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sx/examples/32-http-server.sx
2026-02-18 16:31:06 +02:00

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// HTTP server example (macOS only)
#import "modules/std.sx";
#import "modules/socket.sx";
// --- Logger ---
Logger :: struct {
prefix: string;
count: s64;
}
log :: (logger: *Logger, msg: string) {
logger.count += 1;
print("[{}] {}\n", logger.prefix, msg);
}
main :: () -> s32 {
PORT :: 8080;
fd := socket(AF_INET, SOCK_STREAM, 0);
if fd < 0 {
print("error: socket()\n");
return 1;
}
opt : s32 = 1;
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, @opt, 4);
addr := SockAddr.{ sin_len = 16, sin_family = 2, sin_port = htons(PORT) };
if bind(fd, @addr, 16) < 0 {
print("error: bind()\n");
return 1;
}
if listen(fd, 10) < 0 {
print("error: listen()\n");
return 1;
}
print("listening on http://localhost:{}\n", PORT);
arena := arena_create(65536);
logger := Logger.{ prefix = "http", count = 0 };
while true {
client := accept(fd, null, null);
if client < 0 { continue; }
push Context.{ arena = @arena, data = xx @logger } {
handle(client);
}
arena_reset(@arena);
close(client);
}
arena_destroy(@arena);
close(fd);
0;
}
handle :: (client: s32) {
// Read request
buf : [4096]u8 = ---;
read(client, buf, buf.len);
body :: "<html><body><h1>Hello from sx!</h1></body></html>";
response :: format("HTTP/1.1 200 OK\r
Content-Type: text/html\r
Connection: close\r
Content-Length: {}\r
\r\n{}", body.len, body);
write(client, response, response.len);
logger : *Logger = xx context.data;
log(logger, format("served request #{}", logger.count + 1));
}