updated local installation scripts

externals/install-dotnet.ps1

@@ -29,7 +29,7 @@
 .PARAMETER Version
     Default: latest
     Represents a build version on specific channel. Possible values:
-    - latest - most latest build on specific channel
+    - latest - the latest build on specific channel
     - 3-part version in a format A.B.C - represents specific version of build
           examples: 2.0.0-preview2-006120, 1.1.0
 .PARAMETER Internal
@@ -171,6 +171,7 @@ function Say-Invocation($Invocation) {
 
 function Invoke-With-Retry([ScriptBlock]$ScriptBlock, [System.Threading.CancellationToken]$cancellationToken = [System.Threading.CancellationToken]::None, [int]$MaxAttempts = 3, [int]$SecondsBetweenAttempts = 1) {
     $Attempts = 0
+    $local:startTime = $(get-date)
 
     while ($true) {
         try {
@@ -182,7 +183,11 @@ function Invoke-With-Retry([ScriptBlock]$ScriptBlock, [System.Threading.Cancella
                 Start-Sleep $SecondsBetweenAttempts
             }
             else {
-                throw
+                $local:elapsedTime = $(get-date) - $local:startTime
+                if (($local:elapsedTime.TotalSeconds - $DownloadTimeout) -gt 0 -and -not $cancellationToken.IsCancellationRequested) {
+                    throw New-Object System.TimeoutException("Failed to reach the server: connection timeout: default timeout is $DownloadTimeout second(s)");
+                }
+                throw;
             }
         }
     }
@@ -199,6 +204,15 @@ function Get-Machine-Architecture() {
         return $ENV:PROCESSOR_ARCHITEW6432
     }
 
+    # covers the case when PS x64 is run on ARM machine
+    if( ((Get-CimInstance -ClassName CIM_OperatingSystem).OSArchitecture) -like "ARM*") {
+        if( [Environment]::Is64BitOperatingSystem )
+        {
+            return "arm64"
+        }  
+        return "arm"
+    }
+
     return $ENV:PROCESSOR_ARCHITECTURE
 }
 
@@ -800,6 +814,11 @@ function Extract-Dotnet-Package([string]$ZipPath, [string]$OutPath) {
             }
         }
     }
+    catch
+    {
+        Say-Error "Failed to extract package. Exception: $_"
+        throw;
+    }
     finally {
         if ($null -ne $Zip) {
             $Zip.Dispose()
@@ -1103,6 +1122,10 @@ $ScriptName = $MyInvocation.MyCommand.Name
 $feeds = Get-Feeds-To-Use
 $DownloadLinks = @()
 
+if ($Version.ToLowerInvariant() -ne "latest" -and -not [string]::IsNullOrEmpty($Quality)) {
+    throw "Quality and Version options are not allowed to be specified simultaneously. See https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-install-script#options for details."
+}
+
 # aka.ms links can only be used if the user did not request a specific version via the command line or a global.json file.
 if ([string]::IsNullOrEmpty($JSonFile) -and ($Version -eq "latest")) {
     ($DownloadLink, $SpecificVersion, $EffectiveVersion) = Get-AkaMsLink-And-Version $NormalizedChannel $NormalizedQuality $Internal $NormalizedProduct $CLIArchitecture
@@ -1248,13 +1271,14 @@ Prepend-Sdk-InstallRoot-To-Path -InstallRoot $InstallRoot
 
 Say "Note that the script does not resolve dependencies during installation."
 Say "To check the list of dependencies, go to https://docs.microsoft.com/dotnet/core/install/windows#dependencies"
+Say "Installed version is $($DownloadedLink.effectiveVersion)"
 Say "Installation finished"
 
