Hi Ankit, I span up a Ubuntu 16.04 machine to investigate this issue. I used the default Python2.7, and installed `pip` through `get-pip.py`. And I Installed `grpcio` through `pip`.
Here are the version infos of my machine: $ uname -a Linux lidiz-dev-ubuntu-16-04 4.15.0-1023-gcp #24~16.04.1-Ubuntu SMP Wed Oct 10 20:39:59 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux $ pip show grpcio Name: grpcio Version: 1.16.0 Summary: HTTP/2-based RPC framework Home-page: https://grpc.io Author: The gRPC Authors Author-email: grpc-io@googlegroups.com License: Apache License 2.0 Location: /home/lidiz/.local/lib/python2.7/site-packages Requires: six, enum34, futures Required-by: grpcio-tools The command I run to get example to work: # Installation $ curl https://bootstrap.pypa.io/get-pip.py | sudo python $ python -m pip install grpcio grpcio-tools googleapis-common-protos --user # Install gRPC and dependencies for the example # First Terminal lidiz@lidiz-dev-ubuntu-16-04:~/src/grpc/examples/python/helloworld$ python greeter_server.py # Second Terminal lidiz@lidiz-dev-ubuntu-16-04:~/src/grpc/examples/python/helloworld$ python greeter_client.py Greeter client received: Hello, you! It works on my machine, I guess there is a difference in the settings. I will continue to investigate this. Lidi Zheng On Friday, November 9, 2018 at 10:00:33 AM UTC-8, ankitpa...@gmail.com wrote: > > Hi Lidi > > $ python -m SimpleHTTPServer 8000 > $ curl http://localhost:8000 *Works.* > > > $ nc -6 -l 1234 # in one terminal > $ echo 'Hello' | nc localhost 1234 # in another terminal > # The 'Hello' should appear in the first terminal *Works.* > > > # Check your gRPC Python version > $ pip show grpcio > > --- > Metadata-Version: 2.1 > Name: grpcio > Version: 1.16.0 > Summary: HTTP/2-based RPC framework > Home-page: https://grpc.io > Author: The gRPC Authors > Author-email: grp...@googlegroups.com <javascript:> > Installer: pip > License: Apache License 2.0 > Location: /usr/local/lib/python2.7/dist-packages > Requires: six, enum34, futures > Classifiers: > Development Status :: 5 - Production/Stable > Programming Language :: Python > Programming Language :: Python :: 2 > Programming Language :: Python :: 2.7 > Programming Language :: Python :: 3 > Programming Language :: Python :: 3.4 > Programming Language :: Python :: 3.5 > Programming Language :: Python :: 3.6 > License :: OSI Approved :: Apache Software License > > i am still not able to make it work :( > > thanks > Ankit > > > On Thursday, November 8, 2018 at 2:50:56 PM UTC-8, li...@google.com wrote: >> >> Hi Ankit, >> >> Sorry to hear that none of the fixes work for you. If the server is >> started and able to bind tcp port, there is a great chance that this might >> due to some local network setting. >> >> To detect whether there is a local network issue or gRPC Python issue, >> can you try to start other applications that bind a port and try to >> communicate with it? >> >> For example, you can try: >> >> $ python -m SimpleHTTPServer 8000 >> $ curl http://localhost:8000 >> # Or visit this address in browser, it should show up a valid HTML web >> page >> >> or >> >> $ nc -6 -l 1234 # in one terminal >> $ echo 'Hello' | nc localhost 1234 # in another terminal >> # The 'Hello' should appear in the first terminal >> >> If one of those work, then there might be some issue with gRPC Python. If >> so, can you provide your gRPC Python version as well? >> # Check your gRPC Python version >> $ pip show grpcio >> >> Bests, >> Lidi >> >> >> On Thursday, November 8, 2018 at 9:18:32 AM UTC-8, ankitpa...