main.zig

const std = @import("std");
const net = std.net;

pub fn main() !void {
    const address = try net.Address.parseIpAndPort("1.1.1.1:80");
    const host_name = "1.1.1.1";
    var stream = try std.net.tcpConnectToAddress(address);
    var buffer: [1024]u8 = undefined;

    const writer = stream.writer(&buffer);
    var output = writer.interface;

    try output.print("GET / HTTP/1.0\r\nHost: {s}\r\n\r\n", .{host_name});
    try output.flush();
}

output.txt

thread 1852807 panic: reached unreachable code
/nix/store/60r66ghylp151rz650srgf3f863sslrv-zig-0.15.2/lib/zig/std/posix.zig:6176:26: 0x100c9ed5b in sendmsg (main)
                .BADF => unreachable, // always a race condition
                         ^
/nix/store/60r66ghylp151rz650srgf3f863sslrv-zig-0.15.2/lib/zig/std/net.zig:2298:50: 0x100c9d8fb in drain (main)
                return io_w.consume(posix.sendmsg(w.file_writer.file.handle, &msg, flags) catch |err| {
                                                 ^
/nix/store/60r66ghylp151rz650srgf3f863sslrv-zig-0.15.2/lib/zig/std/Io/Writer.zig:316:39: 0x100c1a6df in defaultFlush (main)
    while (w.end != 0) _ = try drainFn(w, &.{""}, 1);
                                      ^
/nix/store/60r66ghylp151rz650srgf3f863sslrv-zig-0.15.2/lib/zig/std/Io/Writer.zig:310:26: 0x100c3a08f in flush (main)
    return w.vtable.flush(w);
                         ^
/private/tmp/http-test/src/main.zig:14:21: 0x100c995eb in main (main)
    try output.flush();
                    ^
/nix/store/60r66ghylp151rz650srgf3f863sslrv-zig-0.15.2/lib/zig/std/start.zig:627:37: 0x100c9a4cb in main (main)
            const result = root.main() catch |err| {
                                    ^
???:?:?: 0x1936b5d53 in ??? (???)
???:?:?: 0x0 in ??? (???)