diff --git a/src/Center/Center.ts b/src/Center/Center.ts
index e9187b5..b36bca3 100644
--- a/src/Center/Center.ts
+++ b/src/Center/Center.ts
@@ -69,6 +69,21 @@ export default class Center extends SmppSession {
 		super.defaultMultipleJob = job;
 	}
 
+	sendPdu(pdu: PDU, force?: boolean): Promise<object> {
+		return new Promise((resolve, reject) => {
+			if (!force) {
+				this.validateSessions(reject);
+			}
+			this.logger.log5(`Center-${this.id} sending PDU: ${JSON.stringify(pdu)}`);
+			let pduCopy = new smpp.PDU(pdu.command, {...pdu});
+			let session = this.getNextSession();
+			this.processors.Preprocessor.forEach((processor: PduProcessor) => processor.processPdu(session, pduCopy));
+			session.send(pduCopy, (replyPdu: any) => {
+				resolve(replyPdu);
+			});
+		});
+	}
+
 	sendMultiple(job: Job): Promise<void> {
 		return new Promise((resolve, reject) => {
 			this.validateSessions(reject);
@@ -102,18 +117,6 @@ export default class Center extends SmppSession {
 		});
 	}
 
-	sendPdu(pdu: object, force?: boolean): Promise<object> {
-		return new Promise((resolve, reject) => {
-			if (!force) {
-				this.validateSessions(reject);
-			}
-			this.logger.log5(`Center-${this.id} sending PDU: ${JSON.stringify(pdu)}`);
-			this.getNextSession().send(pdu, (replyPdu: any) => {
-				resolve(replyPdu);
-			});
-		});
-	}
-
 	initialize(): void {
 		this.server = smpp.createServer({}, this.eventSessionConnected.bind(this));
 		this.server.listen(this.port);
@@ -140,8 +143,10 @@ export default class Center extends SmppSession {
 			status: this._status,
 			defaultSingleJob: this._defaultSingleJob.serialize(),
 			defaultMultipleJob: this._defaultMultipleJob.serialize(),
-			processors: this.pduProcessors.map(p => p.serialize()),
-			availableProcessors: ProcessorManager.getProcessorsForType(this.constructor.name)
+			preprocessors: this.processors.Preprocessor.map((p: PduProcessor) => p.serialize()),
+			postprocessors: this.processors.Postprocessor.map((p: PduProcessor) => p.serialize()),
+			availablePreprocessors: ProcessorManager.getPreprocessorsForType(this.constructor.name).map((p: PduProcessor) => p.serialize()),
+			availablePostprocessors: ProcessorManager.getPostprocessorsForType(this.constructor.name).map((p: PduProcessor) => p.serialize()),
 		};
 	}
 
@@ -160,6 +165,7 @@ export default class Center extends SmppSession {
 		return session;
 	}
 
+	// TODO: Move this to smppSession and call postProcessors
 	private eventBindTransceiver(session: any, pdu: PDU) {
 		this.logger.log1(`Center-${this.id} got a bind_transciever with system_id ${pdu.system_id} and password ${pdu.password}`);
 		session.pause();
@@ -218,7 +224,7 @@ export default class Center extends SmppSession {
 		}
 	}
 
-	// No reaason for this to be a promise
+	// TODO: Move this to smppSession and call postProcessors
 	eventAnyPdu(session: any, pdu: any): Promise<any> {
 		this.eventEmitter.emit(this.EVENT.ANY_PDU, pdu);
 		let successful: number = 0;
diff --git a/src/Client/Client.ts b/src/Client/Client.ts
index 861f7d3..76c2b4b 100644
--- a/src/Client/Client.ts
+++ b/src/Client/Client.ts
@@ -112,6 +112,7 @@ export default class Client extends SmppSession {
 	}
 
 	serialize(): object {
+		// TODO: Generify this further by moving it to smpp session and creating a... "postSerialize" that is abstract
 		return {
 			id: this._id,
 			url: this.url,
@@ -120,8 +121,10 @@ export default class Client extends SmppSession {
 			status: this._status,
 			defaultSingleJob: this._defaultSingleJob.serialize(),
 			defaultMultipleJob: this._defaultMultipleJob.serialize(),
-			processors: this.pduProcessors.map(p => p.serialize()),
-			availableProcessors: ProcessorManager.getProcessorsForType(this.constructor.name)
+			preprocessors: this.processors.Preprocessor.map((p: PduProcessor) => p.serialize()),
+			postprocessors: this.processors.Postprocessor.map((p: PduProcessor) => p.serialize()),
+			availablePreprocessors: ProcessorManager.getPreprocessorsForType(this.constructor.name).map((p: PduProcessor) => p.serialize()),
+			availablePostprocessors: ProcessorManager.getPostprocessorsForType(this.constructor.name).map((p: PduProcessor) => p.serialize()),
 		};
 	}
 
