deletion: drop webdocket enable control in proxy-rewrite plugin

doc/plugins/proxy-rewrite-cn.md

@@ -29,7 +29,6 @@
 |uri             |可选| 转发到上游的新 `uri` 地址|
 |regex_uri       |可选| 转发到上游的新 `uri` 地址, 使用正则表达式匹配来自客户端的uri，当匹配成功后使用模板替换转发到上游的uri, 未匹配成功时将客户端请求的uri转发至上游。当`uri`和`regex_uri`同时存在时，`uri`优先被使用。例如：["^/iresty/(.*)/(.*)/(.*)","/$1-$2-$3"] 第一个元素代表匹配来自客户端请求的uri正则表达式，第二个元素代表匹配成功后转发到上游的uri模板|
 |host            |可选| 转发到上游的新 `host` 地址，例如：`iresty.com` |
-|enable_websocket|可选| 是否启用 `websocket`（布尔值），默认不启用|
 |headers         |可选| 转发到上游的新`headers`，可以设置多个。头信息如果存在将重写，不存在则添加。想要删除某个 header 的话，把对应的值设置为空字符串即可|
 
 ### 示例
@@ -47,7 +46,6 @@ curl http://127.0.0.1:9080/apisix/admin/routes/1  -H 'X-API-KEY: edd1c9f034335f1
             "uri": "/test/home.html",
             "scheme": "http",
             "host": "iresty.com",
-            "enable_websocket": true,
             "headers": {
                 "X-Api-Version": "v1",
                 "X-Api-Engine": "apisix",

doc/plugins/proxy-rewrite.md

@@ -37,7 +37,6 @@ upstream proxy info rewrite plugin.
 |uri             |optional| Upstream new `uri` forwarding address.|
 |regex_uri       |optional| Upstream new `uri` forwarding address. Use regular expression to match uri from client, when the match is successful, the uri template will be forwarded upstream. If the match is not successful, the uri from the client will be forwarded to the upstream. When `uri` and` regex_uri` are both exist, `uri` is used first. For example: [" ^/iresty/(.*)/(.*)/(.*)", "/$1-$2-$3"], the first element represents the matching regular expression and the second element represents the uri template that is forwarded to the upstream.|
 |host            |optional| Upstream new `host` forwarding address, example `iresty.com`. |
-|enable_websocket|optional| enable `websocket`(boolean), default `false`.|
 |headers         |optional| Forward to the new `headers` of the upstream, can set up multiple. If it exists, will rewrite the header, otherwise will add the header. You can set the corresponding value to an empty string to remove a header.|
 
 ## How To Enable
@@ -54,7 +53,6 @@ curl http://127.0.0.1:9080/apisix/admin/routes/1  -H 'X-API-KEY: edd1c9f034335f1
             "uri": "/test/home.html",
             "scheme": "http",
             "host": "iresty.com",
-            "enable_websocket": true,
             "headers": {
                 "X-Api-Version": "v1",
                 "X-Api-Engine": "apisix",

lua/apisix/plugins/proxy-rewrite.lua

@@ -54,11 +54,6 @@ local schema = {
             type    = "string",
             enum    = {"http", "https"}
         },
-        enable_websocket = {
-            description = "enable websocket for request",
-            type        = "boolean",
-            default     = false
-        },
         headers = {
             description = "new headers for request",
             type = "object",
@@ -155,11 +150,6 @@ function _M.rewrite(conf, ctx)
         ctx.var.upstream_uri = upstream_uri
     end
 
-    if conf.enable_websocket then
-        ctx.var.upstream_upgrade    = ctx.var.http_upgrade
-        ctx.var.upstream_connection = ctx.var.http_connection
-    end
-
     if conf.headers_arr then
         local field_cnt = #conf.headers_arr
         for i = 1, field_cnt, 2 do