Check Whether a Socket Is Writable

See more Socket/SSL/TLS Examples

Demonstrates Socket.CheckWriteable, which waits for the connected socket to become writable. It returns 1 if writable, 0 if it did not become writable before the timeout, or -1 on error.

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    const socket = try chilkat.Socket.init();
    defer socket.deinit();

    // Connect to the server using TLS.
    const b_tls = true;
    const max_wait_ms = 5000;
    socket.connect("example.com", 5000, b_tls, max_wait_ms) catch {
        std.debug.print("{s}\n", .{try socket.getLastErrorText(alloc)});
        return;
    };

    // Wait up to 5 seconds for the socket to become writable.  Returns 1 if writable, 0 if it did not
    // become writable before the timeout, or -1 on error.
    const writable = socket.checkWriteable(5000);
    if (writable < 0) {
        std.debug.print("{s}\n", .{try socket.getLastErrorText(alloc)});
        return;
    }

    if (writable != 1) {
        std.debug.print("The socket did not become writable before the timeout.\n", .{});
        return;
    }

    std.debug.print("The socket is writable.\n", .{});
}