refactor(docker): use http.Method instead of strings

src/docker/containers.v

@@ -3,7 +3,7 @@ module docker
 import json
 import net.urllib
 import time
-import net.http
+import net.http { Method }
 
 struct DockerError {
 	message string
@@ -16,7 +16,7 @@ struct Container {
 
 // containers returns a list of all containers.
 pub fn (mut d DockerConn) containers() ?[]Container {
-	d.send_request('GET', urllib.parse('/v1.41/containers/json')?)?
+	d.send_request(Method.get, urllib.parse('/v1.41/containers/json')?)?
 	head, res := d.read_response()?
 
 	if head.status_code != 200 {
@@ -47,7 +47,7 @@ pub:
 
 // create_container creates a new container with the given config.
 pub fn (mut d DockerConn) create_container(c NewContainer) ?CreatedContainer {
-	d.send_request_with_json('POST', urllib.parse('/v1.41/containers/create')?, c)?
+	d.send_request_with_json(Method.post, urllib.parse('/v1.41/containers/create')?, c)?
 	head, res := d.read_response()?
 
 	if head.status_code != 201 {
@@ -63,7 +63,7 @@ pub fn (mut d DockerConn) create_container(c NewContainer) ?CreatedContainer {
 
 // start_container starts the container with the given id.
 pub fn (mut d DockerConn) start_container(id string) ? {
-	d.send_request('POST', urllib.parse('/v1.41/containers/$id/start')?)?
+	d.send_request(Method.post, urllib.parse('/v1.41/containers/$id/start')?)?
 	head, body := d.read_response()?
 
 	if head.status_code != 204 {
@@ -93,7 +93,7 @@ pub mut:
 
 // inspect_container returns detailed information for a given container.
 pub fn (mut d DockerConn) inspect_container(id string) ?ContainerInspect {
-	d.send_request('GET', urllib.parse('/v1.41/containers/$id/json')?)?
+	d.send_request(Method.get, urllib.parse('/v1.41/containers/$id/json')?)?
 	head, body := d.read_response()?
 
 	if head.status_code != 200 {
@@ -115,7 +115,7 @@ pub fn (mut d DockerConn) inspect_container(id string) ?ContainerInspect {
 
 // remove_container removes the container with the given id.
 pub fn (mut d DockerConn) remove_container(id string) ? {
-	d.send_request('DELETE', urllib.parse('/v1.41/containers/$id')?)?
+	d.send_request(Method.delete, urllib.parse('/v1.41/containers/$id')?)?
 	head, body := d.read_response()?
 
 	if head.status_code != 204 {
@@ -128,7 +128,7 @@ pub fn (mut d DockerConn) remove_container(id string) ? {
 // get_container_logs returns a reader object allowing access to the
 // container's logs.
 pub fn (mut d DockerConn) get_container_logs(id string) ?&StreamFormatReader {
-	d.send_request('GET', urllib.parse('/v1.41/containers/$id/logs?stdout=true&stderr=true')?)?
+	d.send_request(Method.get, urllib.parse('/v1.41/containers/$id/logs?stdout=true&stderr=true')?)?
 	head := d.read_response_head()?
 
 	if head.status_code != 200 {

src/docker/docker.v

@@ -39,7 +39,7 @@ pub fn (mut d DockerConn) close() ? {
 }
 
 // send_request sends an HTTP request without body.
-pub fn (mut d DockerConn) send_request(method string, url urllib.URL) ? {
+pub fn (mut d DockerConn) send_request(method http.Method, url urllib.URL) ? {
 	req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\n\n'
 
 	d.socket.write_string(req)?
@@ -49,7 +49,7 @@ pub fn (mut d DockerConn) send_request(method string, url urllib.URL) ? {
 }
 
 // send_request_with_body sends an HTTP request with the given body.
-pub fn (mut d DockerConn) send_request_with_body(method string, url urllib.URL, content_type string, body string) ? {
+pub fn (mut d DockerConn) send_request_with_body(method http.Method, url urllib.URL, content_type string, body string) ? {
 	req := '$method $url.request_uri() HTTP/1.1\nHost: localhost\nContent-Type: $content_type\nContent-Length: $body.len\n\n$body\n\n'
 
 	d.socket.write_string(req)?
@@ -60,7 +60,7 @@ pub fn (mut d DockerConn) send_request_with_body(method string, url urllib.URL,
 
 // send_request_with_json<T> is a convenience wrapper around
 // send_request_with_body that encodes the input as JSON.
-pub fn (mut d DockerConn) send_request_with_json<T>(method string, url urllib.URL, data &T) ? {
+pub fn (mut d DockerConn) send_request_with_json<T>(method http.Method, url urllib.URL, data &T) ? {
 	body := json.encode(data)
 
 	return d.send_request_with_body(method, url, 'application/json', body)

src/docker/images.v

@@ -1,6 +1,6 @@
 module docker
 
-import net.http
+import net.http { Method }
 import net.urllib
 import json
 
@@ -11,7 +11,7 @@ pub:
 
 // pull_image pulls the given image:tag.
 pub fn (mut d DockerConn) pull_image(image string, tag string) ? {
-	d.send_request('POST', urllib.parse('/v1.41/images/create?fromImage=$image&tag=$tag')?)?
+	d.send_request(Method.post, urllib.parse('/v1.41/images/create?fromImage=$image&tag=$tag')?)?
 	head := d.read_response_head()?
 
 	if head.status_code != 200 {
@@ -34,7 +34,7 @@ pub fn (mut d DockerConn) pull_image(image string, tag string) ? {
 
 // create_image_from_container creates a new image from a container.
 pub fn (mut d DockerConn) create_image_from_container(id string, repo string, tag string) ?Image {
-	d.send_request('POST', urllib.parse('/v1.41/commit?container=$id&repo=$repo&tag=$tag')?)?
+	d.send_request(Method.post, urllib.parse('/v1.41/commit?container=$id&repo=$repo&tag=$tag')?)?
 	head, body := d.read_response()?
 
 	if head.status_code != 201 {
@@ -50,7 +50,7 @@ pub fn (mut d DockerConn) create_image_from_container(id string, repo string, ta
 
 // remove_image removes the image with the given id.
 pub fn (mut d DockerConn) remove_image(id string) ? {
-	d.send_request('DELETE', urllib.parse('/v1.41/images/$id')?)?
+	d.send_request(Method.delete, urllib.parse('/v1.41/images/$id')?)?
 	head, body := d.read_response()?
 
 	if head.status_code != 200 {