tokers commented on issue #5559:
URL: https://github.com/apache/apisix/issues/5559#issuecomment-974982887
> # route config
> ```json
> {
> "uri": "/testslow",
> "name": "testslow",
> "methods": [
> "GET",
> "POST",
> "PUT",
> "DELETE",
> "PATCH",
> "HEAD",
> "OPTIONS",
> "CONNECT",
> "TRACE"
> ],
> "plugins": {
> "proxy-rewrite": {
> "regex_uri": [
> "/(.*)",
> "/get?foo1=bar1&foo2=$1"
> ]
> }
> },
> "upstream": {
> "nodes": [
> {
> "host": "httpbin.org",
> "port": 80,
> "weight": 1
> }
> ],
> "timeout": {
> "connect": 6,
> "send": 6,
> "read": 6
> },
> "type": "roundrobin",
> "scheme": "http",
> "pass_host": "node",
> "keepalive_pool": {
> "idle_timeout": 60,
> "requests": 1000,
> "size": 320
> }
> },
> "status": 1
> }
> ```
>
> # tcpdump when use firefox
>
>
> # tcpdump when use curl
>
>
>
>
> # It looks like a connection problem
1. Do you maintain the backend node `httpbin.org` privately, or just use the
online one? If this is the public site, you should consider the network issues.
2. It seems the subsequent requests happened without the front TCP 3-way
handshakes, making sure whether the slow request you said suffered from the TCP
3-way handshake, and measuring the cost time.
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