How to send a header using a HTTP request through a curl call

Question

I wish to send a header to my Apache server on a Linux box   How can I achieve this via a curl call

User · Answer

In anaconda envirement through windows the commands should be   GET  for ex    curl exe http   127 0 0 1 5000 books    Post or Patch the data for ex   curl exe http   127 0 0 1 5000 books 8 -X PATCH -H  Content-Type  application json  -d     rating     2        PS  Add backslash for json data to avoid this type of error    Failed to decode JSON object  Expecting value  line 1 column 1  char 0   and use curl exe instead of curl only to avoid this problem    Invoke-WebRequest   Cannot bind parameter  Headers   Cannot convert the  Content-Type  application json  value of type  System String  to type  System Collections IDictionary   At line 1 char 48       0 1 5000 books 8 -X PATCH -H  Content-Type  application json  -d                                                                                    CategoryInfo            InvalidArgument       Invoke-WebRequest   ParameterBindingException       FullyQualifiedErrorId   CannotConvertArgumentNoMessage Microsoft PowerShell Commands InvokeWebRequestCommand

User · Answer

Use -H or --header   Man page  http   curl haxx se docs manpage html -H

User · Answer

Use -H or --header   Man page  http   curl haxx se docs manpage html -H

User · Answer

You can also send multiple headers  data  JSON for example   and specify Call method  POST GET  into a single CUrl call like this    curl -X POST Get or whatever      http   your url com api endpoint     -H  Content-Type  application json      -H  header-element1  header-data1      -H  header-element2  header-data2            more headers                    -d       JsonExArray                  json prop    1                       json prop    2

User · Answer

I ve switched from curl to Httpie  the syntax looks like   http http   myurl HeaderName value

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In PHP   curl setopt  ch  CURLOPT HTTPHEADER  array  HeaderName HeaderValue       or you can set multiple   curl setopt  ch  CURLOPT HTTPHEADER  array  HeaderName HeaderValue    HeaderName2 HeaderValue2

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Use -H or --header   Man page  http   curl haxx se docs manpage html -H

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man curl      -H --header  lt header gt             HTTP   Extra header to use when getting a web page  You may specify           any number of extra headers  Note that if you should  add  a  custom           header that has the same name as one of the internal ones curl would           use  your externally set header will be used instead of the internal           one   This  allows  you  to make even trickier stuff than curl would           normally do  You should not replace internally set  headers  without           knowing  perfectly well what you re doing  Remove an internal header           by giving a replacement without content on the  right  side  of  the           colon  as in  -H  Host               curl  will  make sure that each header you add replace get sent with           the proper end of line marker  you should thus not  add  that  as  a           part  of the header content  do not add newlines or carriage returns           they will only mess things up for you             See also the -A --user-agent and -e --referer options             This option can be used multiple times to add replace remove  multi-           ple headers    Example   curl --header  X-MyHeader  123  www google com   You can see the request that curl sent by adding the -v option

User · Answer

GET  multiple parameters    curl -X  GET  http   localhost 3000 action result1 gh amp result2 ghk    or  curl --request  GET  http   localhost 3000 action result1 gh amp result2 ghk    or  curl   http   localhost 3000 action result1 gh amp result2 ghk    or  curl -i -H  Application json  -H  Content-type  application json    http   localhost 3000 action result1 gh amp result2 ghk

User · Answer

In anaconda envirement through windows the commands should be   GET  for ex    curl exe http   127 0 0 1 5000 books    Post or Patch the data for ex   curl exe http   127 0 0 1 5000 books 8 -X PATCH -H  Content-Type  application json  -d     rating     2        PS  Add backslash for json data to avoid this type of error    Failed to decode JSON object  Expecting value  line 1 column 1  char 0   and use curl exe instead of curl only to avoid this problem    Invoke-WebRequest   Cannot bind parameter  Headers   Cannot convert the  Content-Type  application json  value of type  System String  to type  System Collections IDictionary   At line 1 char 48       0 1 5000 books 8 -X PATCH -H  Content-Type  application json  -d                                                                                    CategoryInfo            InvalidArgument       Invoke-WebRequest   ParameterBindingException       FullyQualifiedErrorId   CannotConvertArgumentNoMessage Microsoft PowerShell Commands InvokeWebRequestCommand

User · Answer

In case you want send your custom headers  you can do it this way   curl -v -H    custom header   custom header value   http   localhost 3000 action result1 gh amp result2 ghk

User · Answer

I use Postman    Execute whatever call you want to do  Then  postman provides a handy tool to show the curl code    Run it in the terminal

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GET  multiple parameters    curl -X  GET  http   localhost 3000 action result1 gh amp result2 ghk    or  curl --request  GET  http   localhost 3000 action result1 gh amp result2 ghk    or  curl   http   localhost 3000 action result1 gh amp result2 ghk    or  curl -i -H  Application json  -H  Content-type  application json    http   localhost 3000 action result1 gh amp result2 ghk

