update socket.c for listen socket

GuoWenxue

2022-04-22 0fd2ff9f9aca1f30d6b4620f90802223cc221fe0

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INST_PATH=/usr/bin
 
BIN_FILES=comport
 
all: clean 
    gcc *.c -o ${BIN_FILES}
 
 
clean: 
    rm -f ${BIN_FILES}
 
install: 
    @cp ${BIN_FILES} ${INST_PATH}