1 files changed, 47 insertions, 0 deletions
diff --git a/03_exercise/echo_server/client.c b/03_exercise/echo_server/client.c
new file mode 100644
index 0000000..a664221
--- /dev/null
+++ b/03_exercise/echo_server/client.c
@@ -0,0 +1,47 @@
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+static inline void die(const char* msg)
+{
+	perror(msg);
+	exit(-1);
+}
+
+int main()
+{
+	struct sockaddr_in addr = {
+		.sin_family = AF_INET,
+		.sin_port = htons(8000),
+		.sin_addr.s_addr = inet_addr("127.0.0.1")
+	};
+	char buf[256];
+	int cfd;
+	
+	if ((cfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+		die("Couldn't open the socket");
+	
+	if (connect(cfd, (struct sockaddr*) &addr, sizeof(addr)) < 0)
+		die("Couldn't connect to socket");
+	
+	for (int i = 0; i < 5; ++i)
+	{
+		if (write(cfd, "Ping", 4) < 0)
+			die("Couldn't send message");
+		
+		printf("[send] Ping\n");
+		
+		if (read(cfd, buf, sizeof(buf)) < 0)
+			die("Couldn't receive message");
+		
+		printf("[recv] %s\n", buf);
+	}
+	
+	close(cfd);
+	return 0;
+}