add example and readme

3 files changed, 161 insertions, 0 deletions

diff --git a/test/.gitignore b/test/.gitignore
index 9b5c5f5..b514e8d 100644
--- a/test/.gitignore
+++ b/test/.gitignore
@@ -1,3 +1,4 @@
 test_msg
 test_stream
+test_network
 Makefile
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 7af1f87..f84384d 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -25,3 +25,6 @@ target_link_libraries(test_msg salticidae_static)
 
 add_executable(test_stream test_stream.cpp)
 target_link_libraries(test_stream salticidae_static)
+
+add_executable(test_network test_network.cpp)
+target_link_libraries(test_network salticidae_static)
diff --git a/test/test_network.cpp b/test/test_network.cpp
new file mode 100644
index 0000000..da72b93
--- /dev/null
+++ b/test/test_network.cpp
@@ -0,0 +1,157 @@
+/**
+ * Copyright (c) 2018 Cornell University.
+ *
+ * Author: Ted Yin <tederminant@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <cstdio>
+#include <string>
+
+#include "salticidae/msg.h"
+#include "salticidae/event.h"
+#include "salticidae/network.h"
+#include "salticidae/stream.h"
+
+using salticidae::NetAddr;
+using salticidae::DataStream;
+using salticidae::MsgNetwork;
+using salticidae::htole;
+using salticidae::letoh;
+using opcode_t = uint8_t;
+
+/** Hello Message. */
+struct MsgHello {
+    static const opcode_t opcode = 0x0;
+    DataStream serialized;
+    std::string name;
+    std::string text;
+    /** Defines how to serialize the msg. */
+    MsgHello(const std::string &name,
+            const std::string &text) {
+        serialized << htole((uint32_t)name.length());
+        serialized << name << text;
+    }
+    /** Defines how to parse the msg. */
+    MsgHello(DataStream &&s) {
+        uint32_t len;
+        s >> len;
+        len = letoh(len);
+        name = std::string((const char *)s.get_data_inplace(len), len);
+        len = s.size();
+        text = std::string((const char *)s.get_data_inplace(len), len);
+    }
+};
+
+/** Acknowledgement Message. */
+struct MsgAck {
+    static const opcode_t opcode = 0x1;
+    DataStream serialized;
+    MsgAck() {}
+    MsgAck(DataStream &&s) {}
+};
+
+using MsgNetworkByteOp = MsgNetwork<opcode_t>;
+
+struct MyNet: public MsgNetworkByteOp {
+    const std::string name;
+    const NetAddr peer;
+
+    MyNet(const salticidae::EventContext &ec,
+            const std::string name,
+            const NetAddr &peer):
+        MsgNetwork<opcode_t>(ec, 10, 1.0, 4096),
+        name(name),
+        peer(peer) {}
+
+    struct Conn: public MsgNetworkByteOp::Conn {
+        MyNet *get_net() { return static_cast<MyNet *>(get_pool()); }
+        salticidae::RcObj<Conn> self() {
+            return salticidae::static_pointer_cast<Conn>(
+                MsgNetworkByteOp::Conn::self());
+        }
+
+        void on_setup() override {
+            auto net = get_net();
+            if (get_mode() == ACTIVE)
+            {
+                printf("[%s] Connected, sending hello.\n",
+                        net->name.c_str());
+                /* send the first message through this connection */
+                net->send_msg(MsgHello(net->name, "Hello there!"), self());
+            }
+            else
+                printf("[%s] Passively connected, waiting for greetings.\n",
+                        net->name.c_str());
+        }
+        void on_teardown() override {
+            auto net = get_net();
+            printf("[%s] Disconnected, retrying.\n", net->name.c_str());
+            /* try to reconnect to the same address */
+            net->connect(get_addr());
+        }
+    };
+    using conn_t = salticidae::RcObj<Conn>;
+
+    salticidae::ConnPool::Conn *create_conn() override {
+        return new Conn();
+    }
+};
+
+
+void on_receive_hello(MsgHello &&msg, MyNet::conn_t conn) {
+    auto net = conn->get_net();
+    printf("[%s] %s says %s\n",
+            net->name.c_str(),
+            msg.name.c_str(), msg.text.c_str());
+    /* send acknowledgement */
+    net->send_msg(MsgAck(), conn);
+}
+
+void on_receive_ack(MsgAck &&msg, MyNet::conn_t conn) {
+    auto net = conn->get_net();
+    printf("[%s] the peer knows\n", net->name.c_str());
+}
+
+salticidae::EventContext ec;
+NetAddr alice_addr("127.0.0.1:1234");
+NetAddr bob_addr("127.0.0.1:1235");
+
+int main() {
+    /* test two nodes */
+    MyNet alice(ec, "Alice", bob_addr);
+    MyNet bob(ec, "Bob", alice_addr);
+
+    /* register the message handler */
+    alice.reg_handler(on_receive_hello);
+    alice.reg_handler(on_receive_ack);
+    bob.reg_handler(on_receive_hello);
+    bob.reg_handler(on_receive_ack);
+
+    alice.listen(alice_addr);
+    bob.listen(bob_addr);
+
+    /* first attempt */
+    alice.connect(bob_addr);
+    bob.connect(alice_addr);
+
+    ec.dispatch();
+    return 0;
+}