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Web Sockets

Bidirectional communication technology for web apps

Spec https://html.spec.whatwg.org/multipage/comms.html#network
Status WHATWG Living Standard
IE Edge Firefox Chrome Safari Opera
      73    
    65 72    
    64 71 TP  
11 18 63 70 12 56
10 17 62 69 11.1 55
9 16 61 68 11 54
8 15 60 67 10.1 53
Show all
7 14 59 66 10 52
6 13 58 65 9.1 51
5.5 12 57 64 9 50
    56 63 8 49
    55 62 7.1 48
    54 61 7 47
    53 60 6.1 (2) 46
    52 59 6 (2) 45
    51 58 5.1 (1) 44
    50 57 5 (1) 43
    49 56 4 42
    48 55 3.2 41
    47 54 3.1 40
    46 53   39
    45 52   38
    44 51   37
    43 50   36
    42 49   35
    41 48   34
    40 47   33
    39 46   32
    38 45   31
    37 44   30
    36 43   29
    35 42   28
    34 41   27
    33 40   26
    32 39   25
    31 38   24
    30 37   23
    29 36   22
    28 35   21
    27 34   20
    26 33   19
    25 32   18
    24 31   17
    23 30   16
    22 29   15
    21 28   12.1
    20 27   12 (1)
    19 26   11.6 (1)
    18 25   11.5 (1)
    17 24   11.1 (1)
    16 23   11 (1)
    15 22   10.6
    14 21   10.5
    13 20   10.0-10.1
    12 19   9.5-9.6
    11 18   9
    10 (2,*) 17    
    9 (2,*) 16    
    8 (2,*) 15 (2)    
    7 (2,*) 14 (1)    
    6 (2,*) 13 (1)    
    5 (1) 12 (1)    
    4 (1) 11 (1)    
    3.6 10 (1)    
    3.5 9 (1)    
    3 8 (1)    
    2 7 (1)    
      6 (1)    
      5 (1)    
      4 (1)    
iOS Safari Opera Mini Android Browser Blackberry Browser Opera Mobile Android Chrome Android Firefox IE Mobile Android UC Browser Samsung Internet QQ Browser Baidu Browser
12 all 67 10 46 70 63 11 11.8 7.2 1.2 7.12
11.3-11.4   4.4.3-4.4.4 7 (1) 12.1     10   6.2    
11.0-11.2   4.4   12 (1)         5    
10.3   4.2-4.3   11.5 (1)         4    
Show all
10.0-10.2   4.1   11.1 (1)              
9.3   4   11 (1)              
9.0-9.2   3   10              
8.1-8.4   2.3                  
8   2.2                  
7.0-7.1   2.1                  
6.0-6.1                      
5.0-5.1 (1)                      
4.2-4.3 (1)                      
4.0-4.1                      
3.2                      

Notes

Reported to be supported in some Android 4.x browsers, including Sony Xperia S, Sony TX and HTC.

  1. Partial support in older browsers refers to the websockets implementation using an older version of the protocol and/or the implementation being disabled by default (due to security issues with the older protocol).

  2. Partial support in older browsers refers to lacking support for binary data.

* Partial support with prefix.

Bugs

  • Firefox 37 and lower cannot host a WebSocket within a WebWorker context

Resources

Data by caniuse.com
Licensed under the Creative Commons Attribution License v4.0.
http://caniuse.com/#feat=websockets