ClientWebSocket.ConnectAsync() does not work on Mac  #90258

Closed
#91473
Closed
ClientWebSocket.ConnectAsync() does not work on Mac #90258
#91473
Assignees
steveisok
Labels
area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
Milestone
7.0.x

Description

@linkaiyu
linkaiyu
opened on Aug 2, 2023

Description

in a simple MAUI test app, call to ClientWebSocket.ConnectAsync() on Mac does not return.
some experimental work suggests that MAUI is defaulting to HttpNoProxy:
when we don’t set proxy to ClientWebSocket Option the MAUI ClientWebSocket is defaulting to NoProxy and the connect fails. I checked the values of HttpClient.DefaultProxy:
In MAUI app:

HttpClient.DefaultProxy{System.Net.Http.HttpNoProxy}

comparing that to .Net7 App, it's set to MacProxy:

HttpClient.DefaultProxy{System.Net.Http.MacProxy}

for reference:
https://github.com/dotnet/dotnet/blob/main/src/runtime/src/libraries/System.Net.WebSockets.Client/src/System/Net/WebSockets/WebSocketHandle.Managed.cs#L35

in customer situation, WPAD (Web Proxy Auto-Discovery) is used to configure internal laptops.
while testing on MS VPN, the code works. It's worth considering whether the MS VPN proxy setup differs from WPAD,

we need to get Proxy Url/object into MAUI app for all different VPN configuration and create WebProxy object and set it to ClientWebSocket.

Steps to Reproduce

download the repro to Mac connected via VPN with WPAD configured.
in the repro app, click on button to start test. the call to ClientWebSocket.ConnectAsync() will be stuck

Link to public reproduction project repository

https://github.com/linkaiyu/ClientWebSocket

Version with bug

7.0.49

Last version that worked well

Unknown/Other

Affected platforms

macOS

Affected platform versions

No response

Did you find any workaround?

short term workaround is to create a webproxy for the connection, but for long term when the app is going to be released to the public, the short term solution won't meet the needs

Relevant log output

No response

Metadata

Metadata

Assignees

Labels

area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS

Type

No type

Projects

No projects

    Milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions

    , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
     blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

    Skip to content
    ClientWebSocket.ConnectAsync() does not work on Mac  #90258
    Closed
    #91473
    Closed
    ClientWebSocket.ConnectAsync() does not work on Mac #90258
    #91473
    Assignees
    steveisok
    Labels
    area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
    Milestone
    7.0.x
    Description
    @linkaiyu
    linkaiyu
    opened on Aug 2, 2023
    Description
    in a simple MAUI test app, call to ClientWebSocket.ConnectAsync() on Mac does not return.
    
some experimental work suggests that MAUI is defaulting to HttpNoProxy:
    
when we don’t set proxy to ClientWebSocket Option the MAUI ClientWebSocket is defaulting to NoProxy and the connect fails. I checked the values of HttpClient.DefaultProxy:
    
In MAUI app:
    HttpClient.DefaultProxy{System.Net.Http.HttpNoProxy}
    comparing that to .Net7 App, it's set to MacProxy:
    HttpClient.DefaultProxy{System.Net.Http.MacProxy}
    for reference:
    https://github.com/dotnet/dotnet/blob/main/src/runtime/src/libraries/System.Net.WebSockets.Client/src/System/Net/WebSockets/WebSocketHandle.Managed.cs#L35
    in customer situation, WPAD (Web Proxy Auto-Discovery) is used to configure internal laptops.
    
while testing on MS VPN, the code works. It's worth considering whether the MS VPN proxy setup differs from WPAD,
    we need to get Proxy Url/object into MAUI app for all different VPN configuration and create WebProxy object and set it to ClientWebSocket.
    Steps to Reproduce
    download the repro to Mac connected via VPN with WPAD configured.
    
in the repro app, click on button to start test. the call to ClientWebSocket.ConnectAsync() will be stuck
    Link to public reproduction project repository
    https://github.com/linkaiyu/ClientWebSocket
    Version with bug
    7.0.49
    Last version that worked well
    Unknown/Other
    Affected platforms
    macOS
    Affected platform versions
    No response
    Did you find any workaround?
    short term workaround is to create a webproxy for the connection, but for long term when the app is going to be released to the public, the short term solution won't meet the needs
    Relevant log output
    No response
    Metadata
    Metadata
    Assignees
    Labels
    area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
    Type
    No type
    Projects
    No projects
      Milestone
      Relationships
      None yet
      Development
      No branches or pull requests
      Issue actions
      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

