lxip: simple udp client for testing

Ref #114

repos/dde_linux/src/test/lxip/udp_client/main.cc

@@ -0,0 +1,88 @@
+/*
+ * \brief  Minimal datagram client demonstration using socket API
+ * \author Martin Stein
+ * \date   2016-08-17
+ */
+
+/*
+ * Copyright (C) 2016 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+/* Genode includes */
+#include <base/printf.h>
+
+/* libc includes */
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <timer_session/connection.h>
+#include <os/config.h>
+
+using namespace Genode;
+
+int main(void)
+{
+	int s;
+	static Timer::Connection _timer;
+	_timer.msleep(2000);
+	log("Create new socket ...");
+	if((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+		error("No socket available!");
+		return -1;
+	}
+	log("Now, I will bind ...");
+	struct sockaddr_in in_addr;
+	in_addr.sin_family = AF_INET;
+	in_addr.sin_port = htons(8765);
+	in_addr.sin_addr.s_addr = INADDR_ANY;
+	if(bind(s, (struct sockaddr*)&in_addr, sizeof(in_addr))) {
+		error("bind failed!");
+		return -1;
+	}
+	enum { ADDR_STR_SZ = 16 };
+	char serv_addr[ADDR_STR_SZ] = { 0 };
+	Xml_node libc_node = config()->xml_node().sub_node("libc");
+	try { libc_node.attribute("server_ip").value(serv_addr, ADDR_STR_SZ); }
+	catch(...) {
+		error("Missing \"server_ip\" attribute.");
+		throw Xml_node::Nonexistent_attribute();
+	}
+	unsigned port = 0;
+	try { libc_node.attribute("server_port").value(&port); }
+	catch (...) {
+		error("Missing \"server_port\" attribute.");
+		throw Xml_node::Nonexistent_attribute();
+	}
+	log("Start the client loop ...");
+	for(int j = 0; j != 5; ++j) {
+		_timer.msleep(2000);
+		struct sockaddr_in addr;
+		addr.sin_family = AF_INET;
+		socklen_t len = sizeof(addr);
+		addr.sin_port = htons(port);
+		addr.sin_family = AF_INET;
+		addr.sin_addr.s_addr = inet_addr(serv_addr);
+		char buf[1024];
+		Genode::snprintf(buf, sizeof(buf), "UDP server at %s:%u", serv_addr, port);
+		ssize_t n = sizeof(buf);
+		n = sendto(s, buf, n, 0, (struct sockaddr*)&addr, len);
+		n = recvfrom(s, buf, sizeof(buf), 0, (struct sockaddr*)&addr, &len);
+		if (n == 0) {
+			warning("Invalid reply!");
+			continue;
+		}
+		if (n < 0) {
+			error("Error ", n);
+			break;
+		}
+		log("Received \"", String<64>(buf), " ...\"");
+	}
+	_timer.msleep(2000);
+	return 0;
+}

repos/dde_linux/src/test/lxip/udp_client/target.mk

@@ -0,0 +1,3 @@
+TARGET   = test-lxip_udp_client
+LIBS     = libc libc_lxip config
+SRC_CC   = main.cc