我正在尝试将任何HTTP请求重定向到我的服务器而不是HTTPS。
ELB正在侦听端口80并将所有请求转发到我的应用程序上的端口8088。然后,应用程序发送301 Moved Permanently响应重定向到同一个URL,但任何端口都被剥离,并且“https://”前置。这会导致客户端通过HTTPS重新请求URL。
当我在本地测试它时工作正常,但当我将它部署到Elastic Load Balancer后面的EC2时,我会收到502 Bad Gateway。服务器正在接收请求,并且似乎正在正确发送重定向(正如我所说,当我直接点击服务器时,它不起作用,而不是通过负载均衡器)。
答案 0 :(得分:3)
事实证明,ELB非常挑剔它所认为的“有效”响应,并且如果它不满意将返回502 Bad Gateway。我通过确保来自我的服务器的响应具有以下标题来修复它:
例如。如果我在http://example.com
听我发回以下回复:
HTTP/1.1 301 Moved Permanently
Content-Type: */*; charset="UTF-8"
Location: https://example.com/
Content-Length: 0
这让ELB感到高兴,一切正常。
感兴趣,这是代码(Java,使用Simpleframework):
private static void startHttpsRedirector() throws IOException {
org.simpleframework.http.core.Container container = new org.simpleframework.http.core.Container() {
@Override
public void handle(Request request, Response response) {
Path path = request.getPath();
Query query = request.getQuery();
String rawHost = request.getValue("host");
System.out.println("Raw host: " + rawHost);
System.out.println("Raw path: " + path);
System.out.println("Raw query: " + query);
String host = rawHost.replaceFirst("\\:.*", "");
response.setStatus(Status.MOVED_PERMANENTLY);
String redirectTo = "https://" + host + path + (query.values().size() > 0 ? "?" + query : "");
System.out.println("redirectTo = " + redirectTo);
response.setContentType("*/*; charset=\"UTF-8\"");
response.setValue("Location", redirectTo);
response.setContentLength(0);
try {
response.commit();
response.close();
} catch (IOException e) {
e.printStackTrace();
}
}
};
Server server = new ContainerServer(container);
Connection connection = new SocketConnection(server);
SocketAddress address = new InetSocketAddress(8088);
connection.connect(address);
}
javascript中的相同代码可以在这里找到:https://gist.github.com/dhobbs/6164710