SSURLSession

对swift的URLSession进行拆分，增加支持设置resolve和connectTo的能力

使用的时候，对URLRequest设定Header

let resolve = "\(host):443:\(ip)"
setValue(resolve, forHTTPHeaderField: "resolve")

connectTo:

let connectTo = "\(host):443:\(ip):443"
setValue(connectTo, forHTTPHeaderField: "connectTo")

支持SNI功能，用于IP直连

目前发现上面两个字段都可以实现强制解析的功能 所以用上面那个字段就可以实现需求了 需要注意的是，ip服务器需要包含host域名的证书，这样才能认证通过

安装

SPM

.package(url: "https://github.com/zhtut/SSURLSession.git", from: "0.1.0")

Cocoapods

pod 'SSURLSession'

使用

import SSURLSession

let host = "www.baidu.com"
let urlStr = "https://\(host)"
let url = URL(string: urlStr)!
var req = URLRequest(url: url)
// direct ip
let ip = "14.119.104.254"
let resolve = "\(host):443:\(ip)"
// add dns resolve
req.setValue(resolve, forHTTPHeaderField: "resolve")
let task = SSURLSession.URLSession.shared.dataTask(with: req, completionHandler: { data, resp, error in
    if let data {
        print("success")
    } else {
        if let error {
            print("error: \(error)")
        }
    }
})
task.resume()

问题

由于swift foundation core lib 未完全完成，有部分功能是不正常的， 但至少比CFNetwork和直接使用libcurl更成熟

https://github.com/apple/swift-corelibs-foundation/blob/main/Docs/Status.md

• URL: Networking primitives

  The classes in this group provide functionality for manipulating URLs and paths via a common model object. The group also has classes for creating and receiving network connections.

  Entity Name	Status	Test Coverage	Notes
  URLAuthenticationChallenge	Unimplemented	None
  URLCache	Unimplemented	None
  URLCredential	Complete	Incomplete
  URLCredentialStorage	Unimplemented	None
  NSURLError*	Complete	N/A
  URLProtectionSpace	Unimplemented	None
  URLProtocol	Unimplemented	None
  URLProtocolClient	Unimplemented	None
  NSURLRequest	Complete	Incomplete
  NSMutableURLRequest	Complete	Incomplete
  URLResponse	Complete	Substantial
  NSHTTPURLResponse	Complete	Substantial
  NSURL	Mostly Complete	Substantial	Resource values remain unimplemented
  NSURLQueryItem	Complete	N/A
  URLResourceKey	Complete	N/A
  URLFileResourceType	Complete	N/A
  URL	Complete	Incomplete
  URLResourceValues	Complete	N/A
  URLComponents	Complete	Incomplete
  URLRequest	Complete	None
  HTTPCookie	Complete	Incomplete
  HTTPCookiePropertyKey	Complete	N/A
  HTTPCookieStorage	Mostly Complete	Substantial
  Host	Complete	None
  Configuration	N/A	N/A	For internal use only
  EasyHandle	N/A	N/A	For internal use only
  HTTPBodySource	N/A	N/A	For internal use only
  HTTPMessage	N/A	N/A	For internal use only
  libcurlHelpers	N/A	N/A	For internal use only
  MultiHandle	N/A	N/A	For internal use only
  URLSession	Mostly Complete	Incomplete	invalidation, resetting, flushing, getting tasks, and others remain unimplemented
  URLSessionConfiguration	Mostly Complete	Incomplete	ephemeral and background(withIdentifier:) remain unimplemented
  URLSessionDelegate	Complete	N/A
  URLSessionTask	Mostly Complete	Incomplete	cancel(), createTransferState(url:) with streams, and others remain unimplemented
  URLSessionDataTask	Complete	Incomplete
  URLSessionUploadTask	Complete	None
  URLSessionDownloadTask	Incomplete	Incomplete
  URLSessionStreamTask	Unimplemented	None
  TaskRegistry	N/A	N/A	For internal use only
  TransferState	N/A	N/A	For internal use only