HTTP Cheat Sheet

#! /bin/bash
for method in GET POST PUT TRACE CONNECT OPTIONS;
do
  printf "$method / HTTP/1.1\r\nHost:domain\r\n\r\n" | nc domain 80
done

HTTP/1.1 200 OK

Content-Type: text/html;

charset=UTF-8

Server: Apache/2.4.7 (Ubuntu)

Date: Tue, 24 Oct 2017 15:51:10 GMT

Content-length: 6243

GET /search HTTP/1.1

Accept: /

Accept-Language: en-us

User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko

Host: www.google.com

Proxy-Connection: Keep-Alive

Cookies SESSIONID=c953ef6978d4525b35620e9f70234aa9; ANSWER=42;

Content-length: 0

 private requestUrl: string = 'http://localhost:4000/posts';

  getData(id : number) : Observable<Post> {
    return this.http.get(
${this.requestUrl}/${id}
)
      .map(this.mapResponse)
      .catch(this.handleError)
  }

  getData(id : number) : Observable<Post> {
    return this.http.get(
${this.requestUrl}/${id}
)
      .map(this.mapResponse)
      .catch(this.handleError)
  }

  handleError(error: any): Observable<any> {
    console.error('An error occurred', error);
    return Observable.throw(error.json() || 'Server error');
  }

getData(id : number) : Observable<Post> {
    return this.http.get(
${this.requestUrl}/${id}
)
      .map(this.mapResponse)
      .catch(this.handleError)
  }


  mapResponse(response : Response) : Post {
    return response.json();
  }

import { Injectable } from '@angular/core';
import {Http, Response, Headers, RequestOptions} from "@angular/http";
import 'rxjs/Rx';
import {Observable} from "rxjs";
import {Post} from "./http/post.class";


@Injectable()
export class HttpService {

  constructor(private http: Http) { }

  private requestUrl: string = 'http://localhost:4000/posts';

  //Do all methods and observable options

  getData(id : number) : Observable<Post> {
    return this.http.get(
${this.requestUrl}/${id}
)
      .map(this.mapResponse)
      .catch(this.handleError)
  }

  handleError(error: any): Observable<any> {
    console.error('An error occurred', error);
    return Observable.throw(error.json() || 'Server error');
  }

  mapResponse(response : Response) : Post {
    return response.json();
  }

  addData(body : Post) : Observable<Post> {
    let bodyString = JSON.stringify(body);
    let header = new Headers({
      'Content-Type' : 'application/json'
    });
    let options = new RequestOptions({
      headers : header
    });

    return this.http.post(
${this.requestUrl}
, bodyString, options)
      .map(this.mapResponse)
      .catch(this.handleError);
  }

  updateData(body : Post) : Observable<Post> {
    let bodyString = JSON.stringify(body);
    let header = new Headers({
      'Content-Type' : 'application/json'
    });
    let options = new RequestOptions({
      headers : header
    });

    return this.http.put(
${this.requestUrl}/${body.id}
, bodyString, options)
      .map(this.mapResponse)
      .catch(this.handleError);
  }

  deleteData(body : Post) : Observable<Post> {
    return this.http.delete(
${this.requestUrl}/${body.id}
)
      .map(this.mapResponse)
      .catch(this.handleError);
  }

}

class Headers {
  staticfromResponseHeaderString(headersString: string) : Headers
  constructor(headers?: Headers|{[name: string]: any})
  append(name: string, value: string) : void
  delete(name: string) : void
  forEach(fn: (values: string[], name: string, headers: Map<string, string[]>) => void) : void
  get(name: string) : string
  has(name: string) : boolean
  keys() : string[]
  set(name: string, value: string|string[]) : void
  values() : string[][]
  toJSON() : {[name: string]: any}
  getAll(name: string) : string[]
  entries()
}

interface RequestOptionsArgs {
  url : string
  method : string|RequestMethod
  search : string|URLSearchParams
  headers : Headers
  body : any
  withCredentials : boolean
  responseType : ResponseContentType
}

constructor(private http: Http) {}

@NgModule({
     declarations: [],
     imports: [HttpModule],
     bootstrap: [],
     providers: []
})