Abstract: A portable electronic device may include a housing having a wall defining an opening in the housing and at least a portion of four side surfaces of the portable electronic device. The portable electronic device may further include a display at least partially within the housing, a front cover positioned in the opening in the housing and over the display, the front cover defining a front surface, a peripheral side surface extending from the front surface and at least partially surrounded by the wall of the housing, and a notch that, together with a portion of the wall of the housing, defines an acoustic port of the portable electronic device. The electronic device may further include an acoustic port cover positioned at least partially in the acoustic port and a speaker at least partially within the housing and configured to direct sound through the acoustic port cover.

Abstract: A messaging system enables client applications to send and receive messages. The messaging system includes independent component programs performing different functions of the messaging system, such as connection managers that maintain network connections with the client applications, a message router that sends received messages to recipient applications through network connections, and a dispatcher that authenticates other component programs. A messaging server may authenticate client applications using certificate-based authentication (e.g., private and public keys), authentication transfer from another trusted messaging server, or other methods (e.g., user name and password). To authenticate a component program, the dispatcher compares instantiation information (e.g., user identity, process identifier, creation time) of the component program provided by the operating system with instantiation information saved in a shared memory at the time of the component program's instantiation.

Abstract: A messaging system enables client applications to send and receive messages. The messaging system includes independent component programs performing different functions of the messaging system. The component programs include persistent connection managers that maintain connections with the client applications, a dispatcher that establishes connections, and a message router that sends received messages to recipient applications through corresponding connections. The connection managers share a state memory containing a received message and a completion state associated with the received message. The messaging system retains the message until the completion state fulfills a completion condition. The messaging systems supports live deployment of updates the message router and dispatcher because the state of the messaging system is stored independently from memory allocated to these component programs, so they may be restarted without loss of messages, connections or other state information.

Abstract: A messaging system enables client applications to send and receive messages. The messaging system includes independent component programs performing different functions of the messaging system, such as connection managers that maintain network connections with the client applications, a message router that sends received messages to recipient applications through network connections, and a dispatcher that authenticates other component programs. A messaging server may authenticate client applications using certificate-based authentication (e.g., private and public keys), authentication transfer from another trusted messaging server, or other methods (e.g., user name and password). To authenticate a component program, the dispatcher compares instantiation information (e.g., user identity, process identifier, creation time) of the component program provided by the operating system with instantiation information saved in a shared memory at the time of the component program's instantiation.

Abstract: A messaging system enables client applications to send and receive messages. The messaging system includes independent component programs performing different functions of the messaging system, such as connection managers that maintain network connections with the client applications, a message router that sends received messages to recipient applications through network connections, and a dispatcher that authenticates other component programs. A messaging server may authenticate client applications using certificate-based authentication (e.g., private and public keys), authentication transfer from another trusted messaging server, or other methods (e.g., user name and password). To authenticate a component program, the dispatcher compares instantiation information (e.g., user identity, process identifier, creation time) of the component program provided by the operating system with instantiation information saved in a shared memory at the time of the component program's instantiation.

Abstract: A messaging system enables client applications to send and receive messages. The messaging system includes independent component programs performing different functions of the messaging system. The component programs include persistent connection managers that maintain connections with the client applications, a dispatcher that establishes connections, and a message router that sends received messages to recipient applications through corresponding connections. The connection managers share a state memory containing a received message and a completion state associated with the received message. The messaging system retains the message until the completion state fulfills a completion condition. The messaging systems supports live deployment of updates the message router and dispatcher because the state of the messaging system is stored independently from memory allocated to these component programs, so they may be restarted without loss of messages, connections or other state information.

Abstract: A messaging system enables client applications to send and receive messages. The messaging system includes independent component programs performing different functions of the messaging system, such as connection managers that maintain network connections with the client applications, a message router that sends received messages to recipient applications through network connections, and a dispatcher that authenticates other component programs. A messaging server may authenticate client applications using certificate-based authentication (e.g., private and public keys), authentication transfer from another trusted messaging server, or other methods (e.g., user name and password). To authenticate a component program, the dispatcher compares instantiation information (e.g., user identity, process identifier, creation time) of the component program provided by the operating system with instantiation information saved in a shared memory at the time of the component program's instantiation.

Abstract: A messaging system enables client applications to send and receive messages. The messaging system includes independent component programs performing different functions of the messaging system, such as connection managers that maintain network connections with the client applications, a message router that sends received messages to recipient applications through network connections, and a dispatcher that authenticates other component programs. A messaging server may authenticate client applications using certificate-based authentication (e.g., private and public keys), authentication transfer from another trusted messaging server, or other methods (e.g., user name and password). To authenticate a component program, the dispatcher compares instantiation information (e.g., user identity, process identifier, creation time) of the component program provided by the operating system with instantiation information saved in a shared memory at the time of the component program's instantiation.

Abstract: A messaging system enables client applications to send and receive messages. The messaging system includes independent component programs performing different functions of the messaging system. The component programs include persistent connection managers that maintain connections with the client applications, a dispatcher that establishes connections, and a message router that sends received messages to recipient applications through corresponding connections. The connection managers share a state memory containing a received message and a completion state associated with the received message. The messaging system retains the message until the completion state fulfills a completion condition. The messaging systems supports live deployment of updates the message router and dispatcher because the state of the messaging system is stored independently from memory allocated to these component programs, so they may be restarted without loss of messages, connections or other state information.

Abstract: A messaging system enables client applications to send and receive messages. The messaging system includes independent component programs performing different functions of the messaging system. The component programs include persistent connection managers that maintain connections with the client applications, a dispatcher that establishes connections, and a message router that sends received messages to recipient applications through corresponding connections. The connection managers share a state memory containing a received message and a completion state associated with the received message. The messaging system retains the message until the completion state fulfills a completion condition. The messaging systems supports live deployment of updates the message router and dispatcher because the state of the messaging system is stored independently from memory allocated to these component programs, so they may be restarted without loss of messages, connections or other state information.

Abstract: A messaging system enables client applications to send and receive messages. The messaging system includes independent component programs performing different functions of the messaging system, such as connection managers that maintain network connections with the client applications, a message router that sends received messages to recipient applications through network connections, and a dispatcher that authenticates other component programs. A messaging server may authenticate client applications using certificate-based authentication (e.g., private and public keys), authentication transfer from another trusted messaging server, or other methods (e.g., user name and password). To authenticate a component program, the dispatcher compares instantiation information (e.g., user identity, process identifier, creation time) of the component program provided by the operating system with instantiation information saved in a shared memory at the time of the component program's instantiation.