SignalR .Net客户端在设备上出现500服务器错误，在模拟器上工作正常 [英] SignalR .Net Client fails with 500 server error on device, on simulator works fine
问题描述
我正在尝试在我的应用中实现聊天，后端使用azure asp.net web api，前端使用xamarin ios。
I'm trying to implement a chat in my app, with azure asp.net web api on back-end and xamarin ios on front-end.
所以在后端我使用以下行配置我的集线器：
So on back-end I configure my hub with this lines:
var hubConfiguration = new HubConfiguration();
hubConfiguration.EnableDetailedErrors = true;
app.MapSignalR("/signalr", hubConfiguration);
这是我的枢纽来源：
[HubName("Chat")]
public class Chat : Hub
{
public Task JoinRoom(string roomName)
{
return Groups.Add(Context.ConnectionId, roomName);
}
public Task LeaveRoom(string roomName)
{
return Groups.Remove(Context.ConnectionId, roomName);
}
public Task Send(string message, string room)
{
return Clients.OthersInGroup(room).addMessage(message);
}
}
在xamarin ios客户端上一切都很简单：
on xamarin ios client everything is pretty simple too:
[Preserve(AllMembers=true)]
public class Msg
{
public string txt { get; set; }
}
public class Client
{
private readonly string _userName;
private readonly HubConnection _connection;
private readonly IHubProxy _proxy;
public event EventHandler<string> OnMessageReceived;
public Client(string userName)
{
_userName = userName;
_connection = new HubConnection("http://mywebsite.azurewebsites.net/");
_connection.ConnectionToken = NetManager.Instance.token.access_token;
_proxy = _connection.CreateHubProxy("Chat");
}
public async Task Connect()
{
await _connection.Start();
_proxy.On("messageReceived", (Msg platform, Msg message) =>
{
if (OnMessageReceived != null)
OnMessageReceived(this, string.Format("{0}: {1}", platform, message));
});
Send("Connected");
}
public Task Send(string message)
{
return _proxy.Invoke("Send", _userName, message);
}
}
所以，如果我从ios模拟器连接到服务器 - 它运行正常，但是当我尝试从我的ipad设备执行此操作时 - 它在内部服务器错误崩溃（'await _connection.Start（）;'）
So if I connect to server from ios simulator -- it works fine, but when I try to do this from my ipad device -- it crashes with internal server error on line ('await _connection.Start();')
我已经使用调试器检查了服务器，但没有异常，并且日志清晰。
I have already checked server with debugger, but no exceptions raised there, and logs are clear.
任何想法如何解决这个问题都非常有帮助！
Any ideas how to fix this will be very helpful!
[更新]
一些新的服务器日志：
[Upd] Some new server logs:
FROM SIMULATOR：
FROM SIMULATOR:
2015-09-27 03:29:39 IBYB GET / signalr / negotiate clientProtocol = 1.4& connectionData = [％7B％22Name％22：％22chat％22％7D ]&安培; connectionToken = 1qZRVTwNMqgGiI8iPpJ9oaPPCeLhHti3UXZR4HYsw2_7SGzOj44WRt8qzBFPRELZu6zk33-8uS7MNaq5K7N5qA2BR1IgzUf8CP9ihoGbjcwtXpFkdyh5gNqFBTHIRSgc2yto5_AOGUok_opd4B9FjAmOhgQlHF_myf28oBBYJxaXZ5iJOXFpI33k6pmQASRvveW-kBRX_89BF2mxAqFkZmVh3_MCo2gWP-NRZZFtMd8ZoxYHnGhyGNVsiiN1KaTHB1xAakP7HZjLpWg7SigfMvtKW0g3eXBsAr1wCJsAKIRjCaMAQFGV0BkKfYztRX vz4QbSXmIBXpKtviYamOqih4-LQJyywwVNh_Djt9H0wYIZmVO565G4ZNKzQfSkK6jMFQz6GfFf_OSlUJIz-0IXsQ7t2kP5VfqVrRu5KK7pyqtZJE5Y4HikRkh6DP8GIYBiXZclmBrpwWhUYVq5P3J2zhDYDNW2GiB95xnRjzXSjPQ&安培; NOCACHE = ccc35de3-5b7a-49ac-bf89-f15145d2634f&安培; X-ARR-LOG-ID = bce175df-8246-4e75-8887-707a7386e1ee 80 - 89.179.240.94 - - - ibyb.azurewebsites.net 200 0 0 942 1718 1093
