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libipc-old
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Add some test/example programs.

master
Philippe Pittoli 2022-12-24 18:57:51 +01:00
parent 1a83b3c824
commit bc0fe07990
2 changed files with 131 additions and 0 deletions

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const std = @import("std");
const hexdump = @import("./hexdump.zig");
const testing = std.testing;
const net = std.net;
const fmt = std.fmt;
const print = std.debug.print;
const P = std.ArrayList(std.os.pollfd);
fn create_service() !void {
const config = .{.safety = true};
var gpa = std.heap.GeneralPurposeAllocator(config){};
defer _ = gpa.deinit();
const allocator = gpa.allocator();
var p = P.init(allocator);
defer p.deinit();
try p.append(.{.fd = 8, .events = 0, .revents = 0});
for(p.items) |i| { print("fd: {}\n", .{i.fd}); }
}
pub fn main() !u8 {
try create_service();
return 0;
}

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const std = @import("std");
const hexdump = @import("./hexdump.zig");
const testing = std.testing;
const net = std.net;
const os = std.os;
const fmt = std.fmt;
const print = std.debug.print;
// const config = .{.safety = true};
// var gpa = std.heap.GeneralPurposeAllocator(config){};
// defer _ = gpa.deinit();
// const allocator = gpa.allocator();
fn disconnect(stream: *net.StreamServer) void { stream.close(); }
fn server_init() net.StreamServer {
// no reuse_address and default kernel_backlog
return net.StreamServer.init(.{});
}
fn remove_unix_socket(path: []const u8) void {
std.fs.deleteFileAbsolute(path) catch |err| switch(err) {
else => { print("error: {}\n", .{err}); }
};
}
fn waiting_for_connection(stream: *net.StreamServer
, path: []const u8) !net.StreamServer.Connection {
var address = try net.Address.initUnix(path);
try stream.listen(address);
// const linux = os.linux;
// var tfd = try os.timerfd_create(linux.CLOCK.MONOTONIC, linux.TFD.CLOEXEC);
// defer os.close(tfd);
// // Fire event 10_000_000ns = 10s after the os.timerfd_settime call.
// var sit: linux.itimerspec = .{ .it_interval = .{ .tv_sec = 0, .tv_nsec = 0 }
// , .it_value = .{ .tv_sec = 0, .tv_nsec = 10 * (1000 * 1000 * 1000) } };
// print("before os.timerfd_settime\n", .{});
// try os.timerfd_settime(tfd, 0, &sit, null);
// var fds: [2]os.pollfd =
// .{ .{ .fd = tfd, .events = os.linux.POLL.IN, .revents = 0 }
// , .{ .fd = lfd, .events = os.linux.POLL.IN, .revents = 0 }};
// var count = try os.poll(&fds, -1); // -1 => infinite waiting
var waiting_duration: i32 = 10 * 1000; // in ms
print("waiting for 10 seconds, tops\n", .{});
var ssockfd = stream.sockfd; // actual listener (server)
var lfd: os.socket_t = undefined;
if (ssockfd) |sfd| { lfd = sfd; }
else { return error.Undefined; }
print("Let's wait for an event (either stdin or unix socket)\n", .{});
var count: usize = undefined;
while(true) {
var fds: [2]os.pollfd =
.{.{ .fd = 0, .events = os.linux.POLL.IN, .revents = 0 }
, .{ .fd = lfd, .events = os.linux.POLL.IN, .revents = 0 }};
print("fds: {any}\n", .{fds});
count = try os.poll(&fds, waiting_duration);
if (count == 0) { print("no client, still waiting\n", .{}); continue; }
print("fds NOW: {any}\n", .{fds});
break;
}
return stream.accept();
}
fn receive_msg(stream: net.Stream) !void {
var buffer: [1000]u8 = undefined;
var fbs = std.io.fixedBufferStream(&buffer);
var reader = fbs.reader();
_ = try stream.read(buffer[0..]);
const msg_type = try reader.readByte();
const msg_len = try reader.readIntBig(u32);
const msg_payload = buffer[5..5+msg_len];
print ("type: {}, len {}, content: {s}\n"
, .{msg_type, msg_len, msg_payload});
}
pub fn main() !u8 {
var path = "/tmp/.TEST_USOCK";
print("Init UNIX server to {s}...\n", .{path});
var stream = server_init();
defer stream.deinit();
defer remove_unix_socket(path);
// TODO
print("Waiting for a connection...\n", .{});
var connection = try waiting_for_connection(&stream, path);
print("Someone is connected! Receiving a message...\n", .{});
try receive_msg(connection.stream);
print("Disconnection...\n", .{});
disconnect(&stream);
print("Disconnected!\n", .{});
return 0;
}