feat(NODE-3469,NODE-3615,NODE-3507): update min and max wire versions

.evergreen/config.yml

@@ -852,138 +852,6 @@ tasks:
           VERSION: '3.6'
           TOPOLOGY: sharded_cluster
       - func: run tests
-  - name: test-3.4-server
-    tags:
-      - '3.4'
-      - server
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '3.4'
-          TOPOLOGY: server
-      - func: run tests
-  - name: test-3.4-replica_set
-    tags:
-      - '3.4'
-      - replica_set
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '3.4'
-          TOPOLOGY: replica_set
-      - func: run tests
-  - name: test-3.4-sharded_cluster
-    tags:
-      - '3.4'
-      - sharded_cluster
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '3.4'
-          TOPOLOGY: sharded_cluster
-      - func: run tests
-  - name: test-3.2-server
-    tags:
-      - '3.2'
-      - server
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '3.2'
-          TOPOLOGY: server
-      - func: run tests
-  - name: test-3.2-replica_set
-    tags:
-      - '3.2'
-      - replica_set
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '3.2'
-          TOPOLOGY: replica_set
-      - func: run tests
-  - name: test-3.2-sharded_cluster
-    tags:
-      - '3.2'
-      - sharded_cluster
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '3.2'
-          TOPOLOGY: sharded_cluster
-      - func: run tests
-  - name: test-3.0-server
-    tags:
-      - '3.0'
-      - server
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '3.0'
-          TOPOLOGY: server
-      - func: run tests
-  - name: test-3.0-replica_set
-    tags:
-      - '3.0'
-      - replica_set
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '3.0'
-          TOPOLOGY: replica_set
-      - func: run tests
-  - name: test-3.0-sharded_cluster
-    tags:
-      - '3.0'
-      - sharded_cluster
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '3.0'
-          TOPOLOGY: sharded_cluster
-      - func: run tests
-  - name: test-2.6-server
-    tags:
-      - '2.6'
-      - server
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '2.6'
-          TOPOLOGY: server
-      - func: run tests
-  - name: test-2.6-replica_set
-    tags:
-      - '2.6'
-      - replica_set
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '2.6'
-          TOPOLOGY: replica_set
-      - func: run tests
-  - name: test-2.6-sharded_cluster
-    tags:
-      - '2.6'
-      - sharded_cluster
-    commands:
-      - func: install dependencies
-      - func: bootstrap mongo-orchestration
-        vars:
-          VERSION: '2.6'
-          TOPOLOGY: sharded_cluster
-      - func: run tests
   - name: test-latest-server-v1-api
     tags:
       - latest
@@ -1810,18 +1678,6 @@ buildvariants:
       - test-3.6-server
       - test-3.6-replica_set
       - test-3.6-sharded_cluster
-      - test-3.4-server
-      - test-3.4-replica_set
-      - test-3.4-sharded_cluster
-      - test-3.2-server
-      - test-3.2-replica_set
-      - test-3.2-sharded_cluster
-      - test-3.0-server
-      - test-3.0-replica_set
-      - test-3.0-sharded_cluster
-      - test-2.6-server
-      - test-2.6-replica_set
-      - test-2.6-sharded_cluster
       - test-latest-server-v1-api
       - test-atlas-connectivity
       - test-atlas-data-lake
@@ -1891,18 +1747,6 @@ buildvariants:
       - test-3.6-server
       - test-3.6-replica_set
       - test-3.6-sharded_cluster
-      - test-3.4-server
-      - test-3.4-replica_set
-      - test-3.4-sharded_cluster
-      - test-3.2-server
-      - test-3.2-replica_set
-      - test-3.2-sharded_cluster
-      - test-3.0-server
-      - test-3.0-replica_set
-      - test-3.0-sharded_cluster
-      - test-2.6-server
-      - test-2.6-replica_set
-      - test-2.6-sharded_cluster
       - test-latest-server-v1-api
       - test-atlas-connectivity
       - test-atlas-data-lake
@@ -1973,18 +1817,6 @@ buildvariants:
       - test-3.6-server
       - test-3.6-replica_set
       - test-3.6-sharded_cluster
-      - test-3.4-server
-      - test-3.4-replica_set
-      - test-3.4-sharded_cluster
-      - test-3.2-server
-      - test-3.2-replica_set
-      - test-3.2-sharded_cluster
-      - test-3.0-server
-      - test-3.0-replica_set
-      - test-3.0-sharded_cluster
-      - test-2.6-server
-      - test-2.6-replica_set
-      - test-2.6-sharded_cluster
       - test-latest-server-v1-api
       - test-atlas-data-lake
       - test-ocsp-valid-cert-server-staples

