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https://github.com/gui/trafficserver-debugging
https://github.com/gui/trafficserver-debugging
Last synced: 16 days ago
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- Host: GitHub
- URL: https://github.com/gui/trafficserver-debugging
- Owner: GUI
- Created: 2023-09-10T23:53:21.000Z (about 1 year ago)
- Default Branch: main
- Last Pushed: 2024-04-17T15:19:14.000Z (7 months ago)
- Last Synced: 2024-06-11T00:56:48.180Z (5 months ago)
- Language: Roff
- Size: 6.84 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Traffic Server Debugging
1. Bring up nginx and Traffic Server containers:
```sh
docker compose up
```
2. Generate a ~15MB file to use as the request body:
```sh
base64 /dev/urandom | head -c 15000000 > body.txt
```
3. Test against `[nginx proxy] => [trafficserver 9.1.4] => [nginx server]`:
```sh
for i in {1..20}; do curl -v -d @body.txt -H "Expect:" -X PUT "http://localhost:8914/?i=$i"; done
```
4. Test against `[nginx proxy] => [trafficserver 9.2.0] => [nginx server]`:
```sh
for i in {1..20}; do curl -v -d @body.txt -H "Expect:" -X PUT "http://localhost:8920/?i=$i"; done
```
5. Test against `[nginx proxy] => [trafficserver 9.2.2] => [nginx server]`:
```sh
for i in {1..20}; do curl -v -d @body.txt -H "Expect:" -X PUT "http://localhost:8922/?i=$i"; done
```
6. Test against `[nginx proxy] => [trafficserver 9.2.3] => [nginx server]`:
```sh
for i in {1..20}; do curl -v -d @body.txt -H "Expect:" -X PUT "http://localhost:8923/?i=$i"; done
```
7. Test against `[nginx proxy] => [trafficserver 9.2.4] => [nginx server]`:
```sh
for i in {1..20}; do curl -v -d @body.txt -H "Expect:" -X PUT "http://localhost:8924/?i=$i"; done
```
## Expected Behavior: Traffic Server 9.1.4
Under Traffic Server 9.1.4, all of the responses received back are the `413 Request Entity Too Large` error generated by the underlying nginx server. This is the expected behavior.
```
* Trying 127.0.0.1:8914...
* Connected to localhost (127.0.0.1) port 8914 (#0)
> PUT /?i=1 HTTP/1.1
> Host: localhost:8914
> User-Agent: curl/8.1.2
> Accept: */*
> Content-Length: 15000000
> Content-Type: application/x-www-form-urlencoded
>
* We are completely uploaded and fine
< HTTP/1.1 413 Request Entity Too Large
< Server: nginx/1.25.2
< Date: Sun, 10 Sep 2023 23:14:51 GMT
< Content-Type: text/html
< Content-Length: 183
< Connection: keep-alive
< Age: 0
<
413 Request Entity Too Large
413 Request Entity Too Large
nginx/1.25.2
* Connection #0 to host localhost left intact
* Trying 127.0.0.1:8914...
* Connected to localhost (127.0.0.1) port 8914 (#0)
> PUT /?i=2 HTTP/1.1
> Host: localhost:8914
> User-Agent: curl/8.1.2
> Accept: */*
> Content-Length: 15000000
> Content-Type: application/x-www-form-urlencoded
>
* We are completely uploaded and fine
< HTTP/1.1 413 Request Entity Too Large
< Server: nginx/1.25.2
< Date: Sun, 10 Sep 2023 23:14:51 GMT
< Content-Type: text/html
< Content-Length: 183
< Connection: keep-alive
< Age: 0
<
413 Request Entity Too Large
413 Request Entity Too Large
nginx/1.25.2
* Connection #0 to host localhost left intact
* Trying 127.0.0.1:8914...
* Connected to localhost (127.0.0.1) port 8914 (#0)
> PUT /?i=3 HTTP/1.1
> Host: localhost:8914
> User-Agent: curl/8.1.2
> Accept: */*
> Content-Length: 15000000
> Content-Type: application/x-www-form-urlencoded
>
* We are completely uploaded and fine
< HTTP/1.1 413 Request Entity Too Large
< Server: nginx/1.25.2
< Date: Sun, 10 Sep 2023 23:14:51 GMT
< Content-Type: text/html
< Content-Length: 183
< Connection: keep-alive
< Age: 0
<
413 Request Entity Too Large
413 Request Entity Too Large
nginx/1.25.2
* Connection #0 to host localhost left intact
* Trying 127.0.0.1:8914...
* Connected to localhost (127.0.0.1) port 8914 (#0)
> PUT /?i=4 HTTP/1.1
> Host: localhost:8914
> User-Agent: curl/8.1.2
> Accept: */*
> Content-Length: 15000000
> Content-Type: application/x-www-form-urlencoded
>
* We are completely uploaded and fine
< HTTP/1.1 413 Request Entity Too Large
< Server: nginx/1.25.2
< Date: Sun, 10 Sep 2023 23:14:51 GMT
< Content-Type: text/html
< Content-Length: 183
< Connection: keep-alive
< Age: 0
<
413 Request Entity Too Large
413 Request Entity Too Large
nginx/1.25.2
* Connection #0 to host localhost left intact
* Trying 127.0.0.1:8914...
