docs: update links and redirects

doc/faq.rst

@@ -55,7 +55,7 @@ references, can be found in the comments at the beginning of the triangle.c
 source file.  Another listing of these references, with PostScript copies
 of some of the papers, is available from the Web page
 
-http://www.cs.cmu.edu/~quake/triangle.research.html
+https://www.cs.cmu.edu/~quake/triangle.research.html
 
 These programs may be freely redistributed under the condition that the
 copyright notices (including the copy of this notice in the code comments
@@ -90,5 +90,6 @@ fee. Please send corresponding requests to:
 [email protected]. Please do not forget to include some
 description of your company and the realm of its activities.
 
-For details, see the `TetGen web page <http://tetgen.org>`_
+For details, see the
+`TetGen web page <https://wias-berlin.de/software/tetgen/FAQ-license.jsp>`__
 

doc/index.rst

@@ -20,14 +20,14 @@ also have many other applications ranging from computer graphics to robotics.
 In order to generate these 2D and 3D meshes, MeshPy provides Python interfaces
 to a few well-regarded mesh generators:
 
-* `Triangle <http://www.cs.cmu.edu/~quake/triangle.html>`__ by J. Shewchuk.
-* `TetGen <http://tetgen.berlios.de/>`__ by Hang Si.
+* `Triangle <https://www.cs.cmu.edu/~quake/triangle.html>`__ by J. Shewchuk.
+* `TetGen <https://wias-berlin.de/software/tetgen>`__ by Hang Si.
 
 Triangle and TetGen are included in the package in slightly modified versions.
 An interface for `Gmsh <https://gmsh.info/>`__ was also part of MeshPy, but is
 now its own package `gmsh_interop <https://github.com/inducer/gmsh_interop>`__.
 
-MeshPy has its own `web page <http://mathema.tician.de/software/meshpy>`_,
+MeshPy has its own `web page <https://mathema.tician.de/software/meshpy>`_,
 where you can find updated software, news, a forum, and documentation.
 
 Show me! I need examples!
@@ -63,7 +63,7 @@ As a result of this, you will get::
     ...
 
 and a file :file:`test.vtk` that you can view with
-`Paraview <http://paraview.org>`__ or
+`Paraview <https://www.paraview.org>`__ or
 `Visit <https://visit-dav.github.io/visit-website/>`__.
 
 Indices and tables

doc/installation.rst

@@ -7,18 +7,18 @@ This tutorial will walk you through the process of building MeshPy. To follow,
 you really only need three basic things:
 
 * A UNIX-like machine with web access.
-* A working `Python <http://www.python.org>`__ installation.
-* A recent C++ compiler. We use `pybind11 <https://pybind11.readthedocs.io>`__
+* A working `Python <https://www.python.org>`__ installation.
+* A recent C++ compiler. We use `pybind11 <https://pybind11.readthedocs.io/en/stable>`__
   to create the wrappers, so see their documentation for minimal required versions
   if in doubt.
-* `meson-python <https://meson-python.readthedocs.io>`__ and
+* `meson-python <https://meson-python.readthedocs.io/en/latest/>`__ and
   `ninja <https://ninja-build.org/>`__, which are used to build the wrapper.
   See the `[buildsystem]` section in `pyproject.toml` for an up to date list.
 
 Step 1: Download and unpack MeshPy
------------------------------------
+----------------------------------
 
-`Download MeshPy <http://pypi.org/project/MeshPy>`_ and unpack it::
+`Download MeshPy <https://pypi.org/project/MeshPy>`_ and unpack it::
 
     $ tar xfz MeshPy-VERSION.tar.gz
 
@@ -29,8 +29,8 @@ If you're downloading from ``git`` instead::
 Step 2: Build MeshPy
 --------------------
 
-MeshPy uses `meson-python <https://meson-python.readthedocs.io>`__ as its build
-system. For additional compilation options (e.g. compiling in debug mode),
+MeshPy uses `meson-python <https://meson-python.readthedocs.io/en/latest>`__ as
+its build system. For additional compilation options (e.g. compiling in debug mode),
 see their official documentation.
 
 First, just type::