AWS上的领域对象服务器（ROS）：如何发出有效的Websocket请求？

Question

设置：

我使用的是iOS 11和Xcode 9

第一次测试领域，并考虑作为Firebase的替代品。基于提供的东京公共AMI，在AWS EC中安装并运行了测试服务器。仪表板工作，从Swift代码工作中添加用户，甚至创建领域。

问题:

无法写入，在使用“领域：//”时获取“连接[1]：SSL握手失败：输入过早结束”，或在将“领域：//”用作同步服务器URL时获取“连接[1]：写入失败：输入结束”。尝试通过谷歌搜索SSL错误，但未找到任何匹配项。

从Realm网站上的教程制作开始，很多代码都发生了变化，所以我不得不临时修改，可能是有一些非常明显的错误，或者可能是我的服务器配置？

这是我的代码。

var realm: Realm?
    if let serverURL = URL(string: "http://13.112.252.130:9080"){
        let usernameCredentials = SyncCredentials.usernamePassword(username: "raul", password: "abc123", register: false)
        SyncUser.logIn(with: usernameCredentials,
                       server: serverURL) { user, error in
                        if let user = user {
                            print("User \(user) is admin: \(user.isAdmin)")
                            if let syncServerURL = URL(string: "realms://13.112.252.130:9080/~/addressBook") {
                                let config = Realm.Configuration(syncConfiguration: SyncConfiguration(user: user, realmURL: syncServerURL))
                                realm = try? Realm(configuration: config)
                                print("Successfully connected to realm!")
                                let contact = Contact()
                                contact.name = "John Doe"
                                contact.phone = "123456789"
                                contact.email = "[e-mail]"
                                if let realm = realm {
                                    self.contactResults = realm.objects(Contact.self).sorted(byKeyPath: "name", ascending: true)
                                    try? realm.write {
                                    realm.add(contact)
                                    print("wrote to realm!")
                                }
                                }

                            } else if let error = error {
                                print("Error: \(error.localizedDescription)")
                            }
                        }
        }
    }

这是带有“realms://”的错误日志，它进入了一个无限循环：

2017-09-02 07:37:18.223475+0700 RealmAdressbook[7253:3703339] refreshPreferences: HangTracerEnabled: 1
2017-09-02 07:37:18.223532+0700 RealmAdressbook[7253:3703339] refreshPreferences: HangTracerDuration: 500
2017-09-02 07:37:18.223551+0700 RealmAdressbook[7253:3703339] refreshPreferences: ActivationLoggingEnabled: 0 ActivationLoggingTaskedOffByDA:0
User is admin: false
Successfully connected to realm!
2017-09-02 07:37:19.319628+0700 RealmAdressbook[7253:3703453] Sync: Opening Realm file: /var/mobile/Containers/Data/Application/2A52579D-4863-4FC3-88DA-31F2EC2549E5/Documents/realm-object-server/64e042b0-d753-4ebf-b5a4-de8f8f56142f/realms%3A%2F%2F13.112.252.130%3A9080%2F%7E%2FaddressBook
2017-09-02 07:37:19.320459+0700 RealmAdressbook[7253:3703453] Sync: Connection[1]: Session[1]: Starting session for '/var/mobile/Containers/Data/Application/2A52579D-4863-4FC3-88DA-31F2EC2549E5/Documents/realm-object-server/64e042b0-d753-4ebf-b5a4-de8f8f56142f/realms%3A%2F%2F13.112.252.130%3A9080%2F%7E%2FaddressBook'
2017-09-02 07:37:19.320591+0700 RealmAdressbook[7253:3703453] Sync: Connection[1]: Resolving '13.112.252.130:9080'
2017-09-02 07:37:19.322722+0700 RealmAdressbook[7253:3703453] Sync: Connection[1]: Connecting to endpoint '13.112.252.130:9080' (1/1)
2017-09-02 07:37:19.458271+0700 RealmAdressbook[7253:3703453] Sync: Connection[1]: Connected to endpoint '13.112.252.130:9080' (from xxxxxxxxxxxxx)
2017-09-02 07:37:19.597335+0700 RealmAdressbook[7253:3703453] Sync: Connection[1]: SSL handshake failed: Premature end of input
2017-09-02 07:37:19.597609+0700 RealmAdressbook[7253:3703453] Sync: Connection[1]: Connection closed due to error