      Skip to content
      ClientWebSocket.ConnectAsync() does not work on Mac  #90258
      Closed
      #91473
      Closed
      ClientWebSocket.ConnectAsync() does not work on Mac #90258
      #91473
      Assignees
      steveisok
      Labels
      area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
      Milestone
      7.0.x
      Description
      @linkaiyu
      linkaiyu
      opened on Aug 2, 2023
      Description
      in a simple MAUI test app, call to ClientWebSocket.ConnectAsync() on Mac does not return.
      
some experimental work suggests that MAUI is defaulting to HttpNoProxy:
      
when we don’t set proxy to ClientWebSocket Option the MAUI ClientWebSocket is defaulting to NoProxy and the connect fails. I checked the values of HttpClient.DefaultProxy:
      
In MAUI app:
      HttpClient.DefaultProxy{System.Net.Http.HttpNoProxy}
      comparing that to .Net7 App, it's set to MacProxy:
      HttpClient.DefaultProxy{System.Net.Http.MacProxy}
      for reference:
      https://github.com/dotnet/dotnet/blob/main/src/runtime/src/libraries/System.Net.WebSockets.Client/src/System/Net/WebSockets/WebSocketHandle.Managed.cs#L35
      in customer situation, WPAD (Web Proxy Auto-Discovery) is used to configure internal laptops.
      
while testing on MS VPN, the code works. It's worth considering whether the MS VPN proxy setup differs from WPAD,
      we need to get Proxy Url/object into MAUI app for all different VPN configuration and create WebProxy object and set it to ClientWebSocket.
      Steps to Reproduce
      download the repro to Mac connected via VPN with WPAD configured.
      
in the repro app, click on button to start test. the call to ClientWebSocket.ConnectAsync() will be stuck
      Link to public reproduction project repository
      https://github.com/linkaiyu/ClientWebSocket
      Version with bug
      7.0.49
      Last version that worked well
      Unknown/Other
      Affected platforms
      macOS
      Affected platform versions
      No response
      Did you find any workaround?
      short term workaround is to create a webproxy for the connection, but for long term when the app is going to be released to the public, the short term solution won't meet the needs
      Relevant log output
      No response
      Metadata
      Metadata
      Assignees
      Labels
      area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
      Type
      No type
      Projects
      No projects
        Milestone
        Relationships
        None yet
        Development
        No branches or pull requests
        Issue actions
        
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

        Skip to content
        ClientWebSocket.ConnectAsync() does not work on Mac  #90258
        Closed
        #91473
        Closed
        ClientWebSocket.ConnectAsync() does not work on Mac #90258
        #91473
        Assignees
        steveisok
        Labels
        area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
        Milestone
        7.0.x
        Description
        @linkaiyu
        linkaiyu
        opened on Aug 2, 2023
        Description
        in a simple MAUI test app, call to ClientWebSocket.ConnectAsync() on Mac does not return.
        
some experimental work suggests that MAUI is defaulting to HttpNoProxy:
        
when we don’t set proxy to ClientWebSocket Option the MAUI ClientWebSocket is defaulting to NoProxy and the connect fails. I checked the values of HttpClient.DefaultProxy:
        
In MAUI app:
        HttpClient.DefaultProxy{System.Net.Http.HttpNoProxy}
        comparing that to .Net7 App, it's set to MacProxy:
        HttpClient.DefaultProxy{System.Net.Http.MacProxy}
        for reference:
        https://github.com/dotnet/dotnet/blob/main/src/runtime/src/libraries/System.Net.WebSockets.Client/src/System/Net/WebSockets/WebSocketHandle.Managed.cs#L35
        in customer situation, WPAD (Web Proxy Auto-Discovery) is used to configure internal laptops.
        
while testing on MS VPN, the code works. It's worth considering whether the MS VPN proxy setup differs from WPAD,
        we need to get Proxy Url/object into MAUI app for all different VPN configuration and create WebProxy object and set it to ClientWebSocket.
        Steps to Reproduce
        download the repro to Mac connected via VPN with WPAD configured.
        
in the repro app, click on button to start test. the call to ClientWebSocket.ConnectAsync() will be stuck
        Link to public reproduction project repository
        https://github.com/linkaiyu/ClientWebSocket
        Version with bug
        7.0.49
        Last version that worked well
        Unknown/Other
        Affected platforms
        macOS
        Affected platform versions
        No response
        Did you find any workaround?
        short term workaround is to create a webproxy for the connection, but for long term when the app is going to be released to the public, the short term solution won't meet the needs
        Relevant log output
        No response
        Metadata
        Metadata
        Assignees
        Labels
        area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
        Type
        No type
        Projects
        No projects
          Milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

