Mercurial > hg > nginx
diff src/http/ngx_http_header_filter_module.c @ 5072:7fa7e60a7f66
Proxy: support for connection upgrade (101 Switching Protocols).
This allows to proxy WebSockets by using configuration like this:
location /chat/ {
proxy_pass http://backend;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
Connection upgrade is allowed as long as it was requested by a client
via the Upgrade request header.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Mon, 18 Feb 2013 13:50:52 +0000 |
| parents | 812c4765c954 |
| children | 941c5e3561ed |
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--- a/src/http/ngx_http_header_filter_module.c +++ b/src/http/ngx_http_header_filter_module.c @@ -379,7 +379,10 @@ ngx_http_header_filter(ngx_http_request_ len += sizeof("Transfer-Encoding: chunked" CRLF) - 1; } - if (r->keepalive) { + if (r->headers_out.status == NGX_HTTP_SWITCHING_PROTOCOLS) { + len += sizeof("Connection: upgrade" CRLF) - 1; + + } else if (r->keepalive) { len += sizeof("Connection: keep-alive" CRLF) - 1; /* @@ -548,7 +551,11 @@ ngx_http_header_filter(ngx_http_request_ sizeof("Transfer-Encoding: chunked" CRLF) - 1); } - if (r->keepalive) { + if (r->headers_out.status == NGX_HTTP_SWITCHING_PROTOCOLS) { + b->last = ngx_cpymem(b->last, "Connection: upgrade" CRLF, + sizeof("Connection: upgrade" CRLF) - 1); + + } else if (r->keepalive) { b->last = ngx_cpymem(b->last, "Connection: keep-alive" CRLF, sizeof("Connection: keep-alive" CRLF) - 1);