* Connected to localhost (127.0.0.1) port 8914 (#0)
> PUT /?i=5 HTTP/1.1
> Host: localhost:8914
> User-Agent: curl/8.1.2
> Accept: */*
> Content-Length: 15000000
> Content-Type: application/x-www-form-urlencoded
>
* We are completely uploaded and fine
< HTTP/1.1 413 Request Entity Too Large
< Server: nginx/1.25.2
< Date: Sun, 10 Sep 2023 23:14:52 GMT
< Content-Type: text/html
< Content-Length: 183
< Connection: keep-alive
< Age: 0
<
413 Request Entity Too Large
413 Request Entity Too Large
nginx/1.25.2
* Connection #0 to host localhost left intact
```
## Unexpected Behavior: Traffic Server 9.2.x
In both versions of Traffic Server 9.2.x, you'll sometimes get the expected `413 Request Entity Too Large` error back, but then a decent number of `502 Bad Gateway` errors will also be generated by the `nginx proxy` layer. The `nginx proxy` layer reports errors like the following (seemingly indicating that the connection to Traffic Server has been closed unexpectedly):
```
writev() failed (104: Connection reset by peer) while sending request to upstream, client: 172.27.0.1, server: , request: "PUT /?i=3 HTTP/1.1", upstream: "http://172.27.0.5:8080/?i=3", host: "localhost:8922"
```
```
* Trying 127.0.0.1:8922...
* Connected to localhost (127.0.0.1) port 8922 (#0)
> PUT /?i=1 HTTP/1.1
> Host: localhost:8922
> User-Agent: curl/8.1.2
> Accept: */*
> Content-Length: 15000000
> Content-Type: application/x-www-form-urlencoded
>
* We are completely uploaded and fine
< HTTP/1.1 502 Bad Gateway
< Server: nginx/1.25.2
< Date: Sun, 10 Sep 2023 23:16:22 GMT
< Content-Type: text/html
< Content-Length: 157
< Connection: keep-alive
<
502 Bad Gateway
502 Bad Gateway
nginx/1.25.2
* Connection #0 to host localhost left intact
* Trying 127.0.0.1:8922...
* Connected to localhost (127.0.0.1) port 8922 (#0)
> PUT /?i=2 HTTP/1.1
> Host: localhost:8922
> User-Agent: curl/8.1.2
> Accept: */*
> Content-Length: 15000000
> Content-Type: application/x-www-form-urlencoded
>
* We are completely uploaded and fine
< HTTP/1.1 413 Request Entity Too Large
< Server: nginx/1.25.2
< Date: Sun, 10 Sep 2023 23:16:23 GMT
< Content-Type: text/html
< Content-Length: 183
< Connection: keep-alive
< Age: 0
<
413 Request Entity Too Large
413 Request Entity Too Large
nginx/1.25.2
* Connection #0 to host localhost left intact
* Trying 127.0.0.1:8922...
* Connected to localhost (127.0.0.1) port 8922 (#0)
> PUT /?i=3 HTTP/1.1
> Host: localhost:8922
> User-Agent: curl/8.1.2
> Accept: */*
> Content-Length: 15000000
> Content-Type: application/x-www-form-urlencoded
>
* We are completely uploaded and fine
< HTTP/1.1 502 Bad Gateway
< Server: nginx/1.25.2
< Date: Sun, 10 Sep 2023 23:16:23 GMT
< Content-Type: text/html
< Content-Length: 157
< Connection: keep-alive
<
502 Bad Gateway
502 Bad Gateway
nginx/1.25.2
* Connection #0 to host localhost left intact
* Trying 127.0.0.1:8922...
* Connected to localhost (127.0.0.1) port 8922 (#0)
> PUT /?i=4 HTTP/1.1
> Host: localhost:8922
> User-Agent: curl/8.1.2
> Accept: */*
> Content-Length: 15000000
> Content-Type: application/x-www-form-urlencoded
>
* We are completely uploaded and fine
< HTTP/1.1 502 Bad Gateway
< Server: nginx/1.25.2
< Date: Sun, 10 Sep 2023 23:16:23 GMT
< Content-Type: text/html
< Content-Length: 157
< Connection: keep-alive
<
502 Bad Gateway
502 Bad Gateway
nginx/1.25.2
* Connection #0 to host localhost left intact
* Trying 127.0.0.1:8922...
* Connected to localhost (127.0.0.1) port 8922 (#0)
> PUT /?i=5 HTTP/1.1
> Host: localhost:8922
> User-Agent: curl/8.1.2
> Accept: */*
> Content-Length: 15000000
> Content-Type: application/x-www-form-urlencoded
>
* We are completely uploaded and fine
< HTTP/1.1 502 Bad Gateway
< Server: nginx/1.25.2
< Date: Sun, 10 Sep 2023 23:16:23 GMT
< Content-Type: text/html
< Content-Length: 157
< Connection: keep-alive
<
502 Bad Gateway
502 Bad Gateway
nginx/1.25.2
* Connection #0 to host localhost left intact
```