Web Server on GoLang

Description: Web Server on GoLang -- Echo / Static Text / Random Text

Build gowebsvr Server

$ go mod tidy
$ go build

Running gowebsvr

$ ./gowebsvr 
gowebsvr is running on 80 port.

Running on different Port; use -p port

$ ./gowebsvr -p 8000
2019/06/23 23:25:28 Listening on port 8000...

if port number not provided; default port 80 will be used

Serving custome message; use -m "msg"

$ ./gowebsvr -p 8000 -m " Welcome to GoWebSvr ( _/\_ ) "

custome message will be served on '/greet' endpoint

In this case;

$ curl http://localhost:8000/greet
 Welcome to GoWebSvr ( _/\_ ) 

If no -m provided; default message will be "Message"

$ curl http://localhost:8000/greet
Message   

Echo Server : endpoint /echo

$ ./gowebsvr -p 8000 

In this case;

$ curl http://localhost:8000/echo

{"Method":"GET","URL":{"Scheme":"","Opaque":"","User":null,"Host":"","Path":"/echo","RawPath":"","ForceQuery":false,"RawQuery":"","Fragment":""},"Proto":"HTTP/1.1","ProtoMajor":1,"ProtoMinor":1,"Header":{"Accept":["*/*"],"User-Agent":["curl/7.54.0"]},"Body":{"String":""},"ContentLength":0,"TransferEncoding":null,"Host":"localhost:8000","Trailer":null,"RemoteAddr":"[::1]:53638","RequestURI":"/echo"} 

If no -m provided; default message is be "Message"

$ curl http://localhost:8000/greet
Message  

Random String/Text Generation : endpoint /randomtest /random1k /random1m

Various endpoints have been added to generate random string.

/randomtest -  It will generate 256KB of random string each time called
/random1k   -  It will generate 1KB of random string each time called
/random1m   -  It will generate 1MB of random string each time called

Random String/Text Generation with user specific size : endpoint /random

If you like to generate a specific size(in bytes) then pass that as a query size param on /random endpoint.

For Example: to generate 100 bytes of random text, we fire as:

$ curl http://localhost:8000/random?size=100

BpLnfgDsc2WD8F2qNfHK5a84jjJkwzDkh9h2fhfUVuS9jZ8uVbhV3vC5AWX39IVUWSP2NcHciWvqZTa2N95RxRTZHWUsaD6HEdz0

Docker

How about Docker; Yes... just fire the below and you are all set.

$ docker run -p 80:80 pksingh/gowebsvr

Now you can build the docker image too.

Note: Docker cli mustbe available on Host building/Running Docker container.

If you want to build this docker image; then make sure working directory is set to current path.

Building Docker Image

$ docker build -t gowebsvr .

Once the image build successful; you can verify using below.

$ docker images | grep "gowebsvr"

Running Docker container with different host port

$ docker run -p 8000:80 gowebsvr