Zig 0.15.2 で TCP クライアント

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Zig 0.15.2 で TCP クライアント

zig run client.zig

client.zig

const std = @import("std");

fn stripCr(line: []const u8) []const u8 {
    if (line.len > 0 and line[line.len - 1] == '\r') return line[0 .. line.len - 1];
    return line;
}

pub fn main() !void {
    var gpa: std.heap.DebugAllocator(.{}) = .init;
    defer _ = gpa.deinit();
    const allocator = gpa.allocator();

    const stream = try std.net.tcpConnectToHost(allocator, "localhost", 8080);
    defer stream.close();

    const req =
        "GET / HTTP/1.1\r\n" ++
        "Host: localhost\r\n" ++
        "Connection: close\r\n" ++
        "\r\n";

    // --- write request ---
    var wbuf: [4096]u8 = undefined;
    var bw = stream.writer(&wbuf);
    try bw.interface.writeAll(req);
    try bw.interface.flush();

    // --- read response (line-based) ---
    var rbuf: [4096]u8 = undefined;
    var br = stream.reader(&rbuf);
    const r = br.interface();

    while (try r.takeDelimiter('\n')) |raw| {
        const line = stripCr(raw);
        std.debug.print("{s}\n", .{line});
    }
}