 # SIG # Begin signature block
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@@ -1326,141 +1350,141 @@ Say "Installation finished"
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 # SIG # End signature block

externals/install-dotnet.sh

@@ -1000,20 +1000,28 @@ downloadcurl() {
     # Avoid passing URI with credentials to functions: note, most of them echoing parameters of invocation in verbose output.
     local remote_path_with_credential="${remote_path}${feed_credential}"
     local curl_options="--retry 20 --retry-delay 2 --connect-timeout 15 -sSL -f --create-dirs "
-    local failed=false
+    local curl_exit_code=0;
     if [ -z "$out_path" ]; then
-        curl $curl_options "$remote_path_with_credential" 2>&1 || failed=true
+        curl $curl_options "$remote_path_with_credential" 2>&1
+        curl_exit_code=$?
     else
-        curl $curl_options -o "$out_path" "$remote_path_with_credential" 2>&1 || failed=true
+        curl $curl_options -o "$out_path" "$remote_path_with_credential" 2>&1
+        curl_exit_code=$?
     fi
-    if [ "$failed" = true ]; then
+    
+    if [ $curl_exit_code -gt 0 ]; then
+        download_error_msg="Unable to download $remote_path."
+        # Check for curl timeout codes
+        if [[ $curl_exit_code == 7 || $curl_exit_code == 28 ]]; then
+            download_error_msg+=" Failed to reach the server: connection timeout."
+        else
             local disable_feed_credential=false
             local response=$(get_http_header_curl $remote_path $disable_feed_credential)
             http_code=$( echo "$response" | awk '/^HTTP/{print $2}' | tail -1 )
-        download_error_msg="Unable to download $remote_path."
+            if  [[ ! -z $http_code && $http_code != 2* ]]; then
-        if  [[ $http_code != 2* ]]; then
                 download_error_msg+=" Returned HTTP status code: $http_code."
             fi
+        fi
         say_verbose "$download_error_msg"
         return 1
     fi
@@ -1055,8 +1063,11 @@ downloadwget() {
         local response=$(get_http_header_wget $remote_path $disable_feed_credential)
         http_code=$( echo "$response" | awk '/^  HTTP/{print $2}' | tail -1 )
         download_error_msg="Unable to download $remote_path."
-        if  [[ $http_code != 2* ]]; then
+        if  [[ ! -z $http_code && $http_code != 2* ]]; then
             download_error_msg+=" Returned HTTP status code: $http_code."
+        # wget exit code 4 stands for network-issue
+        elif [[ $wget_result == 4 ]]; then
+            download_error_msg+=" Failed to reach the server: connection timeout."
         fi
         say_verbose "$download_error_msg"
         return 1
@@ -1179,6 +1190,11 @@ generate_akams_links() {
     local valid_aka_ms_link=true;
 
     normalized_version="$(to_lowercase "$version")"
+    if [[ "$normalized_version" != "latest" ]] && [ -n "$normalized_quality" ]; then
+        say_err "Quality and Version options are not allowed to be specified simultaneously. See https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-install-script#options for details."
+        return 1
+    fi
+
     if [[ -n "$json_file" || "$normalized_version" != "latest" ]]; then
         # aka.ms links are not needed when exact version is specified via command or json file
         return
@@ -1392,6 +1408,7 @@ install_dotnet() {
         unset IFS;
         say_verbose "Checking installation: version = $release_version"
         if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$release_version"; then
+            say "Installed version is $effective_version"
             return 0
         fi
     fi
@@ -1399,6 +1416,7 @@ install_dotnet() {
     #  Check if the standard SDK version is installed.
     say_verbose "Checking installation: version = $effective_version"
     if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$effective_version"; then
+        say "Installed version is $effective_version"
         return 0
     fi
 
@@ -1552,7 +1570,7 @@ do
             echo "  -v,--version <VERSION>         Use specific VERSION, Defaults to \`$version\`."
             echo "      -Version"
             echo "          Possible values:"
-            echo "          - latest - most latest build on specific channel"
+            echo "          - latest - the latest build on specific channel"
             echo "          - 3-part version in a format A.B.C - represents specific version of build"
             echo "              examples: 2.0.0-preview2-006120; 1.1.0"
             echo "  -q,--quality <quality>         Download the latest build of specified quality in the channel."