2015-09-27 03:29:39 IBYB GET /signalr/negotiate clientProtocol=1.4&connectionData=[%7B%22Name%22:%22chat%22%7D]&connectionToken=1qZRVTwNMqgGiI8iPpJ9oaPPCeLhHti3UXZR4HYsw2_7SGzOj44WRt8qzBFPRELZu6zk33-8uS7MNaq5K7N5qA2BR1IgzUf8CP9ihoGbjcwtXpFkdyh5gNqFBTHIRSgc2yto5_AOGUok_opd4B9FjAmOhgQlHF_myf28oBBYJxaXZ5iJOXFpI33k6pmQASRvveW-kBRX_89BF2mxAqFkZmVh3_MCo2gWP-NRZZFtMd8ZoxYHnGhyGNVsiiN1KaTHB1xAakP7HZjLpWg7SigfMvtKW0g3eXBsAr1wCJsAKIRjCaMAQFGV0BkKfYztRXvz4QbSXmIBXpKtviYamOqih4-LQJyywwVNh_Djt9H0wYIZmVO565G4ZNKzQfSkK6jMFQz6GfFf_OSlUJIz-0IXsQ7t2kP5VfqVrRu5KK7pyqtZJE5Y4HikRkh6DP8GIYBiXZclmBrpwWhUYVq5P3J2zhDYDNW2GiB95xnRjzXSjPQ&noCache=ccc35de3-5b7a-49ac-bf89-f15145d2634f&X-ARR-LOG-ID=bce175df-8246-4e75-8887-707a7386e1ee 80 - 89.179.240.94 - - - ibyb.azurewebsites.net 200 0 0 942 1718 1093
来自设备：
2015-09-27 03:35:02 IBYB GET / signalr /谈判clientProtocol = 1.4&安培; connectionData = [％7B％7D]安培; connectionToken = YIZWqEe7AHvZHwb_aG7jOA9y_NFwUTBuLWSP46q8yh2rQMcjASbsp7VWlZ0Jzo_Z-n230IlhnOHZKm8kJr72ejLF-4LMopwyfZaWmsKNAy6cTd5uyU-76WoXsd2gpmpEJp8A0vMXe2HeLMIvH2Ckw6NIamEbu_uQvHRplkGeUhqGbTQU04dsU47ksebG_zh9XTtLGY9767CiwCYBg_Zk3aFgfrSvzPBiijfmIP9mUhz2ViAigyPeDeOE6WYRgtkkOIGMXGOoS5vQODHMUtiMaoV-W-jcCWtjHzzaObKNeX6zAsB0aJDc9_7fJAoBER7Jd6g0FOuEDvo8D95f1vA8j2SxbBgR4SFIzBDo_JfzO_TbPA6a2FR-ruw3yZHMidmcz3XQWb3vL5a0BPntzL9MPiVgvuhvkXfiRoDrRbzn2YXSqWrN-eEdjsF_WX-LMUc1JyKkjcHP00EAw3kocDWbnXaPqirsSvC5SZ7KY1u63 BU& noCache = daae80e6-d209-42c9-8780-35d00fd8208c& X-ARR-LOG-ID = b1aad3d6-7df8-4828-a89c-665d8b550c0c 80 - 89.179.240.94 - - - ibyb.azurewebsites.net 500 0 0 11369 1676 281
2015-09-27 03:35:02 IBYB GET /signalr/negotiate clientProtocol=1.4&connectionData=[%7B%7D]&connectionToken=YIZWqEe7AHvZHwb_aG7jOA9y_NFwUTBuLWSP46q8yh2rQMcjASbsp7VWlZ0Jzo_Z-n230IlhnOHZKm8kJr72ejLF-4LMopwyfZaWmsKNAy6cTd5uyU-76WoXsd2gpmpEJp8A0vMXe2HeLMIvH2Ckw6NIamEbu_uQvHRplkGeUhqGbTQU04dsU47ksebG_zh9XTtLGY9767CiwCYBg_Zk3aFgfrSvzPBiijfmIP9mUhz2ViAigyPeDeOE6WYRgtkkOIGMXGOoS5vQODHMUtiMaoV-w-jcCWtjHzzaObKNeX6zAsB0aJDc9_7fJAoBER7Jd6g0FOuEDvo8D95f1vA8j2SxbBgR4SFIzBDo_JfzO_TbPA6a2FR-ruw3yZHMidmcz3XQWb3vL5a0BPntzL9MPiVgvuhvkXfiRoDrRbzn2YXSqWrN-eEdjsF_WX-LMUc1JyKkjcHP00EAw3kocDWbnXaPqirsSvC5SZ7KY1u63BU&noCache=daae80e6-d209-42c9-8780-35d00fd8208c&X-ARR-LOG-ID=b1aad3d6-7df8-4828-a89c-665d8b550c0c 80 - 89.179.240.94 - - - ibyb.azurewebsites.net 500 0 0 11369 1676 281
所以不知何故，不知道为什么从设备发送空组名称
（1）：[％7B％22Name％22：％22chat％22％ 7D]
（2）：[％7B％7D]
So somehow, don't know why from device sends empty group name (1) :[%7B%22Name%22:%22chat%22%7D] (2) :[%7B%7D]
看起来像json序列化器问题，但我该如何解决？
Seems like json serializer problem, but how can I fix that?
推荐答案
终于搞定了，这是因为设备构建选项中的'link all'选项，所以json运行不正常
finally got it, it was because of 'link all' option in device build options, so json didn't work well
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