Let's take a look at the third topic of WCF to verify the identity of a user, and the third topic of wcf.

Let's take a look at the third topic of WCF to verify the identity of a user, and the third topic of wcf.

Today, I mainly write a message about the use of header messages to verify user information.

I will draw a picture below to see the picture first

Step 1: Start the user request code first.

First, create an executable context object block and define the internal transmission channel.

Using (OperationContextScope scope = new OperationContextScope (userClient. InnerChannel ))

Then: Create the SOAP transmission content for the header message to be sent

MessageHeader myHeaderUid = MessageHeader. CreateHeader (
"Header", "uid", UId );

Header: The local name of the header XML Element (the name can be obtained arbitrarily, but must be consistent with that on the server side)

Uid: The namespace URI of the header XML Element (the name can be obtained arbitrarily, but must be consistent with that on the server side)

UId: The information to be transmitted (an object-type value)

Finally, add the header content to the object to be transmitted.

OperationContext. Current. OutgoingMessageHeaders. Add (myHeaderUid );

OK to complete the client encoding.

1 ValidUserClient userClient = new ValidUserClient (); 2 while (true) 3 {4 Console. write ("username:"); 5 string UId = Console. readLine (); 6 Console. write ("Password:"); 7 string Pwd = Console. readLine (); 8 using (OperationContextScope scope = new OperationContextScope (userClient. innerChannel) // create an executable context object block and define the internal Transmission Channel 9 {10 MessageHeader myHeaderUid = MessageHeader. createHeader (11 "header", "uid", UId); 12 MessageHeader myHeaderPwd = MessageHeader. createHeader (13 "header", "pwd", Pwd); 14 OperationContext. current. outgoingMessageHeaders. add (myHeaderUid); 15 OperationContext. current. outgoingMessageHeaders. add (myHeaderPwd); 16 Console. writeLine (userClient. user (); 17} 18}Client code

Step 2: server code

First, start retrieving the header message.

Int uIdIndex = OperationContext. current. incomingMessageHeaders. findHeader ("header", "uid"); (be sure to keep consistent with the client, what we get is the index, that is, the header information location (if index =-1, there is no header message ))

Then, retrieve the header message content Uid = OperationContext through the index. current. incomingMessageHeaders. getHeader <string> (uIdIndex); finally, we perform logical judgment 1 Dictionary <string, string> AllUsers = new Dictionary <string, string> (10 ); 2 public bool User () 3 {4 InsertUser (); // dynamically Add User 5 string Uid = string in a simulated database. empty; 6 string Pwd = string. empty; 7 bool result = false; 8 int uIdIndex = OperationContext. current. incomingMessageHeaders. findHeader ("head Er "," uid "); 9 int pwdIndex = OperationContext. Current. IncomingMessageHeaders. FindHeader (" header "," pwd "); 10 if (uIdIndex! =-1) 11 {12 Uid = OperationContext. Current. IncomingMessageHeaders. GetHeader <string> (uIdIndex); 13} 14 if (pwdIndex! =-1) 15 {16 Pwd = OperationContext. current. incomingMessageHeaders. getHeader <string> (pwdIndex); 17} 18 if (AllUsers. containsKey (Uid) 19 {20 if (AllUsers [Uid] = Pwd) 21 {22 result = true; 23} 24 25} 26 return result; 27} 28 29 private void InsertUser () 30 {31 AllUsers. add ("admin"," 123456 "); 32 AllUsers. add ("sa", "123456"); 33 AllUsers. add ("ldc", "123456"); 34 AllUsers. add ("zd", "123456"); 35}Server code

In this way, we can simply verify the user with the header message. I have written a lot of bad things that you can come up with and learn together. The next article describes handwritten message protocols and data protocols.

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