this is a PoC to test HTTP1.1 vs HTTP/2 (H2C-no encryption) with golang

a binary is released

golang std lib http/2 throughput speed is much slower than http/1

go run main.go on Intel(R) Core(TM) i7-8559U CPU @ 2.70GHz gives:

server created and listening at 8765 (http1.1)
server created and listening at 9876 (http/2 cleartext)
downloading http://localhost:8765/10000000000
receiving data with HTTP/1.1
server sent 10000000000 bytes in 1.448894821s = 55.2 Gbps (262144 chunks)
client received 10000000000 bytes in 1.448774771s = 55.2 Gbps, 189969 write ops, 2360568 buff 
downloading http://localhost:9876/10000000000
receiving data with HTTP/2.0
server sent 10000000000 bytes in 8.313647415s = 9.6 Gbps (262144 chunks)
client received 10000000000 bytes in 8.313532464s = 9.6 Gbps, 429444 write ops, 966656 buff 

so roughly x5 slower

with curl: launch go run main.go -s and in a separate shell:

curl -o /dev/null  http://localhost:8765/10000000000
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                             Dload  Upload   Total   Spent    Left  Speed
100 9536M  100 9536M    0     0  5397M      0  0:00:01  0:00:01 --:--:-- 5394M    

curl -o /dev/null --http2-prior-knowledge http://localhost:9876/10000000000
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                Dload  Upload   Total   Spent    Left  Speed
100 9536M  100 9536M    0     0   958M      0  0:00:09  0:00:09 --:--:--  974M

With nspeed: download nspeed at http://nspeed.app/ or execute nspeed-batch.sh

http/1.1 vs http/2 no encryption:

# http/1.1
./nspeed_linux_amd64 server -n 1 get -w 1 http://localhost:7333/10g
# http/2 clear text
./nspeed_linux_amd64 server -n 1 get -h2c -w 1 http://localhost:7333/10g

http/1.1 vs http/2 with encryption:

# http/1.1
./nspeed_linux_amd64 server -self -n 1 get -self -http11 -w 1 https://localhost:7333/10g
# http/2
./nspeed_linux_amd64 server -self -n 1 get -self -w 1 https://localhost:7333/10g

example results: see nspeed.results.txt

Caddy

#https/2
curl -o /dev/null https://localhost:8082/10G.iso
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                Dload  Upload   Total   Spent    Left  Speed
100 9536M  100 9536M    0     0   484M      0  0:00:19  0:00:19 --:--:--  483M

#https/1.1
curl -o /dev/null --http1.1 https://localhost:8082/10G.iso
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                Dload  Upload   Total   Spent    Left  Speed
100 9536M  100 9536M    0     0   929M      0  0:00:10  0:00:10 --:--:--  935M

#http/1.1 (no encryption - max throughput reference)
curl -o /dev/null http://localhost:8081/10G.iso
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                Dload  Upload   Total   Spent    Left  Speed
100 9536M  100 9536M    0     0  1672M      0  0:00:05  0:00:05 --:--:-- 1687M