WEBVTT 00:00.260 --> 00:04.430 Hey, everyone, and welcome back to the Knowledge Pole Video series. 00:04.430 --> 00:12.530 So in today's lecture, we'll have a high level overview in various kind of request methods which are 00:12.530 --> 00:14.900 available for the Http protocol. 00:14.900 --> 00:22.700 Now, we have already discussed some of the request methods like get, post, trace, head, etcetera, 00:22.700 --> 00:25.670 so this will just be a overview lecture. 00:26.210 --> 00:33.590 Now we already discussed that whenever a communication needs to be happening between a client and a 00:33.590 --> 00:42.110 server in a very simple, plain English language, a client can request for a file called as documentary 00:42.350 --> 00:42.930 mp4 you. 00:43.130 --> 00:49.910 I want to watch documentary dot mp4 and the server will send the file. 00:49.910 --> 00:53.150 So this is a plain English based communication. 00:53.150 --> 01:02.990 When you change the language from English to the Http, then the client will send a get request, which 01:02.990 --> 01:07.790 basically means give me this file on documentary dot mp4. 01:07.790 --> 01:16.250 So it also specifies the file name and the server responds back with 200. 01:16.250 --> 01:16.730 Okay. 01:17.030 --> 01:25.820 Now, depending upon the nature of the request, this specific part is called as the request method 01:25.820 --> 01:28.040 or http request method. 01:28.040 --> 01:30.500 So this specific part will change. 01:30.500 --> 01:37.280 Like for example, if you are using a login form where you have to put a username and password, then 01:37.280 --> 01:39.260 you cannot really use get. 01:39.440 --> 01:49.040 Ideally, you should be using post or let's say for example, you just wants to you want to write some 01:49.040 --> 01:51.620 file to the server, then you need to use a put. 01:51.650 --> 01:56.840 If you want to delete, then there is a Http request method called as delete. 01:56.840 --> 02:03.270 So depending upon the kind of operations that you might want to perform, there are various request 02:03.270 --> 02:06.780 methods which are available in the Http protocol. 02:07.440 --> 02:15.090 So as a high level overview, these are some of the request methods that we will be using and these 02:15.090 --> 02:18.300 are some things which are used most commonly. 02:18.300 --> 02:21.360 Now get is something that we are already aware about. 02:21.360 --> 02:25.800 It is used to retrieve data from a server post. 02:26.040 --> 02:28.710 It is used to send input data to the server. 02:28.710 --> 02:36.750 So whenever there is a input form which we are presented with like a user username password or a search 02:36.750 --> 02:37.380 query. 02:37.380 --> 02:49.230 So those can use post head is exactly like get, but it only is used to find the headers of the response 02:49.230 --> 02:57.750 and the server does not send the actual response, but is also an interesting method which is used to 02:57.750 --> 03:01.550 write a document to the server. 03:01.550 --> 03:07.970 Delete as the name suggests, it basically deletes resources from the server options. 03:07.970 --> 03:14.810 Basically asks the server on which are the request methods which are supported from the server. 03:14.840 --> 03:23.600 Now we have already discussed that a web server can have a control on what type of Http request methods 03:23.600 --> 03:24.770 are allowed. 03:24.950 --> 03:30.230 Now, generally web server will not allow this specific method like delete for example. 03:30.230 --> 03:32.480 So delete method itself is not allowed. 03:32.480 --> 03:40.310 So depending upon the web server and the web server configuration, a system administrator can choose 03:40.310 --> 03:44.840 to allow or can choose to deny a request method. 03:44.840 --> 03:46.940 So this is very important to remember. 03:46.970 --> 03:49.280 Last but not least, trace. 03:49.670 --> 03:56.360 It basically echoes the received request from the web server we have discussed already discussed most 03:56.360 --> 03:57.110 of them. 03:57.110 --> 04:05.640 There are other Http request methods also present, like for example, connect and will not be able 04:05.640 --> 04:12.330 to discuss about all of them, but will surely be able to discuss about most of them, which are more 04:12.330 --> 04:14.610 important in day to day communication. 04:14.610 --> 04:15.960 So this is it. 04:15.960 --> 04:18.660 About the Http request method. 04:18.690 --> 04:24.330 One thing important to remember, just remember this term calls request method. 04:24.330 --> 04:32.580 So if tomorrow someone asks what is get, you should be able to say that the get is the request method. 04:33.150 --> 04:36.000 So this is it about this lecture. 04:36.030 --> 04:40.800 Go ahead and complete the lesson and I hope this has been informative for you. 04:40.800 --> 04:45.450 If you have any doubts, suggestions, questions, feel free to connect us at Twitter, Facebook or 04:45.450 --> 04:48.660 LinkedIn or email us at instructors at KP Labs. 04:49.200 --> 04:50.520 Thanks for watching.