          Skip to content
          ClientWebSocket.ConnectAsync() does not work on Mac  #90258
          Closed
          #91473
          Closed
          ClientWebSocket.ConnectAsync() does not work on Mac #90258
          #91473
          Assignees
          steveisok
          Labels
          area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
          Milestone
          7.0.x
          Description
          @linkaiyu
          linkaiyu
          opened on Aug 2, 2023
          Description
          in a simple MAUI test app, call to ClientWebSocket.ConnectAsync() on Mac does not return.
          
some experimental work suggests that MAUI is defaulting to HttpNoProxy:
          
when we don’t set proxy to ClientWebSocket Option the MAUI ClientWebSocket is defaulting to NoProxy and the connect fails. I checked the values of HttpClient.DefaultProxy:
          
In MAUI app:
          HttpClient.DefaultProxy{System.Net.Http.HttpNoProxy}
          comparing that to .Net7 App, it's set to MacProxy:
          HttpClient.DefaultProxy{System.Net.Http.MacProxy}
          for reference:
          https://github.com/dotnet/dotnet/blob/main/src/runtime/src/libraries/System.Net.WebSockets.Client/src/System/Net/WebSockets/WebSocketHandle.Managed.cs#L35
          in customer situation, WPAD (Web Proxy Auto-Discovery) is used to configure internal laptops.
          
while testing on MS VPN, the code works. It's worth considering whether the MS VPN proxy setup differs from WPAD,
          we need to get Proxy Url/object into MAUI app for all different VPN configuration and create WebProxy object and set it to ClientWebSocket.
          Steps to Reproduce
          download the repro to Mac connected via VPN with WPAD configured.
          
in the repro app, click on button to start test. the call to ClientWebSocket.ConnectAsync() will be stuck
          Link to public reproduction project repository
          https://github.com/linkaiyu/ClientWebSocket
          Version with bug
          7.0.49
          Last version that worked well
          Unknown/Other
          Affected platforms
          macOS
          Affected platform versions
          No response
          Did you find any workaround?
          short term workaround is to create a webproxy for the connection, but for long term when the app is going to be released to the public, the short term solution won't meet the needs
          Relevant log output
          No response
          Metadata
          Metadata
          Assignees
          Labels
          area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
          Type
          No type
          Projects
          No projects
            Milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

            Skip to content
            ClientWebSocket.ConnectAsync() does not work on Mac  #90258
            Closed
            #91473
            Closed
            ClientWebSocket.ConnectAsync() does not work on Mac #90258
            #91473
            Assignees
            steveisok
            Labels
            area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
            Milestone
            7.0.x
            Description
            @linkaiyu
            linkaiyu
            opened on Aug 2, 2023
            Description
            in a simple MAUI test app, call to ClientWebSocket.ConnectAsync() on Mac does not return.
            
some experimental work suggests that MAUI is defaulting to HttpNoProxy:
            
when we don’t set proxy to ClientWebSocket Option the MAUI ClientWebSocket is defaulting to NoProxy and the connect fails. I checked the values of HttpClient.DefaultProxy:
            
In MAUI app:
            HttpClient.DefaultProxy{System.Net.Http.HttpNoProxy}
            comparing that to .Net7 App, it's set to MacProxy:
            HttpClient.DefaultProxy{System.Net.Http.MacProxy}
            for reference:
            https://github.com/dotnet/dotnet/blob/main/src/runtime/src/libraries/System.Net.WebSockets.Client/src/System/Net/WebSockets/WebSocketHandle.Managed.cs#L35
            in customer situation, WPAD (Web Proxy Auto-Discovery) is used to configure internal laptops.
            
while testing on MS VPN, the code works. It's worth considering whether the MS VPN proxy setup differs from WPAD,
            we need to get Proxy Url/object into MAUI app for all different VPN configuration and create WebProxy object and set it to ClientWebSocket.
            Steps to Reproduce
            download the repro to Mac connected via VPN with WPAD configured.
            
in the repro app, click on button to start test. the call to ClientWebSocket.ConnectAsync() will be stuck
            Link to public reproduction project repository
            https://github.com/linkaiyu/ClientWebSocket
            Version with bug
            7.0.49
            Last version that worked well
            Unknown/Other
            Affected platforms
            macOS
            Affected platform versions
            No response
            Did you find any workaround?
            short term workaround is to create a webproxy for the connection, but for long term when the app is going to be released to the public, the short term solution won't meet the needs
            Relevant log output
            No response
            Metadata
            Metadata
            Assignees
            Labels
            area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
            Type
            No type
            Projects
            No projects
              Milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              ClientWebSocket.ConnectAsync() does not work on Mac  #90258
              Closed
              #91473
              Closed
              ClientWebSocket.ConnectAsync() does not work on Mac #90258
              #91473
              Assignees
              steveisok
              Labels
              area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
              Milestone
              7.0.x
              Description
              @linkaiyu
              linkaiyu
              opened on Aug 2, 2023
              Description
              in a simple MAUI test app, call to ClientWebSocket.ConnectAsync() on Mac does not return.
              
