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How to change the HTTP Header? #105

Mapaler opened this issue Jul 28, 2017 · 2 comments

How to change the HTTP Header? #105

Mapaler opened this issue Jul 28, 2017 · 2 comments


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@Mapaler Mapaler commented Jul 28, 2017

My school, in order to make money, forbids students to share wired broadband with mobile phones.

I need to change "Android" in User-Agent to "Windows" to disguise computer access.
I used Fidder2‘s CustomRules.js - function OnBeforeRequest to replace all of the android in UA.
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It takes a Windows computer to open all the time to run Fidder.

I try to setup a proxy on a router with OpenWrt. I install

I don't know how to partial replace "Android" , and I use "AddHeader", there are two User-Agent
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@rofl0r rofl0r commented Jul 29, 2017

try additionally this patch:

diff --git a/src/reqs.c b/src/reqs.c
index 990152a..7007335 100644
--- a/src/reqs.c
+++ b/src/reqs.c
@@ -598,7 +598,8 @@ add_header_to_connection (hashmap_t hashofheaders, char *header, size_t len)
         /* Calculate the new length of just the data */
         len -= sep - header - 1;
+       if(!strcmp(header, "User-Agent") && strstr("Android", sep))
+               return 0;
         return hashmap_insert (hashofheaders, header, sep, len);

there is no built-in possibility to do what you want, but i guess it could be implemented as "ReplaceHeader"


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@Mapaler Mapaler commented Jul 29, 2017

Thanks, I'm not professional, don't know how to build to OpenWrt version.(I install at Package)
I think you can add a "RemoveHeader" , and then "RemoveHeader" + "AddHeader" = "ReplaceHeader"

I used Privoxy to solve my problem.
Add to user.action

# 替换Header里的安卓的行为,调用叫android的filter

Add to user.filter

#把“Android”替换为“Windows NT”的filter
CLIENT-HEADER-FILTER: android Replace all "Android" with "Windows NT"

s@^(User-Agent:.*)\bWindows NT\b(.*)@$1Android$2@ig
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