From 1b9591e07acee6937f262647ab5f6da244fb4049 Mon Sep 17 00:00:00 2001
From: bjarnedevel0per <>
Date: Tue, 11 Sep 2018 08:30:41 +0200
Subject: [PATCH 1/2] catch type conversion error

---
 Sources/SwiftSerial.swift | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Sources/SwiftSerial.swift b/Sources/SwiftSerial.swift
index e6f24ad..0add9b7 100644
--- a/Sources/SwiftSerial.swift
+++ b/Sources/SwiftSerial.swift
@@ -209,6 +209,7 @@ public enum PortError: Int32, Error {
     case mustReceiveOrTransmit
     case mustBeOpen
     case stringsMustBeUTF8
+    case unableToConvertByteToCharacter
 }
 
 public class SerialPort {
@@ -424,6 +425,9 @@ extension SerialPort {
             let bytesRead = try readBytes(into: buffer, size: 1)
 
             if bytesRead > 0 {
+                if ( buffer[0] > 127) {
+                    throw PortError.unableToConvertByteToCharacter
+                }
                 let character = CChar(buffer[0])
                 
                 if character == terminator {

From db7a3b79a296c75f9f43f9006f6efbe2869616b3 Mon Sep 17 00:00:00 2001
From: bjarnedevel0per <>
Date: Tue, 11 Sep 2018 10:26:36 +0200
Subject: [PATCH 2/2] handle removal of the serialdevice

---
 Sources/SwiftSerial.swift | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Sources/SwiftSerial.swift b/Sources/SwiftSerial.swift
index 0add9b7..706618d 100644
--- a/Sources/SwiftSerial.swift
+++ b/Sources/SwiftSerial.swift
@@ -210,6 +210,7 @@ public enum PortError: Int32, Error {
     case mustBeOpen
     case stringsMustBeUTF8
     case unableToConvertByteToCharacter
+    case deviceNotConnected
 }
 
 public class SerialPort {
@@ -371,7 +372,13 @@ extension SerialPort {
         guard let fileDescriptor = fileDescriptor else {
             throw PortError.mustBeOpen
         }
-
+        
+        var s: stat = stat()
+        fstat(fileDescriptor, &s)
+        if s.st_nlink != 1 {
+            throw PortError.deviceNotConnected
+        }
+        
         let bytesRead = read(fileDescriptor, buffer, size)
         return bytesRead
     }