.evergreen/generate_evergreen_tasks.js

@@ -3,7 +3,7 @@ const fs = require('fs');
 const yaml = require('js-yaml');
 
 const LATEST_EFFECTIVE_VERSION = '5.0';
-const MONGODB_VERSIONS = ['latest', '5.0', '4.4', '4.2', '4.0', '3.6', '3.4', '3.2', '3.0', '2.6'];
+const MONGODB_VERSIONS = ['latest', '5.0', '4.4', '4.2', '4.0', '3.6'];
 const NODE_VERSIONS = ['erbium', 'fermium'];
 NODE_VERSIONS.sort();
 const LOWEST_LTS = NODE_VERSIONS[0];
@@ -34,7 +34,7 @@ const OPERATING_SYSTEMS = [
     clientEncryption: false // TODO(NODE-3401): Unskip when Windows no longer fails to launch mongocryptd occasionally
   }
 ].map(osConfig => ({
-  mongoVersion: '>=2.6',
+  mongoVersion: '>=3.6',
   nodeVersion: LOWEST_LTS,
   auth: false, // TODO test auth?
   clientEncryption: true,
@@ -484,7 +484,7 @@ OPERATING_SYSTEMS.forEach(
     name: osName,
     display_name: osDisplayName,
     run_on,
-    mongoVersion = '>=2.6',
+    mongoVersion = '>=3.6',
     nodeVersions = NODE_VERSIONS,
     clientEncryption,
     msvsVersion

src/cmap/wire_protocol/constants.ts

@@ -1,7 +1,7 @@
-export const MIN_SUPPORTED_SERVER_VERSION = '2.6';
-export const MAX_SUPPORTED_SERVER_VERSION = '5.0';
-export const MIN_SUPPORTED_WIRE_VERSION = 2;
-export const MAX_SUPPORTED_WIRE_VERSION = 13;
+export const MIN_SUPPORTED_SERVER_VERSION = '3.6';
+export const MAX_SUPPORTED_SERVER_VERSION = '5.1';
+export const MIN_SUPPORTED_WIRE_VERSION = 6;
+export const MAX_SUPPORTED_WIRE_VERSION = 14;
 export const OP_REPLY = 1;
 export const OP_UPDATE = 2001;
 export const OP_INSERT = 2002;

src/operations/list_collections.ts

@@ -90,14 +90,17 @@ export class ListCollectionsOperation extends CommandOperation<string[]> {
       return;
     }
 
-    const command = {
+    return super.executeCommand(server, session, this.generateCommand(), callback);
+  }
+
+  /* This is here for the purpose of unit testing the final command that gets sent. */
+  generateCommand(): Document {
+    return {
       listCollections: 1,
       filter: this.filter,
       cursor: this.batchSize ? { batchSize: this.batchSize } : {},
       nameOnly: this.nameOnly
     };
-
-    return super.executeCommand(server, session, command, callback);
   }
 }
 

test/functional/buffering_proxy.test.js

@@ -35,7 +35,7 @@ describe.skip('Buffering Proxy', function () {
       var electionIds = [new ObjectId(0), new ObjectId(1)];
 
       // Default message fields
-      var defaultFields = Object.assign({}, mock.DEFAULT_ISMASTER, {
+      var defaultFields = Object.assign({}, mock.HELLO, {
         setName: 'rs',
         setVersion: 1,
         electionId: electionIds[0],
@@ -252,7 +252,7 @@ describe.skip('Buffering Proxy', function () {
       var electionIds = [new ObjectId(0), new ObjectId(1)];
 
       // Default message fields
-      var defaultFields = Object.assign({}, mock.DEFAULT_ISMASTER, {
+      var defaultFields = Object.assign({}, mock.HELLO, {
         setName: 'rs',
         setVersion: 1,
         electionId: electionIds[0],

test/functional/change_stream.test.js

@@ -2082,7 +2082,7 @@ describe('Change Streams', function () {
 
       ismaster() {
         const uri = this.server.uri();
-        return Object.assign({}, mock.DEFAULT_ISMASTER_36, {
+        return Object.assign({}, mock.HELLO, {
           ismaster: true,
           secondary: false,
           me: uri,
@@ -2828,7 +2828,7 @@ context('NODE-2626 - handle null changes without error', function () {
     mockServer.setMessageHandler(req => {
       const doc = req.document;
       if (doc.ismaster || doc.hello) {
-        return req.reply(mock.DEFAULT_ISMASTER_36);
+        return req.reply(mock.HELLO);
       }
       if (doc.aggregate) {
         return req.reply({