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esutton/get-ntrip-source-table.py

Created December 7, 2022 16:28
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  1. esutton created this gist Dec 7, 2022.
    113 changes: 113 additions & 0 deletions get-ntrip-source-table.py
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    #!/usr/bin/env python

    #******************************
    # get-ntrip-source-table.py
    #
    # Get a NTRP server's SOURCETABLE mount points
    #
    # Verify host and port using wget or curl
    # `
    # curl --http0.9 rtgpsout.unavco.org:2101
    # curl --http0.9 ok.smartnetna.com:10000
    #
    # wget ok.smartnetna.com:10000
    # cat index.html
    #
    # wget -q -S -O - ok.smartnetna.com:10000
    # SOURCETABLE 200 OK
    # Server: GNSS Spider 7.8.0.9445/1.0
    # Date: Mon, 05 Dec 2022 17:03:50 GMT
    # Content-Type: text/plain
    # Content-Length: 1109
    #
    # STR;RTCM3_IMAX;RTCM3_IMAX;RTCM 3;;2;GPS+GLO;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # STR;RTCM3_ViRS;RTCM3_ViRS;RTCM 3;;2;GPS+GLO;SmartNet North America;;41.26;-96.14;1;1;Leica GNSS Spider;none;B;Y;9600;
    # STR;RTCM3_MAX;RTCM3_MAX;RTCM 3;;2;GPS+GLO;SmartNet North America;;41.26;-96.14;1;1;Leica GNSS Spider;none;B;Y;9600;
    # STR;RTCM2_DGPS_IMAX;RTCM2_DGPS_IMAX;RTCM 2;;2;GPS;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # STR;MSM_VIRS;MSM_VIRS;RTCM 3;;2;GPS+GLO+GAL+BDS;SmartNet North America;;41.26;-96.14;1;1;Leica GNSS Spider;none;B;Y;9600;
    # STR;MSM_IMAX;MSM_IMAX;RTCM 3;;2;GPS+GLO+GAL+BDS;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # STR;RTCM3_NEAR;RTCM3_NEAR;RTCM 3;;2;GPS+GLO;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # STR;RTCM2_DGPS_NEAR;RTCM2_DGPS_NEAR;RTCM 2;;2;GPS;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # STR;MSM_NEAR;MSM_NEAR;RTCM 3;;2;GPS+GLO+GAL+BDS;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # `
    #
    #################################
    # Get SOURCETABLE from an NTRIP server to discover mount points.
    #
    # Example:
    #
    # GET / HTTP/1.0
    # Host: ok.smartnetna.com:10000
    # User-Agent: MyAppName
    # Accept: */*
    #
    #
    # SOURCETABLE 200 OK
    # Server: GNSS Spider 7.2.1.7804/1.0
    # Date: Wed, 05 Dec 2018 20:55:04 GMT Standard Time
    # Content-Type: text/plain
    # Content-Length: 1101
    #
    # STR;RTCM3_IMAX;RTCM3_IMAX;RTCM 3;;2;GPS & GLO;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # STR;RTCM3_ViRS;RTCM3_ViRS;RTCM 3;;2;GPS & GLO;SmartNet North America;;41.26;-96.14;1;1;Leica GNSS Spider;none;B;Y;9600;
    # STR;RTCM3_NEAR;RTCM3_NEAR;RTCM 3;;2;GPS & GLO;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # STR;RTCM3_MAX;RTCM3_MAX;RTCM 3;;2;GPS & GLO;SmartNet North America;;41.26;-96.14;1;1;Leica GNSS Spider;none;B;Y;9600;
    # STR;RTCM2_DGPS_IMAX;RTCM2_DGPS_IMAX;RTCM 2;;2;GPS;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # STR;RTCM2_DGPS_NEAR;RTCM2_DGPS_NEAR;RTCM 2;;2;GPS;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # STR;MSM_NEAR;MSM_NEAR;RTCM 3;;2;GPS+GLO+GAL+BDS;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # STR;MSM_VIRS;MSM_VIRS;RTCM 3;;2;GPS+GLO+GAL+BDS;SmartNet North America;;41.26;-96.14;1;1;Leica GNSS Spider;none;B;Y;9600;
    # STR;MSM_IMAX;MSM_IMAX;RTCM 3;;2;GPS+GLO+GAL+BDS;SmartNet North America;;41.26;-96.14;1;0;Leica GNSS Spider;none;B;Y;9600;
    # ENDSOURCETABLE
    #################################
    import socket

    UserAgent = 'MyAppName'

    # ok.smartnetna.com is commercial
    # https://www.smartnetna.com/
    Server = 'ok.smartnetna.com'
    Port = 10000
    Station = 'RTCM3_NEAR'

    # rtgpsout.unavco.org is free but requires registration to us
    # SOURCETABLE returns hundreds of NTRIP mount points
    # http://www.unavco.org/instrumentation/networks/status/all/realtime
    # Server = 'rtgpsout.unavco.org'
    # Port = 2101
    # Station = 'WMOK_RTCM3'


    client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    server_address = (Server, Port)
    client_socket.connect(server_address)

    request_header = ('GET / HTTP/1.0\r\n' +
    'Host: %s:%s\r\n' +
    'User-Agent: %s\r\n' +
    'Accept: */*\r\n' +
    '\r\n') % (Server, Port, UserAgent)

    print("**********************")
    print("* request_header *")
    print("**********************")
    print(request_header)

    request_header = bytes(request_header, encoding='utf-8')
    client_socket.send(request_header)

    # A large SOURCETABLE will arrive in multiple packets
    response = b''
    while True:
    recv = client_socket.recv(1024)
    if not recv:
    break
    response += recv

    print("**********************")
    print("* response *")
    print("**********************")

    # response contains a bunch of '\r\n' terminated lines
    response = str(response, 'UTF-8')
    print (response)
    client_socket.close()