From b5fd47dcb6af4b842455c2f6fb2b0fc58704f08c Mon Sep 17 00:00:00 2001
From: TudorCazangiu <tudor.cazangiu@gmail.com>
Date: Sat, 2 Jun 2012 13:26:04 +0300
Subject: [PATCH] implement sendfile client

---
 sendfile/client/Makefile |  7 +++
 sendfile/client/client.c | 93 +++++++++++++++++++++++++++++++++++++++-
 2 files changed, 99 insertions(+), 1 deletion(-)
 create mode 100644 sendfile/client/Makefile

diff --git a/sendfile/client/Makefile b/sendfile/client/Makefile
new file mode 100644
index 0000000..8d5c7ad
--- /dev/null
+++ b/sendfile/client/Makefile
@@ -0,0 +1,7 @@
+FILE=client
+
+$(FILE):$(FILE).o
+
+.PHONY: clean
+clean:
+	-rm -rf $(FILE) $(FILE).o
diff --git a/sendfile/client/client.c b/sendfile/client/client.c
index fc5fa4c..1e5b59e 100644
--- a/sendfile/client/client.c
+++ b/sendfile/client/client.c
@@ -1,5 +1,96 @@
 #include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/sendfile.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <netdb.h>
+
+#define MAX_NUMBER_OF_PEERS		256
+#define CHUNK_SIZE			256
 
 int main(int argc, char **argv) {
-	
+	int sock, err;
+	struct sockaddr_in psin;
+	struct hostent *host;
+	char *file_name;
+	int fd[MAX_NUMBER_OF_PEERS];
+	int peers[MAX_NUMBER_OF_PEERS];
+	int i = 0, total, sent_size;
+
+	if (argc < 4 || argc % 2) {
+		printf("Usage: %s <file_name> <peer_ip1> <peer_port1> <peer_ip2>"
+				" <peer_port2> ...\n", argv[0]);
+		return -1;
+	}
+
+	printf("Create sendfile socket\n");
+
+	sock = socket(AF_INET, SOCK_DGRAM, 0);
+	printf("Socket returned: %d\n", sock);
+
+	if (sock < 0) {
+		printf("Cannot create sendfile socket: %s(%d)\n", 
+				strerror(errno), errno);
+		return -1;
+	}
+	printf("Succesfully created sendfile socket\n");
+
+	argv++;
+	file_name = argv[0];
+	argv++;
+
+	while(*argv) {
+		printf("Create sendfile socket\n");
+
+		sock = socket(AF_INET, SOCK_DGRAM, 0);
+		  printf("Socket returned: %d\n", sock);
+
+		if (sock < 0) {
+			printf("Cannot create sendfile socket: %s(%d)\n", 
+					strerror(errno), errno);
+			return -1;
+		}
+		printf("Succesfully created sendfile socket\n");
+
+		printf("Connecting to: %s:%s\n", argv[0], argv[1]);
+		host = gethostbyname(argv[0]);
+		psin.sin_family = AF_INET;
+		psin.sin_port = htons(atoi(argv[1]));
+		psin.sin_addr = *((struct in_addr*)host->h_addr);
+
+		if (connect(sock, (struct sockaddr *)&psin, 
+					sizeof(struct sockaddr_in)) == -1) {
+			printf("Cannot connect to server: %s(%d)\n", 
+					strerror(errno), errno);
+			continue;
+		}
+		printf("Connected to: %s:%s\n", argv[0], argv[1]);
+		peers[i] = sock;
+		fd[i] = open(file_name, O_RDONLY);
+		if (fd[i++] < 0) {
+			printf("Opening file error: %s(%d)\n", strerror(errno), errno);
+			i--;
+		}
+	}
+
+	total = i;
+
+	do {
+		sent_size = 0;
+
+		for (i = 0; i < total; i++) {
+			if ((err = sendfile(fd[i], peers[i], NULL, CHUNK_SIZE)) < 0) {
+				printf("Sending file error: %s(%d)\n", strerror(errno), errno);
+			} else {
+				sent_size += err;
+			}
+		}
+	} while(sent_size);
+
+	return 0;
 }
-- 
2.20.1