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authorDeterminant <[email protected]>2019-06-03 17:30:01 -0400
committerDeterminant <[email protected]>2019-06-03 17:30:01 -0400
commit9f294eb2e0ae0bed8120fc34fd9782f2f0a9ac74 (patch)
treed5005c9888874bd2b169fcd51418a3fab36fe631 /test/test_msgnet_c.c
parent9ec5a371f5c05fda8ddeac3470be6fc5c67d44e9 (diff)
WIP: C bindings
Diffstat (limited to 'test/test_msgnet_c.c')
-rw-r--r--test/test_msgnet_c.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/test/test_msgnet_c.c b/test/test_msgnet_c.c
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+/**
+ * Copyright (c) 2018 Cornell University.
+ *
+ * Author: Ted Yin <[email protected]>
+ *
+ * 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 <stdio.h>
+#include <string.h>
+
+#include "salticidae/event.h"
+#include "salticidae/network.h"
+#include "salticidae/stream.h"
+
+/** Hello Message. */
+const uint8_t msg_hello_opcode = 0x0;
+typedef struct MsgHello {
+ const char *name;
+ const char *text;
+} MsgHello;
+/** Defines how to serialize the msg. */
+datastream_t msg_hello_serialize(const char *name, const char *text) {
+ datastream_t *serialized = msgnet_
+ serialized << htole((uint32_t)name.length());
+ serialized << name << text;
+}
+
+/** Defines how to parse the msg. */
+MsgHello MsgHello(DataStream &&s) {
+ MsgHello res;
+ uint32_t len;
+ s >> len;
+ len = letoh(len);
+ res.name = std::string((const char *)s.get_data_inplace(len), len);
+ len = s.size();
+ res.text = std::string((const char *)s.get_data_inplace(len), len);
+ return res;
+}
+
+/** Acknowledgement Message. */
+struct MsgAck {
+ static const uint8_t opcode = 0x1;
+ DataStream serialized;
+ MsgAck() {}
+ MsgAck(DataStream &&s) {}
+};
+
+const uint8_t MsgHello::opcode;
+const uint8_t MsgAck::opcode;
+
+using MsgNetworkByteOp = MsgNetwork<uint8_t>;
+
+typedef struct MyNet {
+ msgnetwork_t *net;
+ const std::string name;
+ const NetAddr peer;
+} MyNet;
+
+void msg_hello_handler(const msg_t *msg, const msgnetwork_conn_t *conn) {
+
+}
+
+void msg_ack_handler(const msg_t *msg, const msgnetwork_conn_t *conn) {
+}
+
+void alice_conn_handler(const msgnetwork_conn_t *conn, bool connected) {
+ if (connected)
+ {
+ if (conn->get_mode() == ConnPool::Conn::ACTIVE)
+ {
+ puts("[alice] Connected, sending hello.");
+ /* send the first message through this connection */
+ msgnetwork_send_msg(alice,
+ msg_hello_serialize("alice", "Hello there!"), conn);
+ }
+ else
+ printf("[alice] Accepted, waiting for greetings.\n",
+ this->name.c_str());
+ }
+ else
+ {
+ printf("[alice] Disconnected, retrying.\n", this->name.c_str());
+ /* try to reconnect to the same address */
+ connect(conn->get_addr());
+ }
+}
+
+MyNet mynet_new(const salticidae::EventContext &ec,
+ const char *name,
+ const netaddr_t *peer) {
+ MyNet res;
+ const msgnetwork_config_t *netconfig = msgnetwork_config_new();
+ res.net = msgnetwork_new(ec, netconfig);
+ res.name = name;
+ res.peer = peer;
+
+ /* message handler could be a bound method */
+ reg_handler(salticidae::generic_bind(&MyNet::on_receive_hello, this, _1, _2));
+
+ reg_conn_handler([this](const ConnPool::conn_t &conn, bool connected) {
+ });
+ }
+
+ void on_receive_hello(MsgHello &&msg, const MyNet::conn_t &conn) {
+ printf("[%s] %s says %s\n",
+ name.c_str(),
+ msg.name.c_str(), msg.text.c_str());
+ /* send acknowledgement */
+ send_msg(MsgAck(), conn);
+ }
+};
+
+
+void on_receive_ack(MsgAck &&msg, const MyNet::conn_t &conn) {
+ auto net = static_cast<MyNet *>(conn->get_net());
+ printf("[%s] the peer knows\n", net->name.c_str());
+}
+
+int main() {
+ salticidae::EventContext ec;
+ NetAddr alice_addr("127.0.0.1:12345");
+ NetAddr bob_addr("127.0.0.1:12346");
+
+ /* test two nodes in the same main loop */
+ MyNet alice(ec, "Alice", bob_addr);
+ MyNet bob(ec, "Bob", alice_addr);
+
+ /* message handler could be a normal function */
+ alice.reg_handler(on_receive_ack);
+ bob.reg_handler(on_receive_ack);
+
+ /* start all threads */
+ alice.start();
+ bob.start();
+
+ /* accept incoming connections */
+ alice.listen(alice_addr);
+ bob.listen(bob_addr);
+
+ /* try to connect once */
+ alice.connect(bob_addr);
+ bob.connect(alice_addr);
+
+ /* the main loop can be shutdown by ctrl-c or kill */
+ auto shutdown = [&](int) {ec.stop();};
+ salticidae::SigEvent ev_sigint(ec, shutdown);
+ salticidae::SigEvent ev_sigterm(ec, shutdown);
+ ev_sigint.add(SIGINT);
+ ev_sigterm.add(SIGTERM);
+
+ /* enter the main loop */
+ ec.dispatch();
+ return 0;
+}