X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=dccp_recv.c;h=c0618602571975fbb6ab17b80f633eb8d33aaca0;hp=47351afbae731a08498f08692074b1670a05c490;hb=f4371e133464d82f5f06d0141c96fe86cc390d98;hpb=2c679eeb8bbc93220f85403eca6e9380dc624a6a

diff --git a/dccp_recv.c b/dccp_recv.c
index 47351afb..c0618602 100644
--- a/dccp_recv.c
+++ b/dccp_recv.c
@@ -16,7 +16,6 @@
 
 #include "para.h"
 #include "error.h"
-#include "dccp.h"
 #include "list.h"
 #include "sched.h"
 #include "recv.h"
@@ -26,11 +25,6 @@
 
 #include "dccp_recv.cmdline.h"
 
-/* needed by getaddrinfo */
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netdb.h>
-
 /** the size of the output buffer */
 #define DCCP_BUFSIZE 40960
 
@@ -63,40 +57,24 @@ static int dccp_recv_open(struct receiver_node *rn)
 {
 	struct private_dccp_recv_data *pdd;
 	struct dccp_recv_args_info *conf = rn->conf;
-	int ret;
-	struct addrinfo *ai;
-	char *tmp;
+	int ret = makesock(AF_UNSPEC, IPPROTO_DCCP, 0, conf->host_arg, conf->port_arg);
 
-	rn->buf = para_calloc(DCCP_BUFSIZE);
-	rn->private_data = para_calloc(sizeof(struct private_dccp_recv_data));
-	pdd = rn->private_data;
-	ret = dccp_get_socket();
 	if (ret < 0)
-		goto err_out;
-	pdd->fd = ret;
+		return ret;
+	/*
+	 * Disable unused CCIDs: the receiver does not send any application data to the
+	 * server. By shutting down this unused path we reduce internal processing costs,
+	 * as the unused CCIDs (in the kernel) are then bypassed.
+	 */
+	if (shutdown(ret, SHUT_WR) < 0)
+		return -ERRNO_TO_PARA_ERROR(errno);
 
-	tmp = make_message("%d", conf->port_arg);
-	ret = getaddrinfo(conf->host_arg, tmp, NULL, &ai);
-	free(tmp);
-	if (ret) {
-		ret = -E_ADDR_INFO;
-		goto err_out;
-	}
-	ret = dccp_set_socket(pdd->fd);
-	if (ret < 0)
-		goto err_out;
-	PARA_NOTICE_LOG("connecting to %s:%d\n", conf->host_arg, conf->port_arg);
-	ret = PARA_CONNECT(pdd->fd, ai->ai_addr);
-	freeaddrinfo(ai);
-	if (ret < 0) {
-		ret = -E_DCCP_CONNECT;
-		goto err_out;
-	}
-	mark_fd_nonblock(pdd->fd);
+	rn->buf = para_calloc(DCCP_BUFSIZE);
+	rn->private_data = pdd = para_calloc(sizeof(struct private_dccp_recv_data));
+
+	pdd->fd = ret;
+	mark_fd_nonblocking(pdd->fd);
 	return 1;
-err_out:
-	dccp_recv_close(rn);
-	return ret;
 }
 
 static void dccp_shutdown(void)
@@ -128,9 +106,10 @@ static void dccp_recv_post_select(struct sched *s, struct task *t)
 	struct receiver_node *rn = t->private_data;
 	struct private_dccp_recv_data *pdd = rn->private_data;
 
-	t->ret = -E_DCCP_RECV_EOF;
-	if (rn->output_eof && *rn->output_eof)
+	if (rn->output_error && *rn->output_error) {
+		t->ret = *rn->output_error;
 		goto out;
+	}
 	t->ret = 1;
 	if (!s->select_ret || !FD_ISSET(pdd->fd, &s->rfds))
 		goto out; /* nothing to do */
@@ -141,14 +120,14 @@ static void dccp_recv_post_select(struct sched *s, struct task *t)
 		DCCP_BUFSIZE - rn->loaded);
 	if (t->ret <= 0) {
 		if (!t->ret)
-			t->ret = -E_DCCP_RECV_EOF;
+			t->ret = -E_RECV_EOF;
 		goto out;
 	}
 	rn->loaded += t->ret;
 	return;
 out:
 	if (t->ret < 0)
-		rn->eof = 1;
+		rn->error = t->ret;
 }
 
 /**