User · Answer

man curl      -H --header  lt header gt             HTTP   Extra header to use when getting a web page  You may specify           any number of extra headers  Note that if you should  add  a  custom           header that has the same name as one of the internal ones curl would           use  your externally set header will be used instead of the internal           one   This  allows  you  to make even trickier stuff than curl would           normally do  You should not replace internally set  headers  without           knowing  perfectly well what you re doing  Remove an internal header           by giving a replacement without content on the  right  side  of  the           colon  as in  -H  Host               curl  will  make sure that each header you add replace get sent with           the proper end of line marker  you should thus not  add  that  as  a           part  of the header content  do not add newlines or carriage returns           they will only mess things up for you             See also the -A --user-agent and -e --referer options             This option can be used multiple times to add replace remove  multi-           ple headers    Example   curl --header  X-MyHeader  123  www google com   You can see the request that curl sent by adding the -v option

User · Answer

In case you want send your custom headers  you can do it this way   curl -v -H    custom header   custom header value   http   localhost 3000 action result1 gh amp result2 ghk

User · Answer

You can also send multiple headers  data  JSON for example   and specify Call method  POST GET  into a single CUrl call like this    curl -X POST Get or whatever      http   your url com api endpoint     -H  Content-Type  application json      -H  header-element1  header-data1      -H  header-element2  header-data2            more headers                    -d       JsonExArray                  json prop    1                       json prop    2

User · Answer

In PHP   curl setopt  ch  CURLOPT HTTPHEADER  array  HeaderName HeaderValue       or you can set multiple   curl setopt  ch  CURLOPT HTTPHEADER  array  HeaderName HeaderValue    HeaderName2 HeaderValue2

User · Answer

GET   with JSON   curl -i -H  Accept  application json  -H  Content-Type  application json  http   hostname resource   with XML   curl -H  Accept  application xml  -H  Content-Type  application xml  -X GET http   hostname resource   POST   For posting data   curl --data  param1 value1 amp param2 value2  http   hostname resource   For file upload   curl --form  fileupload  filename txt  http   hostname resource   RESTful HTTP Post   curl -X POST -d  filename http   hostname resource   For logging into a site  auth    curl -d  username admin amp password admin amp submit Login  --dump-header headers http   localhost Login curl -L -b headers http   localhost

User · Answer

I ve switched from curl to Httpie  the syntax looks like   http http   myurl HeaderName value

User · Answer

I use Postman    Execute whatever call you want to do  Then  postman provides a handy tool to show the curl code    Run it in the terminal

User · Answer

man curl      -H --header  lt header gt             HTTP   Extra header to use when getting a web page  You may specify           any number of extra headers  Note that if you should  add  a  custom           header that has the same name as one of the internal ones curl would           use  your externally set header will be used instead of the internal           one   This  allows  you  to make even trickier stuff than curl would           normally do  You should not replace internally set  headers  without           knowing  perfectly well what you re doing  Remove an internal header           by giving a replacement without content on the  right  side  of  the           colon  as in  -H  Host               curl  will  make sure that each header you add replace get sent with           the proper end of line marker  you should thus not  add  that  as  a           part  of the header content  do not add newlines or carriage returns           they will only mess things up for you             See also the -A --user-agent and -e --referer options             This option can be used multiple times to add replace remove  multi-           ple headers    Example   curl --header  X-MyHeader  123  www google com   You can see the request that curl sent by adding the -v option

User · Answer

GET   with JSON   curl -i -H  Accept  application json  -H  Content-Type  application json  http   hostname resource   with XML   curl -H  Accept  application xml  -H  Content-Type  application xml  -X GET http   hostname resource   POST   For posting data   curl --data  param1 value1 amp param2 value2  http   hostname resource   For file upload   curl --form  fileupload  filename txt  http   hostname resource   RESTful HTTP Post   curl -X POST -d  filename http   hostname resource   For logging into a site  auth    curl -d  username admin amp password admin amp submit Login  --dump-header headers http   localhost Login curl -L -b headers http   localhost

User · Answer

man curl      -H --header  lt header gt             HTTP   Extra header to use when getting a web page  You may specify           any number of extra headers  Note that if you should  add  a  custom           header that has the same name as one of the internal ones curl would           use  your externally set header will be used instead of the internal           one   This  allows  you  to make even trickier stuff than curl would           normally do  You should not replace internally set  headers  without           knowing  perfectly well what you re doing  Remove an internal header           by giving a replacement without content on the  right  side  of  the           colon  as in  -H  Host               curl  will  make sure that each header you add replace get sent with           the proper end of line marker  you should thus not  add  that  as  a           part  of the header content  do not add newlines or carriage returns           they will only mess things up for you             See also the -A --user-agent and -e --referer options             This option can be used multiple times to add replace remove  multi-           ple headers    Example   curl --header  X-MyHeader  123  www google com   You can see the request that curl sent by adding the -v option

User · Answer

Use -H or --header   Man page  http   curl haxx se docs manpage html -H

[curl] How to send a header using a HTTP request through a curl call?

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