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curl tricks

Timeout 

curl -ks --connect-timeout 5 <URL>

User-agent 

CURL_USERAGENT="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36"
test -n "$CURL_USERAGENT" && curl_useragent="-A $CURL_USERAGENT"
curl $curl_useragent <URL>

proxy

As option

sock5 

curl -x socks5://192.168.1.1:8888

http 

curl -x http://192.168.1.1:8888

As env

export http_proxy="http://192.168.1.1:8888"
export https_proxy="http://192.168.1.1:8888"

curl <URL>

Send multi-line message by json

name="foo"

message="$@"
message="${message//$'\r'/}"  
message="${message//$'\n'/\\n}"

json="{'message':'${message}','name':'$name'}"
json=$(echo "$json" | tr "'" '"')

curl -s -X POST -H "Content-Type: application/json" "$URL" -d "$json"

Basic Authorization

U='YOUR-NAME'
P='YOUR-PASSWORD'
A=$(echo -ne "$U:$P"|base64 --wrap 0)

curl --header "Authorization: Basic $A" http://foo.com/

Get http code

d=$(curl -s -w "\n%{response_code}" $URL )
response_content=$(echo "$d" | sed '$ d' )
response_code=$(echo "$d" | tail -n1 | xargs)
echo $response_content
echo $response_code