这是我使用“realm://”时的日志，也会进入循环：

2017-09-02 07:41:00.362705+0700 RealmAdressbook[7263:3705293] refreshPreferences: HangTracerEnabled: 1
2017-09-02 07:41:00.362762+0700 RealmAdressbook[7263:3705293] refreshPreferences: HangTracerDuration: 500
2017-09-02 07:41:00.362782+0700 RealmAdressbook[7263:3705293] refreshPreferences: ActivationLoggingEnabled: 0 ActivationLoggingTaskedOffByDA:0
User is admin: false
Successfully connected to realm!
wrote to realm!
2017-09-02 07:41:01.524168+0700 RealmAdressbook[7263:3705496] Sync: Opening Realm file: /var/mobile/Containers/Data/Application/36B5D609-1E8B-48FD-B20A-F5DF4EB21384/Documents/realm-object-server/64e042b0-d753-4ebf-b5a4-de8f8f56142f/realm%3A%2F%2F13.112.252.130%3A9080%2F%7E%2FaddressBook
2017-09-02 07:41:01.525491+0700 RealmAdressbook[7263:3705496] Sync: Connection[1]: Session[1]: Starting session for '/var/mobile/Containers/Data/Application/36B5D609-1E8B-48FD-B20A-F5DF4EB21384/Documents/realm-object-server/64e042b0-d753-4ebf-b5a4-de8f8f56142f/realm%3A%2F%2F13.112.252.130%3A9080%2F%7E%2FaddressBook'
2017-09-02 07:41:01.526011+0700 RealmAdressbook[7263:3705496] Sync: Connection[1]: Resolving '13.112.252.130:9080'
2017-09-02 07:41:01.527816+0700 RealmAdressbook[7263:3705496] Sync: Connection[1]: Connecting to endpoint '13.112.252.130:9080' (1/1)
2017-09-02 07:41:01.663245+0700 RealmAdressbook[7263:3705496] Sync: Connection[1]: Connected to endpoint '13.112.252.130:9080' (from '192.168.1.4:59862')
2017-09-02 07:41:01.819181+0700 RealmAdressbook[7263:3705496] Sync: Connection[1]: Writing failed: End of input
2017-09-02 07:41:01.819320+0700 RealmAdressbook[7263:3705496] Sync: Connection[1]: Connection closed due to 
error

来自服务器的日志我的请求头似乎有问题，如何修复？

proxy: [syncProxy] internal error: Error: socket hang up at createHangUpError (httpclient.js:253:15) at Socket.socketOnEnd (httpclient.js:345:23) at emitNone (events.js:91:20) at Socket.emit (events.js:185:7) at endReadableNT (streamreadable.js:974:12) at combinedTickCallback (internal/process/nexttick.js:80:11) at process.tickCallback (internal/process/nexttick.js:104:9).
1:51:33 AMinfo
sync: HTTP Connection[714]: Connection closed due to error
1:51:33 AMerror
sync: HTTP Connection[714]: Check the proxy configuration and make sure that the HTTP request is a valid Websocket request. The header values are case sensitive
1:51:33 AMerror
sync: HTTP Connection[714]: The HTTP request with the error is: GET /realm-object-server HTTP/1.1
connection: Upgrade
host: 13.112.252.130
sec-websocket-key: 7FDPgyFxq/GT1tKfIMJNcg==
sec-websocket-protocol: io.realm.sync.19
sec-websocket-version: 13
upgrade: websocket
x-realm-access-token: eyJhY2Nlc3MiOlsiZG93bmxvYWQiLCJ1cGxvYWQiLCJtYW5hZ2UiXSwiYXBwX2lkIjoiY29tLmJhbWJhbWxhYnMuUmVhbG1BZHJlc3Nib29rIiwiZXhwaXJlcyI6MTUwNDM3ODg4NiwiaWQiOiJlMjI0YTM5NmU4YTI0OWU1ODlhNWQ4OWM0ODczOTMzOCIsImlkZW50aXR5IjoiNjE1ZWUxMjU0MDA4ZDA5MWJiYTc1MjU4YTAyZWViZjYiLCJwYXRoIjoiLzYxNWVlMTI1NDAwOGQwOTFiYmE3NTI1OGEwMmVlYmY2L215UmVhbG0ifQ==:hyX8GtVHMIBho3Zw6pZfp9Gnl6O0C0Rl73V0EdX/a4ZWXMxcySFZmWbs0CxmjnpZUDNnFDK3PpXspN1YnGu2c5ByuRIpgpT7hkzwAil2EQzFeKFycYXwTbsp3a6X9npHETjxUfe9QWIIA5drz3VRPUI+0Tj+qspjbyPBcMhL6ZH3A8ubZHOIpjJpxRWGZbghdznf0g71Ta0SDyCYT4GB+fHuddzUH7RZgLkzBfoyIdJyfGccwVi1Qe/c0GTPzkH12TSyzHSwx9PnGadl1vBRuPci6fs+TE03rx6Gy7v73I37JpVVsiPm1omMG7FBdi60iQYQvItiycnle/rvb6+u3w==
x-realm-path: /615ee1254008d091bba75258a02eebf6/myRealm

1:51:33 AMerror
sync: HTTP Connection[714]: There must be a header of the form 'Sec-WebSocket-Protocol: io.realm.protocol'
1:51:33 AMinfo
sync: HTTP Connection[714]: Received: Sync HTTP request(protocol_version=-1)

Answer 1

SSL情况和非SSL情况下的故障原因可能不同。

对于SSL情况，您确定要使用端口9080吗？通常领域使用9443。

对于非SSL的情况，问题是头显然已经被中间代理重写了。服务器接收到的请求与预期的不同。我们可以在Realm解决这个问题。您现在唯一能做的就是更改代理。谢谢你的报道。

编辑回答：对于非SSL情况，服务器无法识别头的原因是您使用的是旧版本的服务器。似乎您升级了客户端而没有升级服务器。尝试使用最新版本的服务器。