tests: add tcp test

Simple echo server on the now famous port 10000.

build.mk

@@ -21,6 +21,7 @@ CXXFLAGS += -I $(src)
 CXXFLAGS += -Wl,--no-as-needed 
 
 tests = tests/test-reactor tests/fileiotest tests/virtiotest tests/l3_test tests/ip_test tests/timertest
+tests += tests/tcp_test
 
 link = mkdir -p $(@D) && $(CXX) $(CXXFLAGS) -o $@ $^
 compile = mkdir -p $(@D) && $(CXX) $(CXXFLAGS) -c -o $@ $<
@@ -51,6 +52,8 @@ tests/l3_test: tests/l3_test.o net/virtio.o core/reactor.o net/net.o net/ip.o ne
 
 tests/ip_test: tests/ip_test.o net/virtio.o core/reactor.o net/net.o net/ip.o net/arp.o net/ethernet.o
 
+tests/tcp_test: tests/tcp_test.o net/virtio.o core/reactor.o net/net.o net/ip.o net/arp.o net/ethernet.o
+
 tests/timertest: tests/timertest.o core/reactor.o
 
 -include $(shell find -name '*.d')

tests/tcp_test.cc

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2014 Cloudius Systems, Ltd.
+ */
+
+#include "net/ip.hh"
+#include "net/virtio.hh"
+
+using namespace net;
+
+struct tcp_test {
+    ipv4& inet;
+    using tcp = net::tcp<ipv4_traits>;
+    struct connection {
+        tcp::connection tcp_conn;
+        explicit connection(tcp::connection tc) : tcp_conn(std::move(tc)) {}
+        void run() {
+            tcp_conn.receive().then([this] (packet p) {
+                tcp_conn.send(std::move(p));
+                run();
+            });
+        }
+    };
+    tcp_test(ipv4& inet) : inet(inet) {}
+    void run() {
+        inet.get_tcp().listen(10000).then([this] (tcp::connection conn) {
+            (new connection(std::move(conn)))->run();
+            run();
+        });
+    }
+};
+
+int main(int ac, char** av) {
+    auto vnet = create_virtio_net_device("tap0");
+    interface netif(std::move(vnet));
+    netif.run();
+    ipv4 inet(&netif);
+    inet.set_host_address(ipv4_address(0xc0a87a02));
+    tcp_test tt(inet);
+    the_reactor.start().then([&tt] { tt.run(); });
+    the_reactor.run();
+}
+
+