Opened 3 years ago
Last modified 3 years ago
#2229 closed defect
Grpc Upstream timeout — at Initial Version
| Reported by: | Owned by: | ||
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | documentation | Version: | 1.19.x |
| Keywords: | grpc, c#, java, upstream, timeout | Cc: | |
| uname -a: | Windows 10 Pro | ||
| nginx -V: |
nginx version: nginx/1.21.1
built by cl 16.00.40219.01 for 80x86 built with OpenSSL 1.1.1k 25 Mar 2021 TLS SNI support enabled configure arguments: --with-cc=cl --builddir=objs.msvc8 --with-debug --prefix= --conf-path=conf/nginx.conf --pid-path=logs/nginx.pid --http-log-path=logs/access.log --error-log-path=logs/error.log --sbin-path=nginx.exe --http-client-body-temp-path=temp/client_body_temp --http-proxy-temp-path=temp/proxy_temp --http-fastcgi-temp-path=temp/fastcgi_temp --http-scgi-temp-path=temp/scgi_temp --http-uwsgi-temp-path=temp/uwsgi_temp --with-cc-opt=-DFD_SETSIZE=1024 --with-pcre=objs.msvc8/lib/pcre-8.44 --with-zlib=objs.msvc8/lib/zlib-1.2.11 --with-http_v2_module --with-http_realip_module --with-http_addition_module --with-http_sub_module --with-http_dav_module --with-http_stub_status_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_auth_request_module --with-http_random_index_module --with-http_secure_link_module --with-http_slice_module --with-mail --with-stream --with-openssl=objs.msvc8/lib/openssl-1.1.1k --with-openssl-opt='no-asm no-tests -D_WIN32_WINNT=0x0501' --with-http_ssl_module --with-mail_ssl_module --with-stream_ssl_module |
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Description
So, i've got these things : a client, a server, nginx. They all run on the same machine.
The client does some network scanning and is supposed to send it's results to the server.
The server is supposed to take the scanning-results and put them into a database.
The server is based on ASP.Net.
The client and server use the following packages
- grpc-dotnet - https://github.com/grpc/grpc-dotnet
- protobuf-net - https://github.com/protobuf-net/protobuf-net
Both also use the SSL certificate and generally they both work as expected.
The nginx proxy is supposed to be used as a Reverse-Proxy -> Clients only need to know one Endpoint for all their Requests. Nginx is only configured to pass grpc requests, nothing else.
First of all, almost all grpc requests do work. But they stop working, if the request gets too big. I dont know the exact size, but it must be under 180kb.
(180kb is the size of the scan results.In a test, sending half of these results succeded, where sending all did not. Custom test data (with the same class of course) did show the same results. If they got too big, it stopped working)
Without nginx, there are no errors while sending data from client to server. With nginx however, the client does recieve a HTTP 504 error.
Do you guy's have heard of this behaviour / know how to fix this ?
Please have a look at my sample project, wich should include everything you'd need.
Github Repository with sample projects https://github.com/xTeare/GrpcAndNGINX
Other Resources :
Stackoverflow Question https://stackoverflow.com/questions/68547210/c-sharp-nginx-upstream-timed-out
2nd Stackoverflow Question (with Java) https://stackoverflow.com/questions/68708438/grpc-communication-stucks-using-nginx
/r/nginx https://www.reddit.com/r/nginx/comments/otwhma/c_grpc_with_nginx_does_not_work/
/r/csharp https://old.reddit.com/r/csharp/comments/otwgta/grpc_with_nginx_does_not_work/
Thanks in advance
xTeare