@@ -130,14 +133,15 @@ export default class Client extends SmppSession {
 		return Promise.resolve(this.session.close());
 	}
 
-	sendPdu(pdu: any, force?: boolean): Promise<object> {
+	sendPdu(pdu: PDU, force?: boolean): Promise<object> {
 		return new Promise((resolve, reject) => {
 			if (!force) {
 				this.validateSession(reject);
 				this.validateBound(reject);
 			}
-			let pduCopy = new smpp.PDU(pdu.command, {...pdu})
-			this.pduProcessors.forEach((processor: PduProcessor) => processor.processPdu(this.session, pduCopy));
+			// Is this expensive...?
+			let pduCopy = new smpp.PDU(pdu.command, {...pdu});
+			this.processors.Preprocessor.forEach((processor: PduProcessor) => processor.processPdu(this.session, pduCopy));
 			this.logger.log5(`Client-${this.id} sending PDU: ${JSON.stringify(pduCopy)}`);
 			this.session.send(pduCopy, (replyPdu: object) => resolve(replyPdu));
 		});
@@ -171,7 +175,7 @@ export default class Client extends SmppSession {
 				if (count > 0 && counter >= count) {
 					this.cancelSendInterval();
 				} else {
-						this.sendPdu(job.pdu, true)
+					this.sendPdu(job.pdu, true)
 						.catch(e => this.logger.log1(`Error sending message: ${e}`));
 					counter++;
 				}
@@ -180,6 +184,12 @@ export default class Client extends SmppSession {
 		});
 	}
 
+	// TODO: Move this to smppSession and call postProcessors
+	eventAnyPdu(session: any, pdu: any): Promise<any> {
+		this.eventEmitter.emit(this.EVENT.ANY_PDU, pdu);
+		return Promise.resolve();
+	}
+
 	private connectSession(): Promise<void> {
 		return new Promise<void>((resolve, reject) => {
 			this.validateFields(reject);
@@ -277,9 +287,4 @@ export default class Client extends SmppSession {
 			reject(errorMessage);
 		}
 	}
-
-	eventAnyPdu(session: any, pdu: any): Promise<any> {
-		this.eventEmitter.emit(this.EVENT.ANY_PDU, pdu);
-		return Promise.resolve();
-	}
 }
\ No newline at end of file
diff --git a/src/PDUProcessor/ProcessorManager.ts b/src/PDUProcessor/ProcessorManager.ts
index 34b92d7..a3e8d19 100644
--- a/src/PDUProcessor/ProcessorManager.ts
+++ b/src/PDUProcessor/ProcessorManager.ts
@@ -87,4 +87,12 @@ export default class ProcessorManager {
 	static getProcessorsForType(type: string): PduProcessor[] {
 		return this.processors.filter((processor: PduProcessor) => processor.sessionType === type);
 	}
+
+	static getPreprocessorsForType(type: string): PduProcessor[] {
+		return this.preprocessors.filter((processor: PduProcessor) => processor.sessionType === type);
+	}
+
+	static getPostprocessorsForType(type: string): PduProcessor[] {
+		return this.postprocessors.filter((processor: PduProcessor) => processor.sessionType === type);
+	}
 }
\ No newline at end of file
diff --git a/src/SmppSession.ts b/src/SmppSession.ts
index d389a88..5a757bb 100644
--- a/src/SmppSession.ts
+++ b/src/SmppSession.ts
@@ -177,14 +177,6 @@ export default abstract class SmppSession {
 	detachPostprocessor(processor: PduProcessor): void {
 		this.detachProcessor(processor, this.processors.Postprocessor);
 	}
-
-	serializePduProcessors(): object {
-		let processors: PduProcessor[] = this.processors.Preprocessor.concat(this.processors.Postprocessor);
-		return processors.map((processor: PduProcessor) => {
-			return processor.serialize();
-		});
-	}
-
 	abstract eventAnyPdu(session: any, pdu: any): Promise<any>;
 
 	private detachProcessor(processor: PduProcessor, array: PduProcessor[]): void {