From 9f294eb2e0ae0bed8120fc34fd9782f2f0a9ac74 Mon Sep 17 00:00:00 2001 From: Determinant Date: Mon, 3 Jun 2019 17:30:01 -0400 Subject: WIP: C bindings --- test/test_msgnet_c.c | 171 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 171 insertions(+) create mode 100644 test/test_msgnet_c.c (limited to 'test') diff --git a/test/test_msgnet_c.c b/test/test_msgnet_c.c new file mode 100644 index 0000000..1098e19 --- /dev/null +++ b/test/test_msgnet_c.c @@ -0,0 +1,171 @@ +/** + * Copyright (c) 2018 Cornell University. + * + * Author: Ted Yin + * + * 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 +#include + +#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; + +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(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; +} -- cgit v1.2.3