The ornamental design for a connectionsocket, substantially as shown and described.
FIG. 1 is a left side perspective view of a connection socket, showing our new design.
FIG. 2 is a right side perspective view thereof.
FIG. 3 is a front perspective view thereof.
FIG. 4 is a rear perspective view thereof.
FIG. 5 is a top perspective view thereof; and,
FIG. 6 is a bottom perspective view thereof.
Shading lines shown in the drawings are intended to represent the approximate three-dimensional contour of the design, and are not intended to indicate surface decoration.
The broken line shown in the figure drawings is included for the purpose of illustrating environment and forms no part of the claimed design.