some experimental work suggests that MAUI is defaulting to HttpNoProxy:
              
when we don’t set proxy to ClientWebSocket Option the MAUI ClientWebSocket is defaulting to NoProxy and the connect fails. I checked the values of HttpClient.DefaultProxy:
              
In MAUI app:
              HttpClient.DefaultProxy{System.Net.Http.HttpNoProxy}
              comparing that to .Net7 App, it's set to MacProxy:
              HttpClient.DefaultProxy{System.Net.Http.MacProxy}
              for reference:
              https://github.com/dotnet/dotnet/blob/main/src/runtime/src/libraries/System.Net.WebSockets.Client/src/System/Net/WebSockets/WebSocketHandle.Managed.cs#L35
              in customer situation, WPAD (Web Proxy Auto-Discovery) is used to configure internal laptops.
              
while testing on MS VPN, the code works. It's worth considering whether the MS VPN proxy setup differs from WPAD,
              we need to get Proxy Url/object into MAUI app for all different VPN configuration and create WebProxy object and set it to ClientWebSocket.
              Steps to Reproduce
              download the repro to Mac connected via VPN with WPAD configured.
              
in the repro app, click on button to start test. the call to ClientWebSocket.ConnectAsync() will be stuck
              Link to public reproduction project repository
              https://github.com/linkaiyu/ClientWebSocket
              Version with bug
              7.0.49
              Last version that worked well
              Unknown/Other
              Affected platforms
              macOS
              Affected platform versions
              No response
              Did you find any workaround?
              short term workaround is to create a webproxy for the connection, but for long term when the app is going to be released to the public, the short term solution won't meet the needs
              Relevant log output
              No response
              Metadata
              Metadata
              Assignees
              Labels
              area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
              Type
              No type
              Projects
              No projects
                Milestone
                Relationships
                None yet
                Development
                No branches or pull requests
                Issue actions
                
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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                ClientWebSocket.ConnectAsync() does not work on Mac  #90258
                Closed
                #91473
                Closed
                ClientWebSocket.ConnectAsync() does not work on Mac #90258
                #91473
                Assignees
                steveisok
                Labels
                area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
                Milestone
                7.0.x
                Description
                @linkaiyu
                linkaiyu
                opened on Aug 2, 2023
                Description
                in a simple MAUI test app, call to ClientWebSocket.ConnectAsync() on Mac does not return.
                
some experimental work suggests that MAUI is defaulting to HttpNoProxy:
                
when we don’t set proxy to ClientWebSocket Option the MAUI ClientWebSocket is defaulting to NoProxy and the connect fails. I checked the values of HttpClient.DefaultProxy:
                
In MAUI app:
                HttpClient.DefaultProxy{System.Net.Http.HttpNoProxy}
                comparing that to .Net7 App, it's set to MacProxy:
                HttpClient.DefaultProxy{System.Net.Http.MacProxy}
                for reference:
                https://github.com/dotnet/dotnet/blob/main/src/runtime/src/libraries/System.Net.WebSockets.Client/src/System/Net/WebSockets/WebSocketHandle.Managed.cs#L35
                in customer situation, WPAD (Web Proxy Auto-Discovery) is used to configure internal laptops.
                
while testing on MS VPN, the code works. It's worth considering whether the MS VPN proxy setup differs from WPAD,
                we need to get Proxy Url/object into MAUI app for all different VPN configuration and create WebProxy object and set it to ClientWebSocket.
                Steps to Reproduce
                download the repro to Mac connected via VPN with WPAD configured.
                
in the repro app, click on button to start test. the call to ClientWebSocket.ConnectAsync() will be stuck
                Link to public reproduction project repository
                https://github.com/linkaiyu/ClientWebSocket
                Version with bug
                7.0.49
                Last version that worked well
                Unknown/Other
                Affected platforms
                macOS
                Affected platform versions
                No response
                Did you find any workaround?
                short term workaround is to create a webproxy for the connection, but for long term when the app is going to be released to the public, the short term solution won't meet the needs
                Relevant log output
                No response
                Metadata
                Metadata
                Assignees
                Labels
                area-System.Netin-prThere is an active PR which will close this issue when it is mergedos-maccatalystMacCatalyst OS
                Type
                No type
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                No projects
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