of the "do_nothing" statement is to silence
+        * gcc.
+        */
+       if (write(sc->fd, buf, len))
+               do_nothing;
 }
 
 static void udp_delete_target(struct sender_client *sc, const char *msg)
@@ -153,29 +156,16 @@ err:
        return -ERRNO_TO_PARA_ERROR(errno);
 }
 
-/** The maximal size of the per-target chunk queue. */
-#define UDP_CQ_BYTES 40000
-
 static void udp_init_session(struct sender_client *sc)
 {
-       if (sc->cq == NULL) {
-               sc->cq = cq_new(UDP_CQ_BYTES);
-               PARA_NOTICE_LOG("sending to udp %s\n", sc->name);
-       }
+       PARA_NOTICE_LOG("sending to udp %s\n", sc->name);
 }
 
 static void udp_shutdown_targets(void)
 {
        struct sender_client *sc, *tmp;
-       const char *buf;
-       size_t len = vss_get_fec_eof_packet(&buf);
-
        list_for_each_entry_safe(sc, tmp, &targets, node)
-               if (sc->cq != NULL) {
-                       /* ignore return value, closing the target anyway. */
-                       (void)write(sc->fd, buf, len);
-                       udp_close_target(sc);
-               }
+               udp_close_target(sc);
 }
 
 static int udp_resolve_target(const char *url, struct sender_command_data *scd)
@@ -288,26 +278,18 @@ static int udp_check_socket_state(struct sender_client *sc)
        return -ERRNO_TO_PARA_ERROR(ret);
 }
 
-static int udp_send_fec(struct sender_client *sc, char *buf, size_t len)
+static void udp_send_fec(struct sender_client *sc, char *buf, size_t len)
 {
        int ret;
 
        if (sender_status == SENDER_OFF)
-               return 0;
-       if (len == 0 && !cq_peek(sc->cq))
-               return 0;
+               return;
+       if (len == 0)
+               return;
        ret = udp_check_socket_state(sc);
        if (ret < 0)
                goto fail;
-       ret = send_queued_chunks(sc->fd, sc->cq);
-       if (ret < 0)
-               goto fail;
-       if (!ret) { /* still data left in the queue */
-               ret = cq_force_enqueue(sc->cq, buf, len);
-               assert(ret >= 0);
-               return 0;
-       }
-       ret = write_nonblock(sc->fd, buf, len);
+       ret = xwrite(sc->fd, buf, len);
        if (ret == -ERRNO_TO_PARA_ERROR(ECONNREFUSED)) {
                /*
                 * Happens if meanwhile an ICMP Destination / Port Unreachable
@@ -317,14 +299,9 @@ static int udp_send_fec(struct sender_client *sc, char *buf, size_t len)
        }
        if (ret < 0)
                goto fail;
-       if (ret != len) {
-               ret = cq_force_enqueue(sc->cq, buf + ret, len - ret);
-               assert(ret >= 0);
-       }
-       return 1;
+       return;
 fail:
        udp_delete_target(sc, para_strerror(-ret));
-       return ret;
 }
 
 static int udp_com_add(struct sender_command_data *scd)
@@ -339,11 +316,12 @@ static int udp_com_add(struct sender_command_data *scd)
                return -E_TARGET_EXISTS;
        }
        ut = para_calloc(sizeof(*ut));
-       sc = ut->sc = para_calloc(sizeof(*sc));
+       sc = para_calloc(sizeof(*sc));
        ut->fcp.slices_per_group      = scd->slices_per_group;
        ut->fcp.data_slices_per_group = scd->data_slices_per_group;
        ut->fcp.init_fec              = udp_init_fec;
        ut->fcp.send_fec              = udp_send_fec;
+       ut->fcp.need_periodic_header  = true;
 
        sc->private_data = ut;
        sc->fd = -1;
@@ -374,7 +352,7 @@ err:
        return ret;
 }
 
-static char *udp_info(void)
+static char *udp_status(void)
 {
        struct sender_client *sc;
        char *ret, *tgts = NULL;
@@ -390,10 +368,9 @@ static char *udp_info(void)
                tgts = tmp;
        }
        ret = make_message(
-               "udp sender:\n"
-               "\tstatus: %s\n"
-               "\tport: %s\n"
-               "\ttargets: %s\n",
+               "status: %s\n"
+               "port: %s\n"
+               "targets: %s\n",
                (sender_status == SENDER_ON)? "on" : "off",
                stringify_port(conf.udp_default_port_arg, "udp"),
                tgts? tgts : "(none)"
@@ -446,7 +423,7 @@ static char *udp_help(void)
 void udp_send_init(struct sender *s)
 {
        INIT_LIST_HEAD(&targets);
-       s->info = udp_info;
+       s->status = udp_status;
        s->help = udp_help;
        s->send = NULL;
        s->pre_select = NULL;