I am writing a client app and messages can appear from the server at any time. Is there a way of setting up a method that will be called when messages appear? I don't want to have to call read() repeatedly to see if there's anything received.

Cool library, btw, I got everything else to work very easily.

I use TCPClient.read() to read responses from a mpd server. The server itself sends more than, e.g. 2048 Bytes but I only receive 1448 Bytes:

if let responseData = self.client.read(self.DATALEN) {
            print("Len: \(responseData.count)")
            response = String.init(bytes: responseData, encoding: String.Encoding.utf8)
}

Hi,

I have developed a class derived from TCPClient to implement some write/read operations with a TCP server on a PLC. The actions I'm intended in perform are:

1. Send a command (write) requisition and read requisition confirmation -> var(success,statusMessage,command) = Client.WriteCommand(CommandValue);
2. Request some PLCs value(write) and read the values from PLC (read)-> var(success,statusMessage,data1,data2,data3) = Client.ReadData();

When I execute each action in distinct button actions it works perfectly, but when I use them into one action at the sequence: var(success,statusMessage,command) = Client.WriteCommand(CommandValue); var(success,statusMessage,data1,data2,data3) = Client.ReadData();
it seems the processes doesn't wait until the first line execution and try to execute the second one. It make mess in my protocol communication. Do you know if this lack of synchrony could be solved?

Thanks

Guys. Help please write such a program for UDP.

class ViewController: UIViewController {
  
  @IBOutlet weak var textView: UITextView!
  
  let host = "apple.com"
  let port = 80
  var client: TCPClient?

  override func viewDidLoad() {
    super.viewDidLoad()
    
    client = TCPClient(address: host, port: Int32(port))
  }
  
  @IBAction func sendButtonAction() {
    guard let client = client else { return }
    
    switch client.connect(timeout: 10) {
    case .success:
      appendToTextField(string: "Connected to host \(client.address)")
      if let response = sendRequest(string: "GET / HTTP/1.0\n\n", using: client) {
        appendToTextField(string: "Response: \(response)")
      }
    case .failure(let error):
      appendToTextField(string: String(describing: error))
    }
  }
  
  private func sendRequest(string: String, using client: TCPClient) -> String? {
    appendToTextField(string: "Sending data ... ")
    
    switch client.send(string: string) {
    case .success:
      return readResponse(from: client)
    case .failure(let error):
      appendToTextField(string: String(describing: error))
      return nil
    }
  }
  
  private func readResponse(from client: TCPClient) -> String? {
    guard let response = client.read(1024*10) else { return nil }
    
    return String(bytes: response, encoding: .utf8)
  }
  
  private func appendToTextField(string: String) {
    print(string)
    textView.text = textView.text.appending("\n\(string)")
  }

}

HI I'm trying to build some app on IoT using swift sockets. iPad will be client and it will send requisitions (for read tags and write commands) for industrial assets and I have some questions, could you help me?

• I need to use delimiters in my messages or just fix size can guarantee messages could be read correctly?
• Is it reasonable to polling read tags periodically and only write commands when necessary? In this approach how you suggest to do this operations and acess data read?
• In case of fail? I just need to descart read and do another read? Thanks

I'm trying to add SwiftSocket to my project (OS X app) using the Cocoapods, but pod install fails with an error:

[!] The platform of the target my-app-name (OS X 10.11) is not compatible with SwiftSocket (1.2), which does not support osx.

Using Xcode 11 and building against iOS 13, I'm getting the following error:

ld: library not found for -lSwiftSocket clang: error: linker command failed with exit code 1 (use -v to see invocation)

I made sure that I am opening the *.xcworkspace file, and I followed Cocoapod's troubleshooting steps.

Any ideas what might be causing it? I did have to manually change the Pod's Swift version from 3 to 5.

Hi, My problem is socket read only (1024*10) charaters. how to read all lines in swift 2 ?

My code: private func sendRequest(data: String, client: TCPClient?) -> (String?) { // It use ufter connection if client != nil { // Send data (WE MUST ADD TO SENDING MESSAGE '\n' ) let (isSuccess, errorMessage) = client!.send(str: "(data)\n") if isSuccess { // Read response data let data = client!.read(1024*10) if let d = data { // Create String from response data if let str = NSString(bytes: d, length: d.count, encoding: NSUTF8StringEncoding) as? String { return (data: str) } else { return (data: nil) } } else { return (data: nil) } } else { print(errorMessage) return (data: nil) } } else { return (data: nil) } }

and other question is here :http://stackoverflow.com/questions/34036070/how-to-read-all-lines-in-socket-swift

Thank you for this, I apologize if this is obvious but I'm only seeing the response header and not the actual response from the server. I'm just using the posted example and printing the response into a UILabel. The response is plain text.

I'm prototyping something and this library is very useful.

UPDATE:

Sorry I mistyped client.read(1024*10) I had some other number inside.

UPDATE 2:

it keeps happening, sometimes returns the headers only and not the data.

Do you know of a way to get around the string decoding that will work? I am seeing everything else just fine. Just the decoding on the read from my client server is not working.

I am not an IOS developer, but i need to be able to write to an ESCPOS printer. swift socket should be able to do this, however i could not yet get his to work as a nativescript plugin. My question: anybody already done this? I saw Aandrea Cremisini working on it, however no workable plugin is available under hit github account

if it helps i can show you the plugin i got so far...

Thanks for your help in advance...

Hi, I am using TCPClient send and received messages successfully but need to retrieve video file from TCPClient to mobile storage? I was try for let data1 = client.read(100,timeout: 5) it return nil. Please suggest sample reference. Thanks,

Package.swift has error when I run the command:swift build 0.o PS E:\swift-projects\SocketLearn> swift run Updating https://github.com/swiftsocket/SwiftSocket Updated https://github.com/swiftsocket/SwiftSocket (1.21s) Computing version for https://github.com/swiftsocket/SwiftSocket error: /\Package.swift has no Package.swift manifest for version 2.1.0 in https://github.com/swiftsocket/SwiftSocket

:pencil: Description

• This PR adds Swift Package Manager support

:bulb: What’s new?

• SwiftSocket can be integrated via Swift Package Manager
• iOS deployment target bumped to 9.0 in order to mitigate warning in newer Xcodes
• Add instructions to README.md

:no_mouth: What’s missing?

• Add 2.2.0 tag after merge

:books: References

• https://stackoverflow.com/questions/49779543/swift-package-manager-c-interop-non-system-libraries

Greetings,

I've tried looking in the code and on the net, can't figure out how to print or assign to a variable the IP Address resolved when using a DNS name, either is SwiftSocket or native SwiftUI function.

What I do is something like: let client = TCPClient(address: www.google.com, port: 443). What I need then is to get the IP Address resolved for www.google.com from the device it's being run and for the life of me, cannot find anything to do that.

All I find is how to get device's IP Address or the WiFi IP Address, but not the remote host I'm connecting to.

I'm using XCode 13 and iOS 15.2.

Thank you :)