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gRPC Go Master Class: Build Modern API & Micro services

Home Page: https://www.udemy.com/course/grpc-golang/?referralCode=EAD42E9AB1C45A5849C5

Go 88.76% Shell 2.88% Makefile 5.51% PowerShell 2.85%

grpc grpc-go udemy

grpc-go-course's Introduction

gRPC Go

COUPON: `START_AUG`

Notes

`Windows`

I recommend you use powershell (try to update: see) for following this course, you might have unexepected behavior if you use Git bash or other (especially with OpenSSL)
I recommend you use Chocolatey as package installer (see Install)

Build

`Linux/MacOS`

make all

*all is a Makefile rule - check the other rules

`Windows - Chocolatey`

choco install make
make all

*all is a Makefile rule - check the other rules

`Windows - Without Chocolatey`

protoc -Igreet/proto --go_opt=module=github.com/Clement-Jean/grpc-go-course --go_out=. --go-grpc_opt=module=github.com/Clement-Jean/grpc-go-course --go-grpc_out=. greet/proto/*.proto

protoc -Icalculator/proto --go_opt=module=github.com/Clement-Jean/grpc-go-course --go_out=. --go-grpc_opt=module=github.com/Clement-Jean/grpc-go-course --go-grpc_out=. calculator/proto/*.proto

protoc -Iblog/proto --go_opt=module=github.com/Clement-Jean/grpc-go-course --go_out=. --go-grpc_opt=module=github.com/Clement-Jean/grpc-go-course --go-grpc_out=. blog/proto/*.proto

go build -o bin/greet/server.exe ./greet/server
go build -o bin/greet/client.exe ./greet/client

go build -o bin/calculator/server.exe ./calculator/server
go build -o bin/calculator/client.exe ./calculator/client

go build -o bin/blog/server.exe ./blog/server
go build -o bin/blog/client.exe ./blog/client

Makefile

For more information about what are the rules defined in the Makefile, please type:

make help

Reporting a bug

As I need to know a little bit more information about your environment to help you, when filling an issue, please provide the output of:

make about

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grpc-go-course's Issues

transport: Error while dialing dial tcp myserverIP:50051: i/o timeout

I have developed a unary grpc service that gets the ipaddress and number from client and returns the square of that number. If I host the service in localhost the client is able to access those service and prints the output (square of the input number)

Now I hosted the server side binary in a real separate server(linux) and trying to access that service via my local client(windows).

But when I try to access the service from client it waits for sometime and throws "transport: Error while dialing dial tcp myserverIP:50051: i/o timeout" error

I am able to ping the server from client and it is working fine!

precise steps are

step1: (client side)
#Windows local machine
#updated the ssl.sh script, cn to myserverIP(ip address of my linux server) and generated the crt and pem files

step2: (server side) server.crt & server.pem files are copied from client side
#linux OS with specific myserverIP

>./server myserverIP:50051
2023/07/11 15:26:38 Listening at myserverIP:50051

step3: (client side-windows) ca.crt file is already generated

>client.exe myserverIP:50051 5  # adapted to get ip address from user as a 1st parameter and number to be squared as 2nd param
2023/07/11 13:58:23 Could not square the number: rpc error: code = Unavailable desc = connection error: desc = "transport: Error while dialing dial tcp myserverIP:50051: i/o timeout"

Please may I have your help in resolving the connection issue?

How to use unit test in blog?

Hi Clement-Jean:

I finished gRPC-GO from the udemy course, but I noticed that you have written tests, will you add the same course?
Or README.md can be updated
I also noticed that some French and French courses are different

like this struct
type server struct { // The original course is to write service pb.BlogServiceServer }

ssl.sh script error

Hi Clemen, I am following your tutorial on gRPC [Golang] Master Class: Build Modern API & Microservices.
How ever during enabling ssl security, when I try to run bash ssl.sh I get below error in my wsl ubuntu running 22.04.

$ make about
OS: linux 5.15.90.1-microsoft-standard-WSL2 x86_64
Shell: bash 5.1.16(1)-release
Protoc version: libprotoc 3.12.4
Go version: go version go1.20.5 linux/amd64
Go package: github.com/dineshr93/services
Openssl version: OpenSSL 3.0.2 15 Mar 2022 (Library: OpenSSL 3.0.2 15 Mar 2022)

" as a number parse "4096
Could not open file or uri for loading private key from ca.key
802BCA06CB7F0000:error:16000069:STORE routines:ossl_store_get0_loader_int:unregistered scheme:../crypto/store/store_register.c:237:scheme=file
802BCA06CB7F0000:error:80000002:system library:file_open:No such file or directory:../providers/implementations/storemgmt/file_store.c:267:calling stat(ca.key)
" as a number parse "4096
Could not open file or uri for loading private key from server.key
80BBE0E0437F0000:error:16000069:STORE routines:ossl_store_get0_loader_int:unregistered scheme:../crypto/store/store_register.c:237:scheme=file
80BBE0E0437F0000:error:80000002:system library:file_open:No such file or directory:../providers/implementations/storemgmt/file_store.c:267:calling stat(server.key)
Can't open "server.csr" for reading, No such file or directory
803BE2069A7F0000:error:80000002:system library:BIO_new_file:No such file or directory:../crypto/bio/bss_file.c:67:calling fopen(server.csr, r)
803BE2069A7F0000:error:10000080:BIO routines:BIO_new_file:no such file:../crypto/bio/bss_file.c:75:
Unable to load certificate request input
Can't open "server.key" for reading, No such file or directory
808B048E137F0000:error:80000002:system library:BIO_new_file:No such file or directory:../crypto/bio/bss_file.c:67:calling fopen(server.key, r)
808B048E137F0000:error:10000080:BIO routines:BIO_new_file:no such file:../crypto/bio/bss_file.c:75:

Please may I have your help?

clement-jean / grpc-go-course Goto Github PK

grpc-go-course's Introduction

gRPC Go

COUPON: START_AUG

Notes

Windows