@gmail.com >> wrote: >>> >>> Hi Lidi >>> >>> greeterserver.py is running on a terminal from other terminal i can see >>> that port 50051 is bound to python >>> # lsof -i :50051 >>> COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME >>> python 18126 root 6u IPv6 32226 0t0 TCP *:50051 (LISTEN) >>> root@fmx215:~/gRPC/grpc/examples/python/helloworld# >>> >>> I am behind corporate proxy; but i think they are working fine since I >>> am able to reach ernal internet as well as reach to nodes on internal >>> network >>> i am not sure if corporate proxy would alter or redirect any traffic >>> here. >>> >>> >>> following is my /etc/hosts file >>> 127.0.0.1 localhost >>> 127.0.1.1 fmx215.xx.xxx.com fmx215 >>> >>> # The following lines are desirable for IPv6 capable hosts >>> ::1 localhost ip6-localhost ip6-loopback >>> ff02::1 ip6-allnodes >>> ff02::2 ip6-allrouters >>> >>> I am still unable to get this example working. please let me know what >>> else i can check or do to make it working >>> >>> thanks >>> Ankit >>> On Wednesday, November 7, 2018 at 4:40:59 PM UTC-8, li...@google.com >>> wrote: >>>> >>>> Hi Ankit, >>>> >>>> After the greeter_server.py started, have you observed the port 50051 >>>> been bound in your system? Also, have you use any sort of VPN or local >>>> proxy that may redirect the traffic? One more check, is there a loopback >>>> entry for 'localhost' in your /etc/hosts? >>>> >>>> Lidi >>>> >>>> On Wednesday, November 7, 2018 at 4:26:48 PM UTC-8, >>>> ankitpa...@gmail.com wrote: >>>>> >>>>> I have ubuntu server system >>>>> >>>>> #lsb_release -a >>>>> Distributor ID: Ubuntu >>>>> Description: Ubuntu 16.04.5 LTS >>>>> Release: 16.04 >>>>> Codename: xenial >>>>> >>>>> #uname -a >>>>> Linux fmx215 4.10.0-42-generic #46~16.04.1-Ubuntu SMP Mon Dec 4 >>>>> 15:57:59 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux >>>>> >>>>> I am trying to run python quick start example step by step as >>>>> explained on https://grpc.io/docs/quickstart/python.html >>>>> <https://grpc.io/docs/quickstart/python.html> >>>>> >>>>> greeter_server.py runs without any error and wait for >>>>> greeter_client.py >>>>> >>>>> while running greeter_client.py it fails. >>>>> >>>>> # python greeter_client.py >>>>> Traceback (most recent call last): >>>>> File "greeter_client.py", line 35, in <module> >>>>> run() >>>>> File "greeter_client.py", line 30, in run >>>>> response = stub.SayHello(helloworld_pb2.HelloRequest(name='you')) >>>>> File "/usr/local/lib/python2.7/dist-packages/grpc/_channel.py", line >>>>> 533, in __call__ >>>>> return _end_unary_response_blocking(state, call, False, None) >>>>> File "/usr/local/lib/python2.7/dist-packages/grpc/_channel.py", line >>>>> 467, in _end_unary_response_blocking >>>>> raise _Rendezvous(state, None, None, deadline) >>>>> grpc._channel._Rendezvous: <_Rendezvous of RPC that terminated with: >>>>> status = StatusCode.UNAVAILABLE >>>>> details = "Socket closed" >>>>> debug_error_string = >>>>> "{"created":"@1541634693.250829735","description":"Error received from >>>>> peer","file":"src/core/lib/surface/call.cc","file_line":1017,"grpc_message":"Socket >>>>> >>>>> closed","grpc_status":14}" >>>>> >>>>> >>>>> https://stackoverflow.com/questions/53129263/run-grpc-python-example-must-use-sudo-command >>>>> >>>>> <https://stackoverflow.com/questions/53129263/run-grpc-python-example-must-use-sudo-command>seem >>>>> >>>>> to be same issue but adding "sudo" doesn't help me. I am already running >>>>> this exercise as root >>>>> >>>>> I have checked system using "netstat" and "lsof" and port 50051 is not >>>>> used by any process. >>>>> >>>>> can you help me in running this quick start example without any errors. >>>>> >>>>> thank you >>>>> Ankit >>>>> >>>> -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to grpc-io+unsubscr...@googlegroups.com. To post to this group, send email to grpc-io@googlegroups.com. Visit this group at https://groups.google.com/group/grpc-io. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/eefa4cd8-ec46-41e8-b10e-83552b999bf7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
