摘要：
Swift 自定义Useragent Swift自定义Useragent背景最近在接阿里云的WAF，防火墙会拦截某些请求。被拦截的请求是看不到Headers信息的，只能看到Useragent，所以，应后台需求，自定义Useragent，这样可以更方便从服务器日志定位问题。准备当前项目中使用的是Alamofire进行网络请求。通过查看源码发现，默认的SessionManager是初始化完成的，不能修改。openstaticlet`default`:SessionManager={letconfiguration=URLSessionConfiguration.defaultconfiguration.httpAdditionalHeaders=SessionManager.defaultHTTPHeadersreturnSessionManager}()默认SessionManager的Useragent也是不可修改的，如下：openstaticletdefaultHTTPHeaders:HTTPHeaders={letacceptEncoding:String="gzip;q=1.0,compress;q=0.5"letacceptLanguage=Locale.preferredLanguages.prefix.enumerated().map{index,languageCodeinletquality=1.0-return";q="}.joinedletuserAgent:String={ifletinfo=Bundle.main.infoDictionary{letexecutable=info[kCFBundleExecutableKeyasString]as?"Unknown"letosNameVersion:String={letversion=ProcessInfo.processInfo.operatingSystemVersionletversionString=".."letosName:String={#ifosreturn"iOS"#elseifosreturn"watchOS"#elseifosreturn"tvOS"#elseifosreturn"OSX"#elseifosreturn"Linux"#elsereturn"Unknown"#endif}()return""}()letalamofireVersion:String={guardletafInfo=Bundle.infoDictionary,letbuild=afInfo["CFBundleShortVersionString"]else{return"Unknown"}return"Alamofire/"}()return"/"}return"Alamofire"}()return["Accept-Encoding":acceptEncoding,"Accept-Language":acceptLanguage,"User-Agent":userAgent]}()但是可以通过自定义的方法重新初始化一个SessionManager。
背景
最近在接阿里云的WAF，防火墙会拦截某些请求。被拦截的请求是看不到Headers信息的，只能看到Useragent，所以，应后台需求，自定义Useragent，这样可以更方便从服务器日志定位问题。
准备
当前项目中使用的是Alamofire进行网络请求。 通过查看源码发现，默认的SessionManager是初始化完成的，不能修改。
open static let `default`: SessionManager = {
let configuration = URLSessionConfiguration.default
configuration.httpAdditionalHeaders = SessionManager.defaultHTTPHeaders
return SessionManager(configuration: configuration)
}()默认SessionManager 的Useragent也是不可修改的，如下：
open static let defaultHTTPHeaders: HTTPHeaders = {
let acceptEncoding: String = "gzip;q=1.0, compress;q=0.5"
let acceptLanguage = Locale.preferredLanguages.prefix(6).enumerated().map { index, languageCode in
let quality = 1.0 - (Double(index) * 0.1)
return "(languageCode);q=(quality)"
}.joined(separator: ", ")
let userAgent: String = {
if let info = Bundle.main.infoDictionary {
let executable = info[kCFBundleExecutableKey as String] as? String ?? "Unknown"
let bundle = info[kCFBundleIdentifierKey as String] as? String ?? "Unknown"
let appVersion = info["CFBundleShortVersionString"] as? String ?? "Unknown"
let appBuild = info[kCFBundleVersionKey as String] as? String ?? "Unknown"
let osNameVersion: String = {
let version = ProcessInfo.processInfo.operatingSystemVersion
let versionString = "(version.majorVersion).(version.minorVersion).(version.patchVersion)"
let osName: String = {
#if os(iOS)
return "iOS"
#elseif os(watchOS)
return "watchOS"
#elseif os(tvOS)
return "tvOS"
#elseif os(macOS)
return "OS X"
#elseif os(Linux)
return "Linux"
#else
return "Unknown"
#endif
}()
return "(osName) (versionString)"
}()
let alamofireVersion: String = {
guard
let afInfo = Bundle(for: SessionManager.self).infoDictionary,
let build = afInfo["CFBundleShortVersionString"]
else { return "Unknown" }
return "Alamofire/(build)"
}()
return "(executable)/(appVersion) ((bundle); build:(appBuild); (osNameVersion)) (alamofireVersion)"
}
return "Alamofire"
}()
return [
"Accept-Encoding": acceptEncoding,
"Accept-Language": acceptLanguage,
"User-Agent": userAgent
]
}()但是可以通过自定义的方法重新初始化一个SessionManager。
public init(
configuration: URLSessionConfiguration = URLSessionConfiguration.default,
delegate: SessionDelegate = SessionDelegate(),
serverTrustPolicyManager: ServerTrustPolicyManager? = nil)
{
self.delegate = delegate
self.session = URLSession(configuration: configuration, delegate: delegate, delegateQueue: nil)
commonInit(serverTrustPolicyManager: serverTrustPolicyManager)
}下面是我的初始化方法：
class MYSessionManager {
open static let `default`: SessionManager = {
let bhUserAgent = "device:xx;version:xx;bundleId:xx;"
var bhHttpHeaders = SessionManager.defaultHTTPHeaders
bhHttpHeaders["User-Agent"] = bhUserAgent
let configuration = URLSessionConfiguration.default
configuration.httpAdditionalHeaders = bhHttpHeaders
return SessionManager(configuration: configuration)
}()
}