当某些请求到达服务器(在移动应用程序上运行的服务器)时，我正在尝试提供视频文件作为响应。例如:有人去 http://mylocalip:8080/video ，我想用视频服务他。
这个视频文件可以存储在本地，也可以是外部的。我开始尝试提供位于 SMB 服务器上的文件，所以我尝试使用此代码从服务器获取文件并将其返回(我知道它正在等待读取整个文件而不是读取和发送 block ，但应该可以工作对吧？):
webServer.addDefaultHandlerForMethod("GET", requestClass: GCDWebServerRequest.self, processBlock: {request in
print("########\n########Request: \(request)")
let webrequested:GCDWebServerRequest = request;
let urlcita:String = String(webrequested.URL)
print("URL of requests\(urlcita)")
if urlcita.rangeOfString("videosmb") != nil{
print("It's a video SMB request")
//Test fake SMB file predefined. Read File using KxSMB
let route:String = "smb://192.168.1.205/ServidorAH/video.avi";
let extensFile:NSString = (route as NSString).pathExtension
let contentype = GCDWebServerGetMimeTypeForExtension(extensFile as String);
print("Content type MIME \(contentype)")
//Open SMB file using KxSMB
let authcredentials = KxSMBAuth.smbAuthWorkgroup("", username: "Guest", password: "");
let provider = KxSMBProvider.sharedSmbProvider()!
let archivoes = provider.fetchAtPath(route, auth: authcredentials)
//Switch to manually end the reading when switched to true. In the future will send chunks of data until the end, instead of reading the whole file first.
var interruptor:Bool = false
//Response Stream block
let responseStream: GCDWebServerStreamedResponse = GCDWebServerStreamedResponse(contentType: contentype, asyncStreamBlock: { completionBlock in
if (interruptor == true)
{
print("Test: End of reading")
completionBlock(NSData(), nil);
}
if archivoes!.isKindOfClass(NSError){
//It can not find the file, SMB error, so empty NSDATA to completion block
let errorcito:NSError = archivoes as! NSError
print("Error obteniendo archivo SMB: \(errorcito.localizedDescription)");
completionBlock(NSData(), nil);
}else{
print("Archivo SMB adecuado \(archivoes)")
let datos:NSData = archivoes!.readDataToEndOfFile()
//Print lenght of data (to check the size of the file)
print("Data lenght \(datos.length)")
//Set switch to true, so the next call will send an empty daya completion block
interruptor = true
//Send data chunk (in this case everything)
completionBlock(datos, nil);
}
})
return responseStream
}else{
//Default response
return GCDWebServerDataResponse(HTML:"<html><body><p>Hello World<br></p></body></html>")
}
但是，我无法让它工作。我总是遇到管道损坏错误，并且访问网络服务器的网络播放器(也从 Mac 和 iOS 浏览)不播放任何内容。我还尝试使用嵌入式 iOS 播放器来记录响应 (KxMovie)。我得到这样的东西:
[DEBUG] Did open connection on socket 19
[DEBUG] Connection received 177 bytes on socket 19
[DEBUG] Connection on socket 19 preflighting request "GET /videosmb" with 177 bytes body
[DEBUG] Connection on socket 19 processing request "GET /videosmb" with 177 bytes body
[DEBUG] Did connect
[DEBUG] Did start background task
[DEBUG] Connection sent 175 bytes on socket 19
...
使用应用程序内部的本地播放器 (KxMovie)，这里似乎是在读取文件 header ，并获得正确的文件大小和视频尺寸。但是它不播放并且结束时说它到达了视频的结尾(没有播放)。紧接着，WebServer 显示错误:
...
[ERROR] Error while writing to socket 19: Broken pipe (32)
[DEBUG] Did close connection on socket 19
[VERBOSE] [fe80::cd0:28cd:3a37:b871%en1:8080] fe80::cd0:28cd:3a37:b871%en1:50109 200 "GET /videosmb" (177 | 175)
[DEBUG] Did disconnect
[DEBUG] Did end background task
考虑到这是我第一次与 SMB 服务器打交道，我想也许我在 SMB 部分做错了什么，所以我决定采用一种仅用于测试的简化方法。 这次我尝试提供一个存储在远程网络服务器(不是 SMB)上的简单 mp4 文件。它也没有用。 最后，我尝试提供包含在应用程序主 bundle 中的本地文件，同样的事情发生了:什么都没有。这是代码:
webServer.addDefaultHandlerForMethod("GET", requestClass: GCDWebServerRequest.self, processBlock: {request in
print("########\n########Request: \(request)")
let webrequested:GCDWebServerRequest = request;
let url:String = String(webrequested.URL)
print("URL of request: \(url)")
if url.rangeOfString("video") != nil{
print("It's a video request")
let rutalocalita = (NSBundle.mainBundle()).pathForResource("video", ofType: "avi")
let datos = NSData(contentsOfFile: rutalocalita!)!
print("video size: \(datos.length)")
return GCDWebServerDataResponse(data: datos, contentType: "video/avi")
}else{
//Default Response: Simple web
return GCDWebServerDataResponse(HTML:"<html><body><p>Hello World<br></p></body></html>")
}
})
这是日志的样子:
[DEBUG] Did open connection on socket 19
[DEBUG] Connection received 177 bytes on socket 19
[DEBUG] Connection on socket 19 preflighting request "GET /video" with 177 bytes body
[DEBUG] Connection on socket 19 processing request "GET /video" with 177 bytes body
[DEBUG] Did connect
[DEBUG] Did start background task
[myCUSTOMDebug] Read 13584902 b. I'm going to send the response back to the request.
[DEBUG] Connection sent 173 bytes on socket 19
...
这里是我在应用程序内部使用的本地播放器来跟踪响应，能够读取如下内容:
header='HTTP/1.1 200 OK'
2015-10-17 17:51:41.571 videotvtest[262:14252] http_code=200
2015-10-17 17:51:41.571 videotvtest[262:14252] header='Cache-Control: no-cache'
2015-10-17 17:51:41.571 videotvtest[262:14252] header='Content-Length: 13584902'
2015-10-17 17:51:41.572 videotvtest[262:14252] header='Content-Type: video/avi'
2015-10-17 17:51:41.572 videotvtest[262:14252] header='Connection: Close'
2015-10-17 17:51:41.573 videotvtest[262:14252] header='Server: GCDWebServer'
...
[ERROR] Error while writing to socket 19: Broken pipe (32)
[DEBUG] Did close connection on socket 19
[VERBOSE] [fe80::cd0:28cd:3a37:b871%en1:8080] fe80::cd0:28cd:3a37:b871%en1:50155 200 "GET /video" (177 | 173)
netbios_ns_send_name_query, name query sent for '*'.
[DEBUG] Did disconnect
[DEBUG] Did end background task
为此我正在尝试使用 tvOS 和 Xcode 7，但我想如果我能够显示常规 HTML 响应应该没问题...所以我确定我遗漏了什么，或者也许我在安装 WebServer 时错过了一些框架(我没有使用 Pod)？ 提前致谢
最佳答案
如果您想要使用视频标签提供可以在浏览器中播放的视频文件，至少在 Chrome 和 Safari 上，您需要实现 HTTP 范围请求。
如果您使用 GCDWebServerFileResponse，GCDWebServer 会自动实现范围支持。如果您使用其他类型的响应，则需要根据传入的 GCDWebServerRequest 的 byteRange 属性自行实现。您应该从 GCDWebServerFileResponse.m 复制粘贴逻辑。
关于ios - 如何为某些请求提供远程文件(从远程 SMB 服务